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现在完成时和过去完成时应与哪些词连用

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现在完成时和过去完成时应与哪些词连用
要区分二者的含义:现在完成时表示现在的状态以及持续了一段时间的行为,如:1.I have finished my work.2.He has already seen the film.3.We have learned English for a long time.过去完成时表示过去的两个行为中,先发生的那个行为,即:过去之过去.如:I went to bed after I had finished my work last night.2.The teacher had taught us some words before he asked us to read them.