339　have to和have got to

◎ 两者都表示“必须，不得不”，to后要加动词原形。have to的否定式为haven't to或don't have to，疑问式为Have you…？或Do you have to…？并可以与shall，will或情态动词连用，如will have to等。have got to的否定式只有一种形式haven't got to，疑问式也只有一种形式：Have you got to…？并且不可同助动词或情态动词连用。

比较

I have to leave now. 我现在得走了。

I haven't to leave now.

I don't have to leave now.

Have you to leave now？

I shall have to leave now.

I have got to go there.

我必须到那里去。

I haven't got to go there.

Have you got to go there？

I shall have got to go there.

Do we have got to do it again？

Do we have to do it again？

我们必须再做那件事吗？