can't have done与could't have done的区别

can't have done与could't have done的区别 could't have done和can't have done的区别 can have done和could have done有无区别?can't have done和couldn't h 究竟can't have done与could't have done有什麼分别? can have ddone 与could have done 的区别在于? can have done 和could have done 的区别 could't do 和could't have done还有could do,could have done的区别和用 must have done,must do,can't have done,can't do的区别 mustn't have done和can't have done的区别 needn't have done与shouldn't have done的区别? 有没有can have done sth?could have done sth有两种意思吗?can't/couldn' 1、shouldn't have done mustn't have done can't havedone 有什么区别