I don't know how this happened.

我不知道这事怎么发生的。

You know how prickly she is.

你知道她多么容易生气。

I don't want to know how he died.

我不想知道他是如何死的。

I don't know how you stick that job.

我不知道那活儿你怎么受得了。

I don't know how she puts up with him.

我不明白她怎么受得了他。

He did not know how he ought to behave.

他不知道自己应该怎样表现。

We don't know how the transcript leaked.

我们不知道抄本是怎样泄露的。

You never know how he is going to react.

你根本不知道他会作何反应。

I don't know how you can eat that stuff!

我不明白你怎么能吃那种东西！

I don't know how you tolerate that noise!

我不知道你怎么能忍受那样的噪音！

I don't know how long my crying jag lasted.

我不知道我一阵大哭持续了多久。

I don't know how I made it through the week.

我不知道自己是怎么熬过那个星期的。

I don't know how he's going to get on in life.

我不知道他将如何出人头地。

I'm stumped. I don't know how they got here before us.

我搞不懂了。我不知道他们怎么比我们来得还早。

I don't know how he could do this to his own daughter.

我真想像不出他怎么能这样对待自己的女儿。

I don't know how she manages on her own with four kids.

我真不知道她一个人是怎么养活她那四个孩子的。

I don't know how we're going to manage, the way things are.

按目前这样的情况，我不知道我们要如何应付。

You don't know how good it is to speak to somebody from home.

你不知道跟家里来的人说说话有多好！

"Do these kids know how lucky they are?" Jackson asked rhetorically.

“这些孩子知道他们有多幸运吗？”杰克逊反问道。

I know how to sew a button on.

我知道怎么缝上扣子。

He didn't know how to begin.

他不知道如何开场。

I didn't know how much to bring.

我不知道该带多少。

Let me know how I can help.

我能帮什么忙，只管说。

Do you know how to use spreadsheets?

你知道电子数据表的使用方法吗？

I know how it works in general terms.

我大致知道其中的运作原理。

Do you know how to form the past tense?

你知道怎样构成过去时吗？

Do you know how to deactivate the alarm?

你知道如何让闹钟不响吗？

She doesn't know how to behave in public.

她在公共场合举止无措。

Do you know how to work the coffee machine?

你会使用咖啡机吗？

I don't know how to make polite conversation.

我不晓得怎么说应酬话。