didn't 和couldn't的区别,

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 17:25:37
didn't 和couldn't的区别,
xQJ@qB@ȿ6h@uJ[Ĥ* t!Mg_+qfw99j=7AǺ8-tWI9:ȶM@T`Sfl; ֑^Ȝ2aT88+I , %@<)Zm "dÞ.TO6$ݽ,KQhOe؀;jdO:>ޞ~6HD"Fpw:$IjIODk]+KXLjW

didn't 和couldn't的区别,
didn't 和couldn't的区别,

didn't 和couldn't的区别,
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 过去式的 不是
couldn't 过去式 不可能,不能

didn't 过去式的 不是
couldn't 过去式 不可能,不能