18.He kept looking at her,wondering whether he        her somewhere.( 。
A.sawB.has seenC.seesD.had seen

分析 他不停地看著她,不知道自己是否在什么地方見過她.

解答 答案:D
根據(jù)"He kept looking at her"使用了一般過去時可知,此處的"見過她"是發(fā)生在過去"他不停地看著她"之前的動作,應(yīng)使用過去完成時;故選D.

點評 本題考查了過去完成時(had+done)的用法;首先應(yīng)根據(jù)句中已知的時態(tài)以及句意,判斷出此處動作發(fā)生的時間;其次應(yīng)了解過去完成時表示的是發(fā)生在過去之前的動作;最后應(yīng)熟練掌握各時態(tài)的意義及用法區(qū)別.

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