来源:网络资源 2022-10-18 08:54:26
过去完成时的概念与结构
概念:表示在过去某一时间或动作之前已经发生或完成了的动作,即“过去的过去( past-in-the-past )”。
构成:“助动词 had + 过去分词”,其中 had 通用于各种人称。
They had already had breakfast before they arrived at the hotel.
在到达旅馆之前,他们已经吃过了早饭。
She had finished writing the composition by 10:00 this morning.
今天早晨10点之前,她已经写完了作文。
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