have to的用法？

have to的用法如下：have to 后接动词原形。

Have to是情态动词 ,意思是“必须、 不得不”。have to的三单形式是 has to 。



I have to stay at home .

我不得不呆在家。

My mother has to get up early.

我妈妈不得不起床早。

have to /has to 的否定句分别在have to 或has to 前加don't 或doesn't.

一般疑问句在句首加do或does。

例如：



1. They have to go to Shanghai. 他们不得不去上海。

否：They don't have to go to Shanghai.

一般疑问句：Do they have to go to Shanghai？

Yes, they do.

No, they don't.

2. Tom has to study hard. Tom 不得不努力学习。

否：Tom doesn't have to study hard.

一般疑问句：Does Tom have to study hard？

Yes, he does.

No, he doesn't.

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