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過去完成時(shí) 

1、概念:

表示過去的過去。其構(gòu)成是had +過去分詞構(gòu)成。 那時(shí)以前  那時(shí) 現(xiàn)在        

2、用法 

a. 在told, said, knew, heard, thought等動(dòng)詞后的賓語從句。 She said (that) she had never been to Paris. 

b. 狀語從句 在過去不同時(shí)間發(fā)生的兩個(gè)動(dòng)作中,發(fā)生在先,用過去完成時(shí);發(fā)生在后,用一般過去時(shí)。 When the police arrived, the thieves had run away. 
c. 表示意向的動(dòng)詞,如hope, wish, expect, think, intend, mean, suppose等,用過去完成時(shí)表示"原本…,未能…" We had hoped that you would come, but you didn't.  

過去完成時(shí)的時(shí)間狀語before, by, until , when, after, once, as soon as。 

例句:He said that he had learned some English before. By the time he was twelve, Edison had began to make a living by himself. Tom was disappointed that most of the guests had left when he arrived at the party.   


典型例題  

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. "把書忘在辦公室"發(fā)生在"去取書"這一過去的動(dòng)作之前,因此"忘了書"這一動(dòng)作發(fā)生在過去的過去,用過去完成時(shí)。句中when表示的是時(shí)間的一點(diǎn),表示在"同學(xué)們正忙于……"這一背景下,when所引導(dǎo)的動(dòng)作發(fā)生。因此 前一句應(yīng)用過去進(jìn)行時(shí)。 
注意: had no … when     還沒等…… 就…… had no sooner… than  剛…… 就…… He had no sooner bought the car than he sold it.