过去完成时：用法与例句

（1）过去完成时表示在过去某一时间之前已经发生的动作或存在的状态。其结构是：had + 动词过去分词。否定、疑问句同现在完成时一样。

（2）用法

① 表示在过去某一时间或动作之前已经发生或完成的动作，即“过去的过去”。如：

The meeting had begun when we got there.

He said he had seen the film.

② 表示某一动作在过去某一时间已经开始，一直延续到过去的另一时间，常与for或since引导的时间状语连用。如：

The film had been on for tem minutes when we got there.

She said that she had made much progress since she came here.