题目内容

11．______，the conference began．（　　）
A．The candidates having taken their seats
B．The candidates had taken their seats
C．Taken their seats
D．Taking their seats

分析 候选人落座后，会议开始了．

解答 答案：A 考查独立主格结构． conference不能作take的逻辑主语，排除C、D项；B项是一个句子，但前后两个句子缺少连词，也应是排除，只有A项正确，candidates作现在分词短语having taken their seats的逻辑主语，从而构成独立主格结构．

点评 此类问题的解答，首先要弄清楚独立主格结构的构成，然后根据名词或代词与后面的形容词，副词，介词短语，分词，不定式等存在逻辑上的主谓关系选择正确答案．

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