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1 词典释义:
once
时间: 2024-04-19 19:42:48
TEM4CET4
英 [wʌns]

adv.一次;一回;以前;曾经;一度;(用于条件从句)一旦,真的;成一倍地;

conj.一旦…(就…);一…(就…)

双语例句
  • I met Miquela once, briefly.

    我见过蜜凯拉一次,时间很短。

    《柯林斯英汉双解大词典》
  • We'll only do it once— if at all.

    我们就是干也只会干一次。

    《牛津词典》
  • The water is fine once you're in!

    你一旦下了水,就会觉得水里挺舒适。

    《牛津词典》
  • For once, Dad is not complaining.

    就这一次,爸爸没有抱怨。

    《柯林斯英汉双解大词典》
  • Just for once he arrived on time.

    只有这一次他按时到了。

    《牛津词典》
  • I've only been there once.

    我只去过那里一次。

    《牛津词典》
  • She once ruled over a vast empire.

    她曾统治过一个幅员辽阔的帝国。

    《牛津词典》
  • I once went out with a French man.

    我曾与一个法国人恋爱过。

    《柯林斯英汉双解大词典》
  • He once lived in Zambia.

    他曾在赞比亚生活过。

    《牛津词典》
  • He only did it the once.

    这种事儿他仅仅干过一次。

    《牛津词典》
  • I once met your mother.

    我曾经见过你母亲。

    《牛津词典》
  • It's easy, once you've got the knack.

    你一旦掌握这个技能就容易了。

    《牛津词典》
  • Once destroyed, brain cells do not regenerate.

    脑细胞一旦遭到破坏,就不能再生。

    《牛津词典》
  • He cleans his car once a week.

    他每周洗一次汽车。

    《牛津词典》
  • I hit him once more for luck.

    我无故又打了他一下。

    《牛津词典》
  • Everyone began talking at once.

    大家同时开始讲话。

    《牛津词典》
  • He never once offered to help.

    他从没有主动提出过帮忙。

    《牛津词典》
  • Once again the train was late.

    火车又一次晚点了。

    《牛津词典》
  • Let me hear it just once more.

    让我再听一遍。

    《牛津词典》
  • I can't do two things at once.

    我不能同时做两件事。

    《牛津词典》
  • Her parents once ran a shop.

    她父母从前开过一家商店。

    《柯林斯英汉双解大词典》
  • An old oak tree once stood here.

    以前这儿长着一棵老橡树。

    《牛津词典》
  • The place at once enraptured me.

    这个地方立刻把我迷住了。

    《柯林斯英汉双解大词典》
  • The lion roared once and sprang.

    狮子吼了一声,跳了起来。

    《柯林斯英汉双解大词典》
  • If necessary I can come at once.

    如果有必要,我可以马上来。

    《牛津词典》
  • All at once she lost her temper.

    她突然大发脾气。

    《牛津词典》
  • 'Come here at once!' she ordered.

    “马上过来!”她命令道。

    《牛津词典》
  • The lion roared once, and sprang.

    狮子吼了一声,跳了起来。

    《柯林斯英汉双解大词典》
  • I can't be in two places at once.

    我不能同时身处两地。

    《牛津词典》
近义词
adv. 一次;曾经
n. 一次,一回
考纲分布

6年出现 457

重要程度
  • 85%

    adv 曾经

  • 11%

    n 一次; 一倍

  • 2%

    adv (at once)立刻; 马上

  • 2%

    conj 一旦

  • 0%

    adv (once upon a time)从前

考纲释义
  • adv. 曾经

    真题例句:

    • While eating and drinking, we talked about the beautiful forest we once had.

      边吃边喝的过程中,我们聊起了曾经拥有的美丽森林。

      [2020年 陕西省卷 完型填空]
    • There was once a farmer.

      从前有一个农民。

      [2020年 锦州市卷 阅读理解]
    • I was once asked about my Chinese dream.

      我曾经被问到我的中国梦。

      [2018年 兰州市卷 词汇运用]
  • n. 一次; 一倍

    英文释义:

    one single time

    真题例句:

    • Every once in a while, floodwaters rise higher than a house, ruining (泡坏) many things in the house.

      每隔一段时间,洪水就会涨得比房子还高,把房子里的很多东西都泡坏了。

      [2020年 陕西省卷 阅读理解]
    • Two  years later, the small restaurant had once again become a big food company, thanks to the businessman's words.

      两年后,这家小饭馆,在商人的口中,再次成为了一家大食品公司。

      [2019年 呼和浩特市卷 单项选择]
    • Try to drink some water at least once every hour.

      尝试至少每小时喝一次水。

      [2019年 贵阳市卷 阅读理解]
  • adv. (at once)立刻; 马上

    真题例句:

    • Why not clean up your room at once?

      为什么不立即打扫房间?

      [2020年 重庆市B卷 单项选择]
    • Be ready to act at once.

      准备好立即行动。

      [2019年 山西省卷 阅读技能]
    • You'd better go to see a doctor at once.

      你最好马上去看医生。

      [2018年 重庆市卷 阅读理解]
  • conj. 一旦

    英文释义:

    as soon as

    真题例句:

    • Once a dish comes, instead of lifting our chopsticks, we take out our mobiles and click.

      一旦一道菜来了,我们不是拿起筷子,而是拿出手机点击。

      [2018年 衡阳市卷 阅读理解]
    • Once dishes come, we take out our mobile phones and take photos instead of lifting our chopsticks.

      一旦菜来了,我们就拿出手机拍照,而不是拿起筷子。

      [2018年 齐齐哈尔市卷 阅读理解]
    • Once you are in another country

      一旦你在另一个国家

      [2018年 齐齐哈尔市卷 阅读理解]
  • adv. (once upon a time)从前

    真题例句:

    • Once upon a time, there was a hippo living in a river next to a big tree.

      从前,有一只河马住在一棵大树旁边的河里。

      [2021年 牡丹江市卷 归纳总结]
    • Once upon a time, there was a( tree which wanted to become a treasure box.

