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    精英家教网 > 高中英语 > 题目详情
    9．While __________ the bridge，the workers contributed a lot．（　　）
    A．constructedB．constructing
    C．were constructingD．construction

    分析 在修建这座桥时，工人们贡献很多．

    解答 答案：B 考查现在分词．the workers与construct之间是主谓关系，用现在分词短语作状语，相当于while they were constructing the bridge．

    点评 考查现在分词，要弄清楚分词与逻辑主语之间是主动关系还是被动关系，分词所表示的动作与谓语动词所表示的动作的先后关系，然后，根据句意选择最符合题意的选项．

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