情态动词have to的否定形式是don`t have to还是haven`t to?如题.

问题描述:

情态动词have to的否定形式是don`t have to还是haven`t to?
如题.

have not to

have not to.
最好不要用haven't to,否则过于肯定.

don`t have to
have to是作为实义动词用的

don`t have to是英式
haven`t to是美式