needn't have done用法needn't have done 用法 这是个什么句型?还有别的吗?别如must't have done等

needn't have done用法needn't have done 用法 这是个什么句型?还有别的吗?别如must't have done等 区别shouldn't have done 和 needn't have done 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 needn't needn't have done 和don't need to 的区别 musn't have done can't have done用法区别 needn't have done与shouldn't have done的区别? needn't have done造句needn't have doneshould have doneremide sb to do sth造一个句子,有翻译 can't have done 的用法 关于英语ought to have done 与should have done的区别 有need have done needn,t have done 与should hneedn,t have done 与shouldn't have done 区别有need have done can have done could have done should have done should to do shouldn't have done shouldn't to do还有needn't have doneneedn't domustn't have donemay not have donemight not have done Needn't have done 和needn't do的区别!请告诉我具体的意思.还有,needn't do可以用在虚拟语气中吗?Needn't have done 一定要用在过去时态中吗? needn't have done和didn't need to do 有什么不同? didn't need to do 与needn't have done 的区别和相同点 情态动词+have done 用法及意义must have done need have done daren't have donecould never have done could have done 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 Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mus...Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mustn’t do D.shouldn’t have done中B和D有什么区别?Catherine,I have couldn't have done,不可能已经?请举例说明用法? must/should/shouldn't/needn't/could/couldn't/may/mought+have done有什么区别?谢谢每一个词都加have done