By the end of last year．Steve computer science in a university for two years．( )A．studiesB．has studiedC．had studiedD．is studying 题目和参考答案——青夏教育精英家教网—

题目内容

14．By the end of last year．Steve computer science in a university for two years．（　　）

A．

studies

B．

has studied

C．

had studied

D．

is studying

分析在去年年底之前，史蒂夫在一所大学里已经学了两年计算机了．

解答答案：C．过去完成时的构成：had+过去分词，表示在过去某个时间或动作之前就已经完成的动作．在本题中last year是过去的时间状语，by the end of是一个固定短语，意思是"到…为止，"By the end of last year的意思就是"在去年底为止"，因此本题的时间状语就是截止到过去的某个时间之前发生的事情，所以要和过去完成时连用，故选C．

点评首先要掌握过去完成时的构成以及用法，然后结合具体的时间状语就可以确定正确答案．

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