can’t +have done
musn't have done can't have done
can't be done.should be done.should have done
must have done,must do,can't have done,can't do的区别
can have done和could have done有无区别?can't have done和couldn't h
1、shouldn't have done mustn't have done can't havedone 有什么区别
有没有can have done sth?could have done sth有两种意思吗?can't/couldn'
究竟can't have done与could't have done有什麼分别?
can't have done与could't have done的区别
could't have done和can't have done的区别
mustn't have done和can't have done的区别
情态动词can't have done 和couldn't have done 有什么区别吗
用must have been/done或can*t have been/done 改写句子