couldn't have done与couldn't区别以及当could have done表示对过去的猜测时,could have done与could有什么区别?
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couldn't have done与couldn't区别以及当could have done表示对过去的猜测时,could have done与could有什么区别?
couldn't have done与couldn't区别
以及当could have done表示对过去的猜测时,could have done与could有什么区别?
couldn't have done与couldn't区别以及当could have done表示对过去的猜测时,could have done与could有什么区别?
couldn't表示不可能,无推测意而can有推测意译为可能.could have done有对过去的猜测意也有用做虚拟语气的用法可译为本可以去做...而couldn't have done 为could have done的否定式
could have done 表示对过去的猜测时,表示本可以做却没做
could表示对过去的猜测时,表示不可能做过某事
couldn't have done 表示本不应该做却做了
couldn't 表示不允许做某事或不应该
could have done本来能够
could能
couldn't have done与couldn't区别以及当could have done表示对过去的猜测时,could have done与could有什么区别?
should have done ,shouldn't have done.could have done,couldn't have done
couldn't have done和couldn't do的区别
they couldn't have done better是什么意思
should have done和shouldn't have done,couldn't have
求两组英语句型的解释could have done 和 couldn't have doneshould have done 和 shouldn't have done
couldn't have done和mightn't have done有什么区别
couldn't have done,不可能已经?请举例说明用法?
英语中何时使用wouldn,t have done shouldn,t have done couldn,t have done needn,t have donewouldn have done shouldn have done could have done needn have done 呢
Whitout you _____ us, we couldn't have done it.A.helped B.helping C.being helped D.having helped
can have done和could have done有无区别?can't have done和couldn't have done有无区别?如果有,区别是什么?
I couldn’t have hoped for a better outcome什么意思,另外can't have done和couldn't have done什么区别
i don't think he could have done better than that,()?A.do i B.don't i C.could he D.couldn't he
1 wish I __to repair the bike .I only made it worsea)did not try B)wouldn't try c) had not tried d) wouldn't have tried 2 she__it ,beacuse she was not on the spot thena)shouldn't have done b) wouldn't have done c)mustn't have done d)couldn't have don
couldn't have done?couldn't have done究竟表示对过去的否定推测,还是表示本不能做到的事做到了?
couldn`t have done 不用于虚拟语气 么couldn`t have done 不用于虚拟语气 那要是说 本不能够做..怎么表达
有没有can have done sth?could have done sth有两种意思吗?can't/couldn't have done sth意思又是什么能不能举几个例子?
情态动词+have donemust have done/can't have doneshould have done/shouldn't have doneneed have done/needn't have donemay(might) have done/haven't donecould have done/couldn't have donewould have done/wouldn't have done如何用?我这样分正