had had been done是什么时态

回答
爱扬教育

2022-03-11

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“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。

扩展资料

  过去将来完成进行时:(would have been doing)

  表示动作从过去某一时间开始一直延续到过去将来某一时间,期间一直有规律在进行、不曾间断,并且有可能继续延续下去。

  例:They said that by the end of the following month, the project would have been being worked for 3 years.

  他们说到第二个月底为止,这项工程就已经不停地进行了3年了。

  将来完成时(will have done)

  ①表示一个动作到将来某个时间为止已经完成,强调对将来那个时间产生的影响。

  例:Pick me up at 8 o'clock,I will have had breakfast by then.

  早上8点钟你来接我,到时我已经吃完早饭了.

  ②表示一个动作延续到将来某个时间,并且有可能继续延续下去。

  例:The conference will have lasted a full week by the time it ends.

  会议从开始到结束将持续整整一个星期。

  将来完成进行时:(will have been doing)

  表示一个动作延续到将来某个时间,期间一直有规律在进行、不曾间断,并且有可能继续延续下去。

  例:By the end of next month, the project will have been being worked for 3 years.

  到下个月底为止,这项工程就已经不停地进行了3年了。