have的否定形式?
have 的否定形式应该为 don't have/haven't , has 的否定形式应该为 doesn't have/hasn't.
一、have/has做实意动词
1、解释
实意动词原形变否定形式时,在实意动词前加助动词do,do后加not, 缩写成don't。动词为三单形式时,do变为does,does后加not, 缩写成doesn't 。
所以,当have/has做动词时,have 的否定形式应该为 don't have , has 的否定形式应该为 doesn't have.
2、举例
We have some shops on the island. 改为否定形式:We don't have any shops on the island.
She has some shops on the island. 改为否定形式:She doesn't have any shops on the island.
二、have/has做助动词时
1、解释
have/has做助动词时 ,与过去分词连用构成完成时。此时,have 的否定形式应该为haven't , has 的否定形式应该为 hasn't.
2、举例
they have already gone. 改为否定形式:they haven't gone yet.
Alex has already gone. 改为否定形式:Alex hasn't gone yet.