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    精英家教网 > 高中英语 > 题目详情

    Having lost his key，________.

    A．he couldn’t enter the room B．the gatekeeper offered to help
    C．the door was forced open D．the room couldn’t be entered

    A

    解析试题分析：考查句子结构：逗号前面是现在分词的完成式做状语，说明句子的主语应该是lost his keys的逻辑主语，应该是he，句意：丢了钥匙后，他不能进入房间。选A。
    考点：考查句子结构
    点评：用非谓语动词做状语，说明主从句的主语一致的时候，做题时可以在四个选项中找非谓语动词的逻辑主语，往往逻辑主语对了，答案就自然出现了。

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