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    精英家教网 > 高中英语 > 题目详情
    _____ is necessary for us to tell him about the result.
    A．ThatB．ThisC．ItD．What
    C

    试题分析：考查it用法。本题的It是形式主语，真正的主语是后面的不定式to tell him about the result.句意：对我们来说，告诉他结果是必要的。故C正确。
    点评：在英语中it可以指时间，地点，度量衡等，也可以做形式主语，形式宾语，或者引导强调句型。也可以指代前面提及的同一个人或者事情。要特别模糊it的用法。
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