      从前,有一棵(树)想变成一个宝箱。

      [2018年 衡阳市卷 阅读理解]
必考短语
用法讲解
  • once,as soon as两者均为从属连词,引导时间状语从句,都表示主句的动作紧跟在从句的动作之后发生。once除表时间外,还表示条件,一般译作“一旦...就...”。as soon as强调的只是时间,译作“刚...就...”或“一...就...”。

考纲分布

12年出现 49

重要程度
  • 80%

    conj 一旦; 一…就

  • 12%

    adv 曾经; 一度

  • 8%

    adv 一次; 仅一次

考纲释义
  • conj. 一旦; 一…就

    真题例句:

    • Some of your interests may not appear to be connected but, once you explore their depths, you discover that they are.

      你的一些兴趣可能看起来并不相关,但一旦你深入探索,你会发现它们是相关的。

      [2021年 天津卷 阅读理解]
    • Once the drink is gone, the straw will take centuries to disappear.

      饮料一喝完,吸管却需要几个世纪才能消失。

      [2021年 全国乙卷 阅读理解]
    • But once having met and liked them, we think how terrible it would have been, had we missed the chance.

      但一旦我们认识了他们并喜欢上了他们,我们就会想,如果我们错过了这个机会,那将是多么可怕的事情。

      [2020年 天津卷 阅读理解]
  • adv. 曾经; 一度

    真题例句:

    • Most page turners are piano students, although Ms Raspopova has once asked her husband to help her out on stage.

      尽管拉斯波波娃也曾请自己的丈夫到舞台上帮忙翻乐谱,但多数翻谱员是钢琴初学者。

      [2021年 新高考Ⅰ卷 阅读理解]
    • We provide full furnishings, like donated kitchen equipment and furniture items, for the new homes of people who were once homeless.

      我们为曾经无家可归的人们的新家提供全套家具,如捐赠的厨房设备和家具。

      [2021年 天津卷 阅读理解]
    • That is only evidence that traditions once existed.

      这是传统曾经存在的唯一证据。

      [2018年 全国卷3 阅读理解]
  • adv. 一次; 仅一次

    真题例句:

    • Today, they are once again a familiar sight, playing roles that are often just as important for the community as their original purpose.

      今天,他们再一次成为人们熟悉的景象,扮演着与他们最初的目的一样重要的角色。

      [2020年 江苏卷 阅读理解]
    • I started reading books on my own before age 5 and my mother took me to the public library once a week.

      我在5岁前开始自己看书,我妈妈每周带我去一次公共图书馆。

      [2020年 浙江卷 任务型阅读]
    • As you may know already, it's a required meeting once a week.

      你可能已经知道了,这是每周一次的必修课。

      [2017年 全国卷3 听力]
必考短语
真题例句
  • An avalanche once closed the path, killing 63 people.

    2018年高考英语全国卷3 阅读理解 阅读B 原文
  • As I watch her chase after a squirrel, throwing her whole being into the here-and-now of an exercise that has never once ended in victory.

    2015年高考英语浙江卷 阅读理解 阅读D 原文
  • As Tolstoy once said, \one can live magnificently in this world if one knows how to work and how to love, to work for the person one loves and to love one's work.\

    2016年高考英语天津卷 阅读理解 阅读C 原文
  • As you may know already, it's a required meeting once a week.

    2017年高考英语全国卷2 听力 原文
  • At that moment, I remembered that my father once said, \ the classroom is a place for learning and that include leaning from textbooks, and mistake as well.\

    2018年高考英语全国卷3 语法填空 原文
  • Athens was not in the farthest background of his mind, but once man has a great and good idea, it is never completely lost.

    2015年高考英语江苏卷 阅读理解 阅读D 原文
  • But once I started, I simply couldn't put it down.

    2014年高考英语全国卷1 听力 原文
  • Gray wolves once were seen here and there in the Yellowstone area and much of the continental united states, but they were gradually displaced by human development.

    2017年高考英语全国卷3 阅读理解 阅读C 原文
  • Guests staying at plaza hotel will be given meal tickets worth $36 once they have produced 10 watt hours of electricity.

    2016年高考英语浙江卷(10月) 阅读理解 阅读B 原文
  • He hurried home, never once looking back to see if he was being followed.

    2017年高考英语江苏卷 单项填空 原文
  • He was just saying: \I'm king of this forest, and here is your reminder! \ Once his message was delivered, he allowed me to stay and watch.

    2018年高考英语全国卷3 语法填空 原文
  • Holker once again opens is gardens in aid of the disadvantaged.

    2018年高考英语全国卷3 阅读理解 阅读A 原文
  • However, once I worked with statewide and local government, I realized that a better fit for me would be public policy, and now I am in the process of changing my area.

    2016年高考英语浙江卷(6月) 阅读理解 七选五 原文
  • I became out of breath and the once injured ankle hurt badly.

    2018年高考英语北京卷 阅读理解 阅读A 原文
  • I believe you will have a wonderful time here once you get to know everyone else.

    2015年高考英语陕西卷 单项填空 原文
  • I come here once a week, mostly Friday or Saturday.

    2015年高考英语湖南卷 听力 原文
  • I once wrote a paper on the influence of fairy tales on Roald Dahl's writing and it gave me a new appreciation for his strange and delightful words.

    2019年高考英语全国卷2 阅读理解 阅读A 原文
  • I saw a dark future for my once sweet daughter.

    2015年高考英语重庆卷 完形填空 A 原文
  • I still remember visiting a friend who'd lived here for five years and I was shocked when I learnt she hadn't cooked once in all that time.

    2018年高考英语浙江卷 语法填空 原文
  • If you have any doubts about your health, you'd better consult your doctor at once.

    2015年高考英语天津卷 单项填空 原文
  • In a fire drill, the students should shut the door and leave at once.

    2018年高考英语天津卷 阅读理解 阅读A 题设
  • It cannot be discovered once for all.

    2015年高考英语江苏卷 阅读理解 阅读D 原文
  • It was carried out once a year.

