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    精英家教网 > 高中英语 > 题目详情
    15．The new online library makes        possible for students to choose books by smart phone off campus．（　　）
    A．itB．oneC．thatD．this

    分析 新的网上图书馆使学生离开校园通过智能手机选择图书成为可能．

    解答 答案选A．
    这里使用了句型"make it+adj．+for sb．to do sth．"，意思是"做…事情对某人来说是…"，这里的it是形式宾语，to choose books by smart phone off campus是真正的宾语，其他三个选项都不能做形式宾语，故选A

    点评 it在句中可以做形式主语或形式宾语，真正的主语或宾语通常为动词不定式或that从句或动名词．
    例如：It is not right to use these places as rubbish dumps．把这些地方用来倒垃圾是不对的．（it用作形式主语，真正的主语为动词不定式）
          It was clear that they had no desire for peace．很清楚他们没有和平的诚意．（it用作形式主语，真正的主语为that从句）
          Do you consider it any good trying again？你觉得再试会有好处吗？（it用作形式宾语，真正的宾语为动名词）

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