言简意赅一点。。。。语言稍微好懂一点。。最好是总结的最经典的注意点。。谢谢拉。
參考答案:过去完成时的谓语动词构成
I/ we/ you/ they had worked
he/ she/ it had worked
1.表示过去某一时刻之前已经完成的动作，常与由by，before引导的时间状语连用。
We had learned 5000 words by the end of last month.
到上个月底为止我已经学了五千个单词。
I had finished the composition before supper.
晚饭前我就已经把作文写完了。
2.表示过去某一动作之前已经完成的动作，常与由when，before等连词引导的时间状语从句连用。
When I woke up it had already stopped raining.
我醒来的时候雨就已经停了。
I hadn't learned any English before I came here.
我来这儿之前没学过英语。
常用于引导这类状语从句的连词有：when当...的时候，as soon as一...就，before在...之前，after在...之后，until直到，等。
3.用于宾语从句或间接引语中
I wondered who had taken the umbrella without permission.
我想知道谁不经允许就把雨伞拿去。
He told me that he had passed the exam.
他告诉我他已通过考试。
4.某些动词的过去完成时表示一个打算要做却没有做成的事。
I had intended to come over to see you last night, but someone called and I couldn't get away.
昨晚我本打算来看你，但有人来找，脱不开身。
We had hoped to catch the early bus, but found it was gone.
我们本希望搭早班车，却发现车已开了。
这类动词有：intend打算，hope希望，plan计划，mean预定，want想要，think想要，等。
5.用于表示与过去事实相反的虚拟条件从句中
If you had come yesterday, you would have met him.
如果你昨天来的话，你就已经见到他的面了。
She would have come if she hadn’t been so busy.
要不是这么忙的话，她就已经来了。