c. 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。例如:
We had hoped that you would come, but you didnt. 那时我们希望你能来,但是你没有来。
3) 过去完成时的时间状语before, by, until , when, after, once, as soonas。例如:
He said that he had learned some English before. 他说过他以前学过一些英语。
By the time he was twelve, Edison had began to make a living by himself. 到了十二岁那年,爱迪生开始自己谋生。
Tom was disappointed that most of the guests had left when he arrived at the party.
汤姆失望了,因为他到达晚会时,大部分客人已经走了。
典型例题
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B,were writing, has left C. had written, had left D. were writing, had left
答案D.
把书忘在办公室发生在去取书这一过去的动作之前,因此忘了书这一动作发生在过去的过去,用过去完成时。句中when表示的是时间的一点,表示在同学们正忙于这一背景下,when所引导的动作发生。因此前一句应用过去进行时。
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