I have a bad headache.

我头疼得厉害。

I have a bad headache. I'll visit the doctor.

我头疼的厉害，要去看看医生了。

Teacher: I'd like you to be very quiet today, class. I have a bad headache.

老师：同学们！我希望你们安静一点，因为我头痛。

If you are leaking, your best possible outcome is you have a really bad headache, kind of like you have a spinal tap or other piercing of the dura.

一旦发生泄露，最打的可能性是引起严重的头痛，就好像是脊椎抽液，或者硬脑膜被穿透的感觉。

I have get a bad headache.

我头痛得厉害。

Doctor, I have a bad cough and a headache.

医生，我咳嗽咳得很厉害，还头疼。

I have a really bad headache today.

我今天头疼得厉害。

Grind to taking an examination of for the person, choosing which school is relatively have a headache, because of each schools read grind the good and bad are intermingled of quality it may be said.

对于考研人来说，选择哪所学校是较为头痛的，因为各个学校的读研质量可谓良莠不齐。

Because I have got a bad headache, I am not going to the concert.

因为我头疼得厉害，所以不打算听音乐会。

You might have a splitting headache, or a slipped disk, bad breath, a toothache, chronic gas, dry lips, or an ingrown toenail.

你也许会爆裂似的头痛，或跌倒，口臭，牙疼，放屁，嘴唇干裂，或指甲长到肉里。

Have you got a high fever? (a cough, a bad headache)?

你发烧(咳嗽，剧烈头痛)吗？