16．When Rose opened the door，he saw a man standing there whom she______ before．（　　）
A．never sawB．had never seenC．never seesD．has never seen

分析 當Rose打開門時，她看見了一個以前她從沒見過的男人站在那兒．

解答 答案：B
根據(jù)"he saw a man standing there"使用了一般過去時可知，此處"從沒見過"是發(fā)生在過去（她看見在那兒站著一個男人）之前的動作，應(yīng)使用過去完成時，故選B．

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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