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    精英家教网 > 高中英语 > 题目详情
    11．-Why not use the computers，Jack？
    -Our computers _____ by a virus，so the engineer disabled all of them．（　　）
    A．attackB．had attackedC．are attackedD．were attacked

    分析 --为什么不用电脑，杰克？
    --我们的电脑受到病毒的攻击，工程师把所有的电脑都停用了．

    解答 D 考查被动语态．分析题干可知句子的主语是our computers 与动词attack之间是被动关系，根据时态前后一致可知本句用一般过去时，所以答案选D．

    点评 被动语态由"助动词be+及物动词的过去分词"构成．被动语态的时态变化只改变be的形式，过去分词部分不变．疑问式和否定式的变化也如此．掌握各种时态的被动语态是解题的关键．

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