    2015年高考英语湖南卷 阅读理解 阅读C 选项
  • It was once common to regard Britain as a society with class distinction.

    2015年高考英语广东卷 阅读理解 阅读D 原文
  • Lorry Chang goes to the Snoopy Café about once a week.

    2015年高考英语上海卷 听力 原文
  • Many westerners who/that come to China cook much less than in their own countries once they realize how cheap it can be to eat out.

    2018年高考英语浙江卷 语法填空 原文
  • Measles, which once killed 450 children each year and disabled even more, was nearly wiped out in the united states 14 years ago by the universal use of the MMR vaccine.

    2017年高考英语北京卷 阅读理解 阅读C 原文
  • Miss Longfield added: \Then there is this push to connect—if you go offline, will you miss something, will you miss out, will you show that you don't care about those people you are following, all of those come together in a huge way at once.\

    2018年高考英语江苏卷 阅读理解 阅读D 原文
  • My dad never once said, \if you want to catch a fish you need to think like a fisherman.\

    2015年高考英语广东卷 阅读理解 阅读B 原文
  • Nasa is worried about two things: recovery time once astronauts return home, and, more importantly, how to maintain strength and fitness for the two and a half years or more that it would take to make a round-trip to mars.

    2015年高考英语湖北卷 阅读理解 阅读D 原文
  • News of the first kind pays its rewards at once.

    2015年高考英语江苏卷 任务型阅读 原文
  • No matter how attractive they look in the store, once I get them home they're unfailingly dry, hard, and tasteless.

    2015年高考英语全国卷1 阅读理解 阅读B 原文
  • Normally at least once a week, but she's now a volunteer teacher at a mountain village in Africa.

    2017年高考英语浙江卷(11月) 听力 原文
  • Once called the garden of Amsterdam, it still attracts travelers to come over to cycle and walk through the surrounding forests.

    2015年高考英语湖北卷 阅读理解 阅读C 原文
  • Once fire and emergency people arrive, Larry and the other man backed off and let them go to work.

    2016年高考英语全国卷1 完形填空 原文
  • Once I had a boy who worked experimentally with tinkertoys in his free time.

    2016年高考英语全国卷2 阅读理解 阅读B 原文
  • Once lighthouses had telephones, keepers would call each other to warn that the inspector was approaching.

    2015年高考英语湖南卷 阅读理解 阅读C 原文
  • Once that happened, I just kept pushing my studying further and further back in my day.

    2018年高考英语浙江卷 完形填空 原文
  • Once the damage is done, it will take many years for the farmland to recover.

    2015年高考英语北京卷 单项填空 原文
  • Once they arrive, the tables are turned.

    2017年高考英语全国卷2 阅读理解 阅读D 原文
  • Once we have a common interest, a friendship can begin.

    2015年高考英语安徽卷 任务型读写 原文
  • Once when I was facing a decision that involved high risk, I went to a friend.

    2015年高考英语天津卷 阅读理解 阅读D 原文
  • Once when she was facing away, I reached out and carefully scratched her back with my finger, she didn't move.

    2015年高考英语四川卷 完形填空 原文
  • Once you have reached a thousand dollars, you'll find you probably have the motivation to continue to save even more.

    2016年高考英语上海卷 听力 原文
  • Once, a passenger next to me talked out loud on his mobile phone.

    2015年高考英语重庆卷 阅读理解 阅读C 原文
  • Once, after a trip to Hollywood, I returned to Australia so depressed and spent months in my bedroom painting, listening to Eckhart Tolle's music and trying to find myself again.

    2017年高考英语天津卷 阅读表达 原文
  • Once, while working overnight at a store, he let a homeless man sleep in his truck.

    2017年高考英语全国卷2 完形填空 原文
  • Our generation once joined hands and stood firm at times of national emergency.

    2016年高考英语北京卷 阅读理解 阅读D 原文
  • Passenger pigeons once flew over much of the united states in unbelievable numbers.

    2014年高考英语全国卷1 阅读理解 阅读B 原文
  • Prevention is key, scientists says because once ecosystems pass their tipping point, it is remarkably difficult for them to return.

    2019年高考英语天津卷 阅读理解 阅读C 原文
  • Once I look up something on the Internet, I don't need to keep all the details for future use—I know where to find that information again and can quickly and easily do so.

    2016年高考英语江苏卷 阅读理解 阅读D 原文
  • The obvious one is money: eating out once or twice a week may be affordable but doing this most days adds up.

    2018年高考英语浙江卷 语法填空 原文
  • The story once again tells us that one good turn deserves another.

    2018年高考英语北京卷 完形填空 原文
  • Their wings can bridge the gap between lines, resulting in electrocution if they touch two lines at once.

    2016年高考英语北京卷 阅读理解 阅读C 原文
  • These results, once again, lead to concrete advice: \once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity.

    2015年高考英语江苏卷 阅读理解 阅读C 原文
  • TV Ears is so comfortable that Jack forgets he has them on ! he can once again hear and understand the dialogue.

    2015年高考英语北京卷 阅读理解 阅读B 原文
  • We do give you on the job training, once every month during normal hours.

    2016年高考英语北京卷 听力 原文
  • When I was 17, I read a magazine article about a museum called the mcnay, once the home of a watercolorist named marian mcnay.

    2018年高考英语天津卷 阅读理解 阅读B 原文
  • With 500 years of history, Hampton Court was once the home of four kings and one queen.

    2015年高考英语全国卷2 阅读理解 阅读D 原文
  • Yet, now that I'm growing and the world I once knew as being so simple is becoming more complex, I find myself needing a way to escape.

    2019年高考英语天津卷 阅读理解 阅读B 原文
考纲分布

12年出现 69

重要程度
  • 70%

    conj 一旦; 一...就

  • 14%

    adv 以前; 曾经

  • 12%

    n 一次; 一回

  • 3%

    idm (at once)立即

  • 1%

    idm (at once)同时

考纲释义
  • conj. 一旦; 一...就

    英文释义:

    as soon as

    真题例句:

    • Once you get beyond the initial learning curve, knitting and crocheting can lower heart rate and blood pressure.

