摘要: 过去完成时 (1) 构成:助动词 had + 动词的过去分词 (2) 过去完成时表示在过去某时或某个动作之前发生的动作或存在的状态.如:The film had begun when we got to the cinema. (3) 过去完成时表示过去某一时间以前开始一直持续到那个时间并可能延续下去的动作.常和by.since .for引导的表时间的从句或短语连用.如:The train had been away for two minutes by the time they arrived.

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