否定句怎样该

Question

如题所述

Answer 1

1.含有be动词的句子，在改否定句时，需要在be动词后加not，缩写形式为（isn't aren't am和not没有缩写 ） He is a boy.---- He isn't a boy.
2.含有助动词（do,does，did）的句子， 在改否定句时，需要在助动词后加not，缩写形式为（don't doesn't didn't）;注意用到dose或did时，原句中的实意动词要还原。
I play football.---- I don't play football.
He plays football.---- He doesn't play football.
He played football yesterday.---- He didn't play football.
3. 含有情态动词（can, may, must）的句子， 在改否定句时，需要在情态动词动词后加not，缩写形式为(can't mustn't).
I can play football.---- I can't play football.
希望可以帮到你！

Answer 2

怎么改否定句？

Answer 3

就是在动词后面加not 如果有be动词在后面加not
例；she knows that her dream will be came true 因为它是单三形式，所以后面变否定句应该把know的S去掉加dose就OK 了

Answer 4

加上否定词，
如，you are a good boy. 变否定 you aren't a good boy
I like playing football, 变否定 I don't like playing football.
祝你学习进步！别忘了采纳，(*^__^*) 嘻嘻……

Answer 5

把肯定变否定啊