      一旦你超越了最初的学习曲线,编织和钩织可以降低心率和血压。

      [2017年 CET4 阅读理解B]
    • Once we're on the path of growth, we can continually move through the seasons of transformation and renewal.

      一旦我们走上了成长的道路,我们就可以不断地经历转变和更新的季节。

      [2017年 CET4 阅读理解B]
    • What people were like when they came in had greater consequence than what happened once they were there.

      人们进来的时候是什么样子,要比他们到了那里之后所发生的事情有更大的影响。

      [2016年 CET4 阅读理解A]
  • adv. 以前; 曾经

    真题例句:

    • It is not as healthy as once thought.

      它并不像人们曾经认为的那样有益健康。

      [2020年 CET4 听力]
    • Once upon a time, they weren't even boxes.

      曾几何时,它们甚至不是盒子。

      [2020年 CET4 阅读理解B]
    • He once served in a fire department.

      他曾在消防部门服役。

      [2018年 CET4 听力]
  • n. 一次; 一回

    英文释义:

    one single time

    真题例句:

    • Nearly two-thirds of us grab fast food once a week, and we get almost 25% of our daily calories from snacks.

      我们中近三分之二的人每周吃一次快餐,我们每天几乎25%的热量来自零食。

      [2020年 CET4 阅读理解B]
    • Once again, it seems we have a lot to learn from dogs.

      再次,看来我们有很多东西要向狗学习。

      [2019年 CET4 听力]
    • \For once, we are the ones who are blocking the traffic, \ he says delightedly.

      “这一次,我们是堵塞交通的人,”他高兴地说。

      [2018年 CET4 阅读理解B]
  • idm. (at once)立即

    英文释义:

    immediately

    真题例句:

    • It informed the local police at once.

      它立即通知了当地警方。

      [2021年 CET4 听力]
    • She called the police at once.

      她立刻报了警。

      [2016年 CET4 听力]
    • Trigger its built-in alarm system at once.

      立即触发其内置报警系统。

      [2016年 CET4 阅读理解A]
  • idm. (at once)同时

    英文释义:

    at the same time

    真题例句:

    • The brain can process just so much at once.

      大脑可以一次处理这么多东西。

      [2017年 CET4 阅读理解B]
必考短语
用法讲解
  • once,as soon as两者均为从属连词,引导时间状语从句,都表示主句的动作紧跟在从句的动作之后发生。once除表时间外,还表示条件,一般译作“一旦...就...”。as soon as强调的只是时间,译作“刚...就...”或“一...就...”。

真题例句
  • Where are you in the cycle of renewal: Are you actively preserving the present, or selectively forgetting the past, or boldly creating the future? What advice would Leah give you to move you ahead on your journey? Once we're on the path of growth, we can continually move through the seasons of transformation and renewal.

    出自-2017年6月阅读原文
  • The late Richard Hackman of Harvard University once argued, I have no question that when you have a team, the possibility exists that it will generate magic, producing something extraordinary… But don't count on it.

    出自-2017年6月阅读原文
  • What people were like when they came in had greater consequence than what happened once they were there.

    出自-2016年6月阅读原文
  • Trigger its built-in alarm system at once.

    出自-2016年6月阅读原文
  • She has once run a pre-K program.

    出自-2016年6月阅读原文
  • Once driverless cars are actually for sale, the early adopters will be the people who can afford to buy them.

    出自-2016年6月阅读原文
  • Wireless devices will transmit signals so as to activate the alarm once something wrong is detected.

    出自-2016年12月阅读原文
  • Sugar, alcohol and tobacco, economist Adam Smith once wrote, are commodities which are nowhere necessaries of life, which have become objects of almost universal consumption, and which are, therefore, extremely popular subjects of taxation.

    出自-2016年12月阅读原文
  • So, too, would the motion detectors in your home, so the thief will need to continue jamming once he's inside and searching for things to steal.

    出自-2016年12月阅读原文
  • This once-in-alifetime  event actually may take  place twice in some folks’ lives.

    出自-2016年12月听力原文
  • When Jonathan Swift proposed, in 1729, that the people of Ireland eat their children, he insisted it would solve three problems at once: feed the hungry masses, reduce the population during a severe depression, and stimulate the restaurant business.

    出自-2015年12月阅读原文
  • Once you have worthy opponents, set some ground rules so everyone understands responsibilities and boundaries.

    出自-2015年12月阅读原文
  • Once the essay was flawless, she would take an evening to walk me through my errors.

    出自-2015年12月阅读原文
  • Nearly two-thirds of us grab fast food once a week, and we get almost 25% of our daily calories from snacks.

    出自-2015年12月阅读原文
  • Franz Kafka once said: Writing is utter solitude ( ' , 独处 ), the descent into the cold abyss ( ' , 深渊 ) of oneself.

    出自-2015年12月阅读原文
  • Once, just after I returned from my year in Vienna, I was asked to translate for a German judge at an Olympiclevel horse event.

    出自-2015年12月听力原文
  • Once across, the ropes were tied down and wooden bridges were hung from them.

    出自-2015年12月听力原文
  • He had a terrible temper, and once threatened to kill another child.

    出自-2015年12月听力原文
  • they are not reused once a new edition comes out

    出自-2013年6月阅读原文
  • All computers do is fetch and work with numbers, he once explained, but do it fast enough and the results appear to be magic.

    出自-2012年12月阅读原文
  • And most noticeable of all, there is the phenomenon of large urban and suburban high schools that have split up into smaller units of a few hundred, generally housed in the same grounds that once boasted thousands of students all marching to the same band.

    出自-2012年6月阅读原文
  • I say you only live once and we work hard and what's the point if you can't go on holiday.

    出自-2011年12月阅读原文
  • We can get a lot of our ingredients once a week from the UK, Tamlyn explains.

