(过去完成时）他告诉我他们之间有过一场辩论.
He told me that there had been an argument between them
当时天已亮了,于是他撒下了第四网,也是最后一网.（过去完成时）
Day had now broken,and he cast his net for the fourth and last time
表示过去的过去
其构成是had +过去分词构成.
过去完成时的用法（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.
过去完成时的用法（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.
过去完成时的用法（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.
过去完成时的用法（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.
过去完成时的用法（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.