is having done是什么时态

回答
爱扬教育

2022-03-19

is having done是动词-ing形式的完成式,表示该动作发生在谓语动词之前。
例句:
He is responsible for having done such a thing.
他应为做如此的事而负责。
He is accredited with having done it.
人们认为这件事是他干的。

扩展资料

  Someone said, "The biggest part of courage is having done it before."

  有人说,“勇气的最大内容是经历过。”

  It would be rash to try an exam like BEC Higher without having done any preparation at all, even if your English is very good.

  即使你的英语很好,如果你没有做任何准备就参加 BEC 高级考试,那也太草率了。

  She always attends to her own serious business herself, as then she is sure of having it done properly.

  她总是亲自料理自己的正经事,因为那时她肯定能把它做好。