    出自-2011年6月阅读原文
  • Tamlyn says that besides importing ingredients from Britain once a week, his restaurant also buys vegetables from the local markets

    出自-2011年6月阅读原文
  • it takes a long time to restore nature once damaged

    出自-2010年12月阅读原文
  • Once she lost a two-cent stamp and spent the night looking for it.

    出自-2014年6月听力原文
  • Get key information by reading just once or twice

    出自-2014年6月听力原文
  • Why did Donna go back to Brazil once again?

    出自-2013年12月听力原文
  • Finally, on June 7, McLaughlin once again demonstrated his carelessness by knocking down several mailboxes near the edge of the company's parking lot

    出自-2013年12月听力原文
  • But it's no longer what it once was in the region.

    出自-2012年6月听力原文
  • So some of the values they teach may not be as important in the culture as they once were.

    出自-2011年12月听力原文
  • It cannot be fully restored once damaged.

    出自-2011年6月听力原文
  • For once, we are the ones who are blocking the traffic, he says delightedly.

    2018年6月四级真题(第二套)阅读 Section B
  • An individual's genetics has a big influence on their height but once you average over whole populations, genetics plays a less key role.

    2019年6月四级真题(第二套)阅读 Section C
  • And here's one more: We went on a campaign trip once in Italy, and my wife spent the whole time worrying about bats getting into her hair.

    2017年6月四级真题(第二套)听力 Section B
  • Experimental users may try drugs once or twice.

    2015年12月四级真题(第二套)听力 Section C
  • Franz Kafka once said: Writing is utter solitude , the descent into the cold abyss of oneself.

    2015年12月四级真题(第二套)阅读 Section B
  • I met a woman once, an Italian.

    2016年12月四级真题(第一套)听力 Section B
  • In Japan, once when I was in the studio audience of a TV cooking show, I was asked to go up on the stage and taste the beef dish that was being prepared and tell what I thought.

    2015年12月四级真题(第一套)听力 Section C
  • Large mammals once wandered the volcano's slopes, but today, foxes, wild cats, rabbits and mice are more common.

    2019年6月四级真题(第二套)听力 Section C
  • Once the essay was flawless, she would take an evening to walk me through my errors.

    2015年12月四级真题(第二套)阅读 Section B
  • Once we're on the path of growth, we can continually move through the seasons of transformation and renewal.

    2017年6月四级真题(第二套)阅读 Section B
  • Once you are done demonstrating whatever concept was in the textbook, you throw away the pipe cleaners, the straws, the cardboard tubes.

    2019年6月四级真题(第三套)阅读 Section B
  • Once you get beyond the initial learning curve, knitting and crocheting can lower heart rate and blood pressure.

    2017年12月四级真题(第三套)阅读 Section B
  • Once you have worthy opponents, set some ground rules so everyone understands responsibilities and boundaries.

    2015年12月四级真题(第二套)阅读 Section C
  • Once, just after I returned from my year in Vienna, I was asked to translate for a German judge at an Olympic level horse event.

    2015年12月四级真题(第一套)听力 Section C
  • She suggested that the brain can process just so much at once, and that activities like knitting and crocheting make it harder for the brain to register pain signals.

    2017年12月四级真题(第三套)阅读 Section B
  • They have been huge supporters of the district's advanced mathematics program, which once began in the fourth grade but will now start in the sixth.

    2018年6月四级真题(第一套)阅读 Section B
  • Thomas Edison, the famous inventor, once said I've not failed.

    2019年12月四级真题(第一套)听力 Section B
  • When they interact, they aren't afraid to smell each other and will express themselves clearly and honestly. Once again, it seems we have a lot to learn from dogs.

    2019年12月四级真题(第二套)听力 Section C
考纲分布

12年出现 1

重要程度
  • 200%

    adv 曾经

  • 0%

    n 一次; 一回

  • 0%

    conj 一旦

考纲释义
  • adv. 曾经

    真题例句:

    • J. K. Galbraith once wrote, \Faced with a choice between changing one's mind and proving there is no need to do so.\

      J. K. Galbraith曾经写道,“面临改变主意和证明没有必要这样做之间的选择。”

      [2021年 CET6 阅读理解B]
  • n. 一次; 一回

    英文释义:

    one single time

  • conj. 一旦

    英文释义:

    as soon as

必考短语
用法讲解
  • once,as soon as两者均为从属连词,引导时间状语从句,都表示主句的动作紧跟在从句的动作之后发生。 once除表时间外,还表示条件,一般译作“一旦...就...”。 as soon as强调的只是时间,译作“刚...就...”或“一...就...”。

真题例句
  • The British traveler Charles Thompson spoke for many Grand Tourists when in 1744 he described himself as being impatiently desirous of viewing a country so famous in history, a country which once gave laws to the world, and which is at present the greatest school of music and painting, contains the noblest productions of sculpture and architecture, and is filled with cabinets of rarities, and collections of all kinds of historical relics.

    出自-2017年6月阅读原文
  • The elevation of the room that once belonged only to the servants to that of design showcase for the modem family tells the story of a century of social change.

    出自-2016年6月阅读原文
  • That falls far short of the billions of dollars people once expected it to generate.

    出自-2016年6月阅读原文
  • Parents are concerned that their children may get involved in criminal offences once they reach their teens.

    出自-2016年6月阅读原文
  • No wonder parents worry their own kids might spin out of control once they hit the turbulent waters of adolescence.

    出自-2016年6月阅读原文
  • It had, apparently, been fished out of existence; and the once mighty Newfoundland fleet now gropes about frantically for crab on the sea floor.

    出自-2016年6月阅读原文
  • About once a week, I have a client that will bring up a new certification I've never even heard of and I'm in this industry, said Kevin Wilhelm, chief executive officer of Sustainable Business Consulting.

    出自-2016年6月阅读原文
  • Putting in effect the policies in the agreement at once.

    出自-2016年12月阅读原文
  • Perlow calls this vicious cycle the cycle of responsiveness: Once bosses and colleagues experience an employee's increased responsiveness, they increase their demands on the employee's time.

