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nEED not hAvE DonE

must have done的否定形式是can't have done. 用must来表示肯定、猜测;用can't 来表示动作不可能发生,如: - that must be wrong. - No, it can't be wrong. 过去式举例:He walked past me without speaking. He can't have seen me. couldn'...

1.He need not have done it. 他本不需要做这件事。 2.Yet they need not have done. 然而他们没有必要这样做。 3.You need not have done it. 你本来不必做此事。 4.I quitted smokinglast month, but I need not have done so.上个月我把烟戒...

情态动词must+have done只用于肯定句中,表示对过去发生的事情或状态进行肯定的推测,意为”过去一定做过某事”. 如: 1)It must have rained last night,for the road is all wet. 昨天晚上一定是下雨了,因为路还湿着. 情态动词can/could可用于...

need have done的意思是“本不需要做但却做了。。。”,此句译为“你昨天本不需要买这本书”(实际上你买了)。固定用法哦~~

should have done 意思是“应该做但没做”,表示责备could have done 能做但没做dare not have done 做了不敢做的need not have done 做了不需要做的must ...

情态动词所表达的可能性程度:must/can't  should/shouldn't  might/may (not) 另外两个"类情态词的形式:"need/needn't; have ...

love, need prefer, prepare, promise, want, wish...答案:D. why not 后面接不带to 的不定式,因此选...完成式 to have done to have been done完成进行...

need 是一个情态动词, 他的用法完全和其他情态动词一样, 但 need 还可当作实...ought not to have done 句型。表示一件不该做的事情却做了。You ought not...

一、作及物动词,意为“喜欢”,后接名词或代词,表示对某一事物的兴趣或爱好。例如: I like fish and vegetables very much. Jack doesn't like his work. 二、常与would,should连用,表示“想要、愿意、希望”,语气较为客气委婉。例如: Would y...

need do sth. 中的need是情态动词,后面跟动词原形;need to do sth.中一般是实意动词, need的用法讲解,供参考: 一、作情态动词 1.need作情态动词无人称或数的变化, 后接动词原形,多用于否定句和疑问句中。如:You needn't worry.你不必担...

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