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hAD BEEn DonE

had been done 表示过去的过去,是过去完成的被动态时。(当你想说发生在过去的两件事时,就要分清谁先谁后。先发生的用过去完成时,后发生的要用过去时)。 如:The rooms had been cleaned when I came. 我来的时候,房间已经被打扫了。 have/...

have\has done 叫现在完成时。表示动作发生在过去,对现在有一定的影响。通常与时间段连用。 如:I have finished my homework. / It has rained for three days. had done 是过去完成时。表示动作发生在过去的过去。通常句中有过去时间状语作参...

was done was done是一般过去时的被动语态was/were done之一。英语分为主要的八大时态,两大语态。其中,一般过去时即谓语动词为过去式,表示一个过去发生的动作,而被动语态是表示主语被怎样,其中主语是动作的被执行者即动作承受着。二者匹配...

had been done 过去完成时 过去某个时间之前就已经完成 例如,All of my execises have been done when you asked me yesterday. 昨天你问我的时候,我的作业已经做完了。 have been done现在完成时 到现在为止已经完成 例如,All of my execise...

1、首先要区分has been done与 had been done的区别: have/has been done 是现在完成时的被动语态。表示某事被做,。 如:The problems have been solved.这些问题已经被解决了。 had been done 则是过去的过去,是过去完成的被动态时。(当你...

1、首先要区分has been done与 had been done的区别:have/has been done 是现在完成时的被动语态。表示某事被做,。 如:The problems have been solved.这些问题已经被解决了。 had been done 则是过去的过去,是过去完成的被动态时...

Have/Has been done 与Have/Has done 的区别前者是被动,后者是主动 给你举个例子吧: 比如说:我已经完成了任务,可以说:I have finished the task.这是主动 如果说任务已经被完成了,你可以说:The task has been finished

1、首先要区分has been done与 had been done的区别: have/has been done 是现在完成时的被动语态。表示某事被做,。 如:The problems have been solved.这些问题已经被解决了。 had been done 则是过去的过去,是过去完成的被动态时。(当你...

his bicycle had been found这句话。为什么要用过去完成? 因为再过去之前就被发现了。 如果用his bicycle was been found不就行了吗? 这种用法是错误的。只可能是his bicycle has been found

sb.have done sth. 主语是人 sth. has been done(by sb.) 主语是事物 都表示以完成某物某事 例如: I have finished my homework.(have done句型) My homework has been done.(have been done句型) 另外,如果是had done,句中一定要含有表示...

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