have to和have got to 的区别是什么？

1， 在表示一次性动作时，have to和 have got to 是能够互换的：

I have (got) to be back by ten o’clock.

本人必需10点前返回来。

I haven’t got to work tomorrow.

本人明天不用上班。

I’ve got to do something! Langdon thought.

兰登想：“本人得做点什么！”

2， 但是，当表示习气性动作时，特别是当句中含有表示经常性的副词（如always, often, sometimes等）时，则应运用have to , 而不运用have got to:

I don’t usually have to work on Sundays.

通常本人再星期天不用工作。

I often have to get up at 5.

本人常常必需五点起床。

3, have to 与 have got to 的另一区别，就是后者不大用于过去时。

They didn’t have to worry about money.

他们那时不用为金钱而操心。

I had to walk very fast to overtake you.

为了赶上你，本人不得不走得很快。

4， 最后一个区别，就是have to 前可加助动词或神态动词，或者用在停止体和完成体构造中，而have got to却不能：

I shall have to help him as much as I can.

本人将不得不尽本人所能去协助他。

He may have to cancel his plan.

他或许不得不取消这个方案。

People are having to boil their drinking water during this emergency.

在这个紧急状况下，老百姓必需煮沸他们的饮用水。

The administration has had to make unpopular decisions.

行政部门不得不做出不得人心的决议。
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