题目内容：

情态动词＋have done
must have done/can't have done
should have done/shouldn't have done
need have done/needn't have done
may(might) have done/haven't done
could have done/couldn't have done
would have done/wouldn't have done
如何用?我这样分正确吗?
有 might not /may not +have done
would/wouldn't have done

优质解答

情态动词＋ have done都是表示对过去动作的推测must have done 过去一定做了某事should /need have done 本来应该／需要做某事（却没做）should't/needn't have done本来不应该／不需要做某事（却做了）may/might h...