初中英語時態知識點：過去完成時的構成

　　過去完成時

　　The Past Perfect Tense

　　過去完成時的構成

　　過去完成時由"助動詞had (通用于各種人稱和數)＋過去分詞"構成。主要表示過去某時前已發生的動作或情況（也可說是"過去的過去"）：

　　By the time I got there, it had already finished.

　　When I got to the check-out, I realized I had left my purse at home.

　　He said he had never seen such an exciting match before.

　　注：如果時間狀語從句的動作發生在前，則從句用過去完成時，主句用一般過去時。

　　When he had finished his work , he left his office .

　　After I had done my homework , I went to bed.

　　 陳述句

　　They had already had breakfast before they arrived at the hotel.

　　在他們到達旅館之前，他們已經吃早飯了。

　　從句中"arrived at"到達在"過去"的時間，而"had already had"吃早飯的動作發生在到達之前，因此主句的時態為"過去的過去"。

　　I had finished writing my composition by 10:00 this morning. 今天上午10：00點以前，我已經寫完了我的作文。

　　She had searched the internet for two hours when she found an ad for the Canon digital camera. 當她找到了佳能數碼照相機的廣告時，她已經在因特網上查詢了兩個小時。

　　I went over what I had written again and again so that I wouldn't make any mistakes. 我一遍又一遍地檢查了我所寫的內容，以至我沒有出現任何錯誤。

　　 否定句

　　He remembered he hadn't paid for it yet. 他記得他還沒有付賬。

　　He said that he had never seen such a beautiful bird before.

　　他說他以前從來沒有看過這樣美麗的鳥。

　　疑問句

　　How many English films had you seen by the end of last term?

　　到上學期期末為止，你們看了多少部英文片？

　　Had you reached the station before ten o'clock?

　　十點以前，你們已經到達火車站了嗎？
 

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