couldn't have finished和 can't have finished 的区别
couldn't have finished和 can't have finished 的区别
He can't have finished his homework,__he
i can't follow youhoney ,we have finished already是什么意思
can’t / couldn’t have
能否解释一下musn't,needn't ,don't have to,can't ,couldn't的区别?
Thanks to Maggie's timely help,___we couldn't have finished
I couldn’t possibly have finished such a long book in such a
情态动词can't have done 和couldn't have done 有什么区别吗
You haven't finished it ,have you?
why have you not finished it yet?和why haven't you finished i
can have done和could have done有无区别?can't have done和couldn't h
can’t have been与couldn’t have been的区别?