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精英家教網 > 高中英語 > 題目詳情

By the time you get to Beijing tomorrow, I ______ for Shanghai.

A.am leaving         B.should have left     C.will leave          D.will have left

 

【答案】

D

【解析】

試題分析:考查時態。本題的關鍵詞是by the time…到…時為止;該詞經常與完成時連用,如果后面是現在的時間,句中就使用現在完成時;如果后面是過去的時間,就使用過去完成時;如果后面是將來的時間,就使用將來完成時。本題by后面接的時候時間狀語從句,使用一般現在時代替將來時,后面的主句使用將來完成時。句意:到你明天到北京的時候,你已經出發去上海了。故D正確。

考點:考查時態

點評:by the time…到…時為止;該詞經常與完成時連用,如果后面是現在的時間,句中就使用現在完成時;如果后面是過去的時間,就使用過去完成時;如果后面是將來的時間,就使用將來完成時。

 

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