( 1 )宾语从句中
当宾语从句的主句为一般过去时,且从句的动作先于主句的动作时,从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如:
She said that she had seen the film before.
( 2 )状语从句中
在时间、条件、原因、方式等状语从句中,主、从句的动作发生有先后关系,动作在前的,要用过去完成时,动作在后的要用一般过去时。如:
When I got to the station, the train had already left.
After he had finished his homework, he went to bed.
注意: before, after 引导的时间状语从句中,由于 before 和 after 本身已表达了动作的先后关系,若主、从句表示的动作紧密相连,则主、从句都用一般过去时。如:
Where did you study before you came here?
After he closed the door, he left the classroom.
(3)表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示原本,未能
We had hoped that you would come, but you didnt.
3. 根据上、下文来判定。
I met Wang Tao in the street yesterday. We hadnt seen each other since he went to Beijing.
三、过去完成时的主要用法
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