【英语语法】肯定变否定
postive —> negative
Lesson 1
We use (not/n't) in negative sentences(在否定句中使用)
例子:
- am (肯定)am not ('m not)(否定)
- is (肯定)is not(isn't or 's not)(否定)
- are not (肯定)(aren't 're not) (否定)
例句:
I'm not tired .我不累
It isn't raining . 没有下雨。
They aren't here.没有下雨。
lesson 2
don't /doesn't/didn't
present : l /we/you/they don't
:he/she/it dosen't
past:
:l/they/he/she etc. : didn't