题目内容
9.By the late 1960s,their style of music _____ completely.( )A. | changed | B. | have changed | C. | had changed | D. | was changed |
分析 截止到二十世纪六十年代末,他们的音乐风格完全改变了.
解答 答案:C
根据句中的时间状语By the late 1960s可知,此处表示发生在过去(即二十世纪六十年代末)之前的动作,应使用过去完成时;故选C.
点评 本题考查了过去完成时(had+done)的用法;首先应根据句中的时间状语,判断出此处应使用的时态;其次应了解过去完成时表示的是发生在过去之前的动作;最后应熟练掌握各时态的意义及用法区别.

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