    出自-2016年12月阅读原文
  • Consumers are becoming increasingly bored with what companies have to offer: A survey of 28,000 consumers in 28 countries released by Accenture found consumers are not as excited about technology as they once were.

    出自-2016年12月阅读原文
  • Stacy is going to walk you through the step-by-step process of becoming a social worker and Mill will tell you about the range of options you have once you get your social work degree, as well as the high standards of responsibility the social workers must adhere to.

    出自-2016年12月听力原文
  • that is, once you build it up, it has to go somewhere.

    出自-2015年12月阅读原文
  • Unfortunately for them ( ' , and often the taxpayers), our energy systems are a bit like an aircraft carrier: they are unbelievably expensive, they are built to last for a very long time, they have a huge amount of inertia ( ' , meaning it takes a lot of energy to set them moving), and they have a lot of momentum once they are set in motion.

    出自-2015年12月阅读原文
  • So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.

    出自-2015年12月阅读原文
  • Once you have started the boulder rolling, it develops momentum, which is defined by its mass and velocity.

    出自-2015年12月阅读原文
  • Now, she attributes much of her understanding of college to that: But once I got to campus, it was a completely different ball game that no one really prepared me for.

    出自-2015年12月阅读原文
  • By sanctioning this watered-down version of college, universities are catering to the social and educational needs of wealthy students at the expense of others who won't enjoy the financial backing or social connections of richer students once they graduate.

    出自-2015年12月阅读原文
  • \About once a week, I have a client that will bring up a new certification I've never even heard of and I'm in this industry,\ said Kevin wilhelm, chief executive officer of Sustainable Business Consulting.

    2016年6月六级真题(第一套)阅读 Section C
  • \Once we scale up, algorithms must be sensitive to tiny changes in identities and at the same time invariant to lighting, pose, age,\ Kemelmacher-Shlizerman said.

    2018年6月六级真题(第一套)阅读 Section C
  • As marketing professors Silvia Bellezza, Neeru Paharia, and Anat Keinan recently explained in Hazard Business Review HBR, leisure time was once seen as an indicator of high social status, something attainable only for those at the top.

    2017年12月六级真题(第三套)阅读 Section C
  • But once that money is gone, he says he doesn't know what he'll do.

    2016年6月六级真题(第一套)听力 Section C
  • But once these plants use up their stored reserve or tap out the underground supply, they cease growing and start to die.

    2018年6月六级真题(第一套)阅读 Section B
  • By sanctioning this watered-down version of college, universities are \catering to the social and educational needs of wealthy students at the expense of others \ who won't enjoy the financial backing or social connections of richer students once they gra

    2015年12月六级真题(第一套)阅读 Section C
  • Consumers are becoming increasingly bored with what companies have to offer: A survey of 28,000 consumers in 28 countries released by Accenture found consumers are not as excited about technology as they once were.

    2016年12月六级真题(第二套)阅读 Section B
  • Driving once seemed to be a very human skill.

    2019年6月六级真题(第三套)阅读 Section C
  • Each featuring a different researcher, one of whom they'd met once two years earlier.

    2019年12月六级真题(第一套)听力 Section C
  • first, keeping up with the pace of technological change; recruiting high-quality staff in a time of skills shortages in it as a whole and in a highly competitive market; and the issue of retaining staff once they've been recruited and trained.

    2016年12月六级真题(第二套)听力 Section C
  • Here, the brightly colored scenes that once decorated a mansion are being dug up.

    2019年6月六级真题(第二套)听力 Section B
  • If an adverse reaction to a drug is serious, consult your doctor for advice at once.

    2017年12月六级真题(第二套)听力 Section C
  • Momentum is said to be \conserved\, that is, once you build it up, it has to go somewhere.

    2015年12月六级真题(第一套)阅读 Section B
  • Native plants are coming back, and the fox once again bound about carefree.

    2018年12月六级真题(第三套)阅读 Section A
  • Now, she attributes much of her understanding of college to that: \But once I got to campus, it was a completely different ball game that no one really prepared me for.\

    2015年12月六级真题(第三套)阅读 Section B
  • Once armed with a method for gaining access to iPhones, the government could ask to use it proactively, before a suspected terrorist attack—leaving Apple in a bind as to whether to comply or risk an attack and suffer a public-relations nightmare.

    2017年12月六级真题(第三套)阅读 Section B
  • Once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.

    2017年12月六级真题(第三套)阅读 Section C
  • Once Farrant and her colleagues feel they have a better sense of which switches to throw, they will have to find the best way to do so in useful crops.

    2018年6月六级真题(第一套)阅读 Section B
  • Once one person looks at their phone, other people feel compelled to do the same, starting a chain reaction.

    2017年12月六级真题(第一套)阅读 Section B
  • Once purchased and trained, this would allow the casual user to save money and time, freeing up precious space in our busy lives to read a good book.

    2018年6月六级真题(第三套)阅读 Section A
  • Once the data and associated materials appear in a repository answering questions and handling complaints can take many hours.

    2017年12月六级真题(第二套)阅读 Section B
  • Once the final charts and tables are ready, I have to check them and organize a presentation.

    2016年6月六级真题(第二套)听力 Section A
  • Once the interviewers have been briefed, I send the client a schedule and then they get back to me with deadlines.

    2016年6月六级真题(第二套)听力 Section A
  • Once upon a time, Americans thought that if they work hard enough even in the face of adversity, they would be rewarded with success.

    2018年12月六级真题(第一套)听力 Section C
  • Once we recognize that these things happen to us, we are half way to doing something about them.

    2019年6月六级真题(第一套)听力 Section B
  • Once you get out of there, you become that part, only you're using music instead of dialogue.

    2015年12月六级真题(第一套)听力 Section A
  • Online security cameras, intelligent lighting and a wealth of sensors that control both temperature and air quality are offering an unprecedented level of control, efficiency, and improvements to what were once classed necessary costs when running a busin

    2017年12月六级真题(第二套)阅读 Section C
  • Perlow calls this vicious cycle the \cycle of responsiveness\: Once bosses and colleagues experience an employee's increased responsiveness, they increase their demands on the employee's time.

