had done的用法和含义
1、用法不同
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照。
例句:I had finished my homework before my father came back.
在我父亲回来之前,我已经完成了家庭作业。
had been done 则是过去的过去,是过去完成的被动态时。
例句:The rooms had been cleaned when I came.
我来的时候,房间已经被打扫了。
2、含义不同
had done 做过
例句:What I did was right and if I had done anything
less it would have been wrong.
我做的一切都是正确的,如果我少做了一点点,就会出错。
had been done 已经完成
例句:She knew it would be difficult to undo the damage that had been done
她知道想要消除已经造成的损害是很难的。
扩展资料:
1、have\has done 做过某事。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。
例句:I have finished my homework.
我已经做完作业了。
He will have to answer for what he has done.
他将对他的所作所为负责。
2、have/has been done 已经。是现在完成时的被动语态。表示某事被做,并对现在有影响。
例句:ots of targets have been set but very little has been done.
制定了很多目标,但是几乎没有实现的。