|
附:过去完成时 过去完成时主要用于表示两个事件 一个发生在前,或者说是表示较早的过去。在时间上,是过去的过去 结构为 助动词had + 过去分词 用法: 1. 过去完成时表示在过去某一时间或动作之前已经完成了的动作,这个过去的时间可以用by,before等介词短语或一个时间状语从句来表示。 We had seen five films by the end of last term. 到上学期期末为止,我们已经看了5部电影。 She went on holiday after she had taken the exam. 她考完试后度假去了。 When we hadfinished the work we had a rest. 我们工作完以后,休息了一会儿。 2.过去完成时还可以表示从过去某一时间开始,一直持续到过去另一时间的动作。常与for(有时可以省去), 或since 构成的短语或since引导的从句连用。 By the time I read his new book,I had known him for a long time. 到我读他的新书时,我早就知道他了。 He had visited many friends since his arrived. 他到了以后拜访了许多朋友。 She had made many firends since she came to his school. 她到了这所学校以后,交了很多朋友。 |