have to

導出

: must : such as

a — used to say that something is required or necessary必须；不得不

You have to follow the rules.你必须遵守规则。
You have to stop. [=you must stop; I command you to stop]你必须停下来。
I told him what he had to do. [=what he must do]我已告诉他必须做什么。
We have to correct these problems soon or the project will fail.我们必须赶紧纠正这些问题，否则项目就会失败。
I have to remember to stop at the store.我必须记住在那家商店停一下。
“Do you have to go?” “Yes, I'm afraid I really have to.”“你必须走吗？”“是的，恐怕我真的得走了。”
If you have to go, at least wait until the storm is over.如果你非走不可，最起码等暴风雨停了再走。
Do what you have to (do).做你该做的事。
I didn't want to do it but I had to.我并不想做这事，但我不得不做。

— also have got to

◊ Note the difference in meaning between not have to and must not.注意not have to和must not的区别。

You don't have to do it. [=it is not necessary for you to do it]你不必这么做。
You must not do it. [=you are not allowed to do it; you are forbidden to do it]你不可以这么做。

b — used to say that something is required by a rule or law（按规定或法律）必须，务必

— also have got to

c — used to say that something is desired or should be done（按要求）一定，应该

You have to read this book. It's fantastic!你应该看看这本书。真是太精彩了！
You have to come visit us soon. [=we would like to have you visit us soon]你一定要早点来看我们。
You really have to see the doctor about that cough. [=I urge you to see the doctor; I really think you need to see the doctor]你真该去医院看看咳嗽。

— also have got to

d — used to say that something is very likely很可能；肯定

It has to be close to noon.肯定快到中午了。
She has to be the most beautiful woman I've ever seen. [=I think she is the most beautiful woman I've ever seen]她肯定是我见过的最美丽的女人。
He has to have a lot of money to live the way he does.他肯定很有钱才能过那样的生活。
The bus has to be coming soon.公共汽车肯定快要来了。
There has to be some mistake.肯定是出了差错。

— also have got to

e — used in various spoken phrases to emphasize a statement用于各种口语短语，表强调

— also have got to

f — used in questions or statements that express annoyance or anger干吗非得要，总是要（用于疑问句或陈述句，表气恼或愤怒）

— also have got to

⇒ Main Entry: have