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nEED not hAvE DonE

didn‘t need to do里need是普通动词,就是need本来的意思,(过去)没必要/不需要做某事 need not have done 里need是情态动词,意思是本来无必要做某事(却做了),本不该做某事 例如: He did not need to come early, so he came late. 他不需...

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'...

虚拟语气,指:本不该/本不必做某事,但是事实是做了 而need have done 指本该做某事,但却没做

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...

should not have done / ought not to have done:表示过去本不应该做某事但事实上却做了。 need have done:表示过去本来有必要去做某事,但事实上没有做。 ne...

What happens from this moment forwards is not my...2. You need me a lot more than I need you....25. No one normal could have done that. Now,...

(8)Whatweneedistime.(9)Whatweneedaregooddoctors...(should+do/should+havedone)例句4,5,6,11.主语...例如:Itdoesn’tmatterwhetherheiswrongornot.(5)...

need 可以做情态动词, 但用法不是 need sb do sth, 用法同其他情态动词 同时need 也可以做普通动词,就有了 need sb to do sth. 这种用法

Please consider what they’ve done for you and ...I don’t need to tell you that life in ...Although you have to go your separate ways now,...

need to do sth实义动词 need do sth. 没有这种用法,有need doing,表被动 needn`t do sth情态动词 don`t need实义动词 “need”双重角色的用法及其区别 “need”既可以作情态动词,也可以作实义动词,但是它们的用法不同。 作为情态动词的“need”的...

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