    2016年12月六级真题(第一套)阅读 Section B
  • Photography was once an expensive, laborious ordeal reserved for life's greatest milestones.

    2018年6月六级真题(第二套)阅读 Section C
  • piaget argued that once adolescents enter the world of work, their newly acquired ability to form hypotheses allows them to create representations that are too ideal.

    2016年6月六级真题(第三套)阅读 Section A
  • So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.

    2015年12月六级真题(第一套)阅读 Section B
  • Stacy is going to walk you through the step-by-step process of becoming a social worker and mill will tell you about the range of options you have once you get your social work degree, as well as the high standards of responsibility the social workers mus

    2016年12月六级真题(第一套)听力 Section C
  • The best seek to alleviate the external pressures on their pupils while equipping them better to understand and handle the world outside一 at once sheltering them and broadening their horizons.

    2019年12月六级真题(第三套)阅读 Section C
  • The elevation of the room that once belonged only to the servants to that of design showcase for the modern family tells the story of a century of social change.

    2016年6月六级真题(第二套)阅读 Section C
  • The extreme isolation of these massive farms leaves them often unattended, and monitored only once or twice a year, which means if the livestock falls ill or requires assistance, it can be a long time for farmers to discover.

    2018年12月六级真题(第三套)阅读 Section C
  • The order essentially asks Apple to hack its own devices, and once it is in place, the precedent could be used to justify law enforcement efforts to get around encryption technologies in other investigations far removed from national security threats.

    2017年12月六级真题(第三套)阅读 Section B
  • The Tanzanian government has once again started mining the lake for soda ash, used for making chemicals, glass and detergents.

    2017年12月六级真题(第三套)阅读 Section C
  • They help us take in more information, hold several ideas in mind at once and understand how different ideas relate to each other.

    2016年12月六级真题(第二套)听力 Section C
  • They typically appear about once in a decade.

    2018年12月六级真题(第二套)听力 Section B
  • Unfortunately for them and often the taxpayers, our energy systems are a bit like an aircraft carrier : they are unbelievably expensive, they are built to last for a very long time, they have a huge amount of inertia meaning it takes a lot of energy to se

    2015年12月六级真题(第一套)阅读 Section B
  • When I re-entered the full-time workforce a few years ago after a decade of solitary self-employment, there was one thing I was looking forward to the most: the opportunity to have work friends once again.

    2019年6月六级真题(第三套)阅读 Section C
  • Yet once they start growing, such plants seem not to retain the ability to hit the pause button on metabolism in their stems or leaves.

    2018年6月六级真题(第一套)阅读 Section B
  • You may have heard that Coca-Cola once contained an ingredient capable of sparking particular devotion in consumers: cocaine.

    2017年12月六级真题(第一套)阅读 Section C
考纲分布

18年出现 60

重要程度
  • 60%

    adv 以前; 曾经

  • 20%

    conj 一旦; 一...就

  • 20%

    n 一次; 一回

考纲释义
  • adv. 以前; 曾经

    真题例句:

    • Manufacturing is not the economic engine that it once was.

      制造业不再是曾经的经济引擎。

      [2018年 英语二 阅读理解A]
    • As a linguist once said, \You can get people to think it's nonsense at the same time that you buy into it.\

      正如一位语言学家曾经说过的那样,“你可以让人们认为它是胡说八道的同时相信它。”

      [2015年 英语二 阅读理解A]
    • King Juan Carlos of Spain once insisted \kings don't abdicate, they die in their sleep.\

      西班牙国王胡安·卡洛斯曾坚称“国王不会退位,他们会在睡梦中死去。”

      [2015年 英语一 阅读理解A]
  • conj. 一旦; 一...就

    英文释义:

    as soon as

    真题例句:

    • Once on the calendar, I protect this time like I would a doctor's appointment or important meeting.

      一旦列入日程表,我会像预约医生或重要会议一样保护这段时间。

      [2018年 英语二 阅读理解A]
    • I truly believe that once you get that first word out everything else will just flow.

      我真的相信,一旦你说出第一个字,其他的一切都会水到渠成。

      [2018年 英语二 阅读理解B]
    • But once we rip off the band-aid, tuck our smartphones in our pockets and look up, it doesn't hurt so bad.

      但是,一旦我们撕下创可贴,把智能手机塞进口袋,抬头向上看,就不会那么痛了。

      [2015年 英语二 完型填空]
  • n. 一次; 一回

    英文释义:

    one single time

    真题例句:

    • Today is no different, with academics, writers, and activists once again warning that technology is replacing human workers.

      今天也不例外,学者、作家和活动家再次警告说,技术正在取代人类工人。

      [2017年 英语二 完型填空]
    • According to the National Center for Education Statistics, nearly 80 percent of college students end up changing their majors at least once.

      根据国家教育统计中心的数据,近80%的大学生最终至少换过一次专业。

      [2017年 英语二 阅读理解A]
    • Buy all your clothes at once with a stylist instead of shopping alone, one article of clothing at a time.

      和造型师一起一次性买下你所有的衣服,而不是一个人购物,一次买一件衣服。

      [2016年 英语一 阅读理解B]
必考短语
用法讲解
  • once用作副词,表示“一次”时,是频度状语,通常放在句末。例:I have been there once.我到过那儿一次。

  • once用作副词,表示“曾经;一度”时,是表示不确定时间的副词,通常放在行为动词之前,助动词、情态动词、be动词之后,有时也可以放在句首。例:I once went around the world.过去我周游过全球。

  • once用作连词,指“一……就;一旦”,引导时间状语从句,从句用现在时表将来。例:Once you start,you will never give up.一旦你开始了,就不要放弃。

真题例句
  • But don't bother trying to kill off old habits; once those ruts of procedure are worn into the hippocampus, they're there to stay.

