高考英語語法摘抄

　　高考英語語法精要講解二十四：過去完成時

　　1、過去發生的兩個動作，先發生的用過去完成時

　　With their help I realized that I had been wrong.

　　2、過去某時以前發生的動作或情況

　　He hasn’t finished yet.

　　He didn’t finish yesterday evening.

　　He hadn’t finished by yesterday evening.

　　3、常用過去完成時的.情況

　　①No sooner…than…. Hardly…when…

　　No sooner had he begun his speech than he was interrupted

　　②expect, hope, think, want, suppose等動詞的過去完成時（或一般時）表示想做而未做的事

　　I had planned to send him a telegram, but I didn’t manage it.

　　4、使用過去完成時的必要性和非必要性

　　①句意十分清楚時，可用一般時

　　After I finished, I went home.

　　②常用一般過去時表示依次發生的動作

　　I got out of the taxi, paid the fare（車費) and managed it.

　　③有時必須明確，特別是含when時

　　When I arrived, Ann left.

　　(同時見到）（見到Ann)

　　When I arrived, Ann had left.

　　（先后發生）（沒見到）

　　5、常用過去完成時的時間主狀語

　　by the end of +過去時間 ； by + 過去時間

　　by the time + 過去時間；過去時間 + before

　　比較：

　　By the time he was 11, he had learned 3000 words .

　　By the time he is 11, he will have learned 3000 words.

　　By the time last week, I had learned 3000 words.

　　By the time next week, I will have learned 3000 words

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