didn't 和couldn't的区别,

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/06/06 09:57:20

did not 和could not 都是过去式,前者的意思是没有的意思,后加动词,有否定的意思---没有干什么.could not 是不能的意思,不一定一定要表示过去可能,也可表能力---不能,与can't同义!eg.i didn't do it(我没有干这件事) i couldn't do it(我不能做这件事)i couldn't have done it(我不可能有做过这件事)

didn't 和couldn't的区别, why not,why didn't,why couldn't的区别 haven't和 didn't的区别 couldn't和shouldn't的区别,急要 couldn't 和shouldn't 区别, can't与couldn't的区别 couldn't与can't的区别! could't与couldn't的区别? could和 must和 couldn't 的区别和用法? hadn't 和 didn't have的区别 couldn't don't have to needn't的区别 can’t 和 won’t didn’t doesn’t 的区别是啥