    出自-2009年考研阅读原文
  • To read such books today is to marvel at the fact that their learned contents were once deemed suitable for publication in general-circulation dailies.

    出自-2010年考研阅读原文
  • Rage Against the Haze failed once state funding was cut.

    出自-2012年考研阅读原文
  • Once a discovery claim becomes public, the discoverer receives intellectual credit.

    出自-2012年考研阅读原文
  • Nobel Laureate and physiologist Albert Azent-Gyorgyi once described discovery as “seeing what everybody has seen and thinking what nobody has thought.”

    出自-2012年考研阅读原文
  • Sadly, the spirit of inquiry once at home on campus has been replaced by the use of the humanities and social sciences as vehicles for publicizing “progressive,” or left- liberal propaganda.

    出自-2014年考研阅读原文
  • King Juan Carlos of Spain once insisted “kings don’t abdicate, they dare in their sleep.

    出自-2015年考研阅读原文
  • Buy all your clothes once with a stylist instead of shopping alone, one article of clothing at a time.

    出自-2016年考研阅读原文
  • Kennedy once said that a country’s GDP measures “everything except that which makes life worthwhile.”

    出自-2017年考研阅读原文
  • A small but vocal group of Hawaiians and environments have long viewed their presence as disrespect for sacred land and a painful reminder of the occupation of what was once a sovereign nation.

    出自-2017年考研阅读原文
  • By the time Shakespeare was twenty-five, Lyly, Peele, and Greene had made comedies that were at once popular and literary; Kyd had written a tragedy that crowded the pit; and Marlowe had brought poetry and genius to triumph on the common stage - where they had played no part since the death of Euripides.

    出自-2018年考研翻译原文
  • Winston Churchill once walked its corridors and Japanese emissaries met here with Secretary of State Cordell Hull after the bombing of Pearl Harbor.

    出自-2018年考研阅读原文
  • \Once on the calendar I protect this time like I would a doctor's appointment or important meeting\, he writes.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • According to the National Center for Education Statistics, nearly 80 percent of college students end up changing their majors at least once.

    2017年考研真题(英语二)阅读理解 Section Ⅱ
  • And in that, once more, we need to look to the example of our children, to whom happiness is not a goal but a natural byproduct of the way they live.

    2016年考研真题(英语二)阅读理解 Section Ⅱ
  • Biologists estimate that as many as 2 million lesser prairie chickens一-a kind of bird living on stretching grasslands - once lent red to the often grey landscape of the mid-western and southwestern United States.

    2016年考研真题(英语二)阅读理解 Section Ⅱ
  • But don't bother trying to kill off old habits; once those ruts of procedure are worn into the brain, they're there to stay.

    2009年考研真题(英语一)阅读理解 Section Ⅱ
  • But once we rip off the band-aid, tuck our smartphones in our pockets and look up, it doesn't hurt so bad.

    2015年考研真题(英语二)完形填空 Section Ⅰ
  • Chewing gum, once bought primarily by adolescent boys, is now featured in commercials as a breath freshener and teeth cleanser for use after a meal.

    2010年考研真题(英语二)阅读理解 Section Ⅱ
  • Even if families are less likely to sit down to eat together than was once the case, millions of Britons will none the less have partaken this weekend of one of the nation's great traditions: the Sunday roast.

    2020年考研真题(英语一)完形填空 Section Ⅰ
  • Following the explosion of creativity in Florence during the 14th century known as the Renaissance, the modern world saw a departure from what it had once known.

    2020年考研真题(英语一)阅读理解 Section Ⅱ
  • Google and microsoft are among companies that already have these \single sign-on\ systems that make it possible for users to log in just once but use many different services.

    2011年考研真题(英语二)完形填空 Section Ⅰ
  • He quotes a giant of classical economies, Alfred Marshall, in describing this financial impatience as acting like \children who pick the plums out of their pudding to eat them at once\ rather than putting them aside to be eaten last.

    2019年考研真题(英语一)阅读理解 Section Ⅱ
  • I truly believe that once you get that first word out everything else will just flow.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • In other words, at a time when the working class has turned the country on its political head, frustrated that the opportunity that once defined America is vanishing, one obvious solution is staring us in the face.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • Manufacturing is not the economic engine that it once was.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • My favorite actor will smith once said, \Fear is not real.\

    2015年考研真题(英语二)阅读理解 Section Ⅱ
  • Once on the calendar I protect this time like I would a doctor's appointment or important meeting, he writes.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • Otherwise outside directors will follow the example of Ms. Simmons, once again very popular on campus.

    2011年考研真题(英语二)阅读理解 Section Ⅱ
  • Robert F. Kennedy once said that a country's GDP measures \everything except that which makes life worthwhile.\

    2017年考研真题(英语一)阅读理解 Section Ⅱ
  • Sadly, the spirit of inquiry once at home on campus has been replaced by the use of the humanities and social sciences as vehicles for publicizing \progressive, \ or left- liberal propaganda.

    2014年考研真题(英语一)阅读理解 Section Ⅱ
  • The job security that the US economy once offered to high school graduates has largely evaporated.

    2018年考研真题(英语二)阅读理解 Section Ⅱ
  • Today is no different, with academics, writers, and activists once again warning that technology is replacing human workers.

    2017年考研真题(英语二)完形填空 Section Ⅰ
  • When there is rapid improvement in the price and performance of technology, jobs that were once thought to be immune from automation suddenly become threatened.

    2014年考研真题(英语二)阅读理解 Section Ⅱ
  • winston Churchill once walked its corridors and Japanese emissaries met here with Secretary of State Cordell Hull after the bombing of Pearl Harbor.

    2018年考研真题(英语一)阅读理解 Section Ⅱ
  • You won't be eating out a lot, but save your pennies and once every few months treat yourself to a set lunch at a good restaurant —£1.75 a week for three months gives you £21 — more than enough for a three course lunch at Michelin-Starred Arbutus.

    2013年考研真题(英语二)阅读理解 Section Ⅱ