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    精英家教