to be done 和having been done的用法
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发布时间:2022-05-08 18:17
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热心网友
时间:2024-01-26 05:54
to be done是不定式一般式的被动语态、如A lot needs to be done. 有一系列工作要做。
having been done是现在分词完成式having done的被动态。表示该动作发生在主句动作之前已经做完。如:Having been cleaned ,the classroom is tidy now.
热心网友
时间:2024-01-26 05:55
用“to be done”,强调该动作是被执行。
He was said to be sent to abroad. 据说他要被送出国。
用“to have done”或“to have been done”,表该动作已完成,如:
I\'m sorry to have kept you so long. 对不起让你久等了。
热心网友
时间:2024-01-26 05:55
to be done指的是要去做某事(还未做)
have been done完成式,指的是已经做了某事
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