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 候選人落座后，會(huì)議開始了．

解答 答案：A 考查獨(dú)立主格結(jié)構(gòu)． conference不能作take的邏輯主語，排除C、D項(xiàng)；B項(xiàng)是一個(gè)句子，但前后兩個(gè)句子缺少連詞，也應(yīng)是排除，只有A項(xiàng)正確，candidates作現(xiàn)在分詞短語having taken their seats的邏輯主語，從而構(gòu)成獨(dú)立主格結(jié)構(gòu)．

點(diǎn)評(píng) 此類問題的解答，首先要弄清楚獨(dú)立主格結(jié)構(gòu)的構(gòu)成，然后根據(jù)名詞或代詞與后面的形容詞，副詞，介詞短語，分詞，不定式等存在邏輯上的主謂關(guān)系選擇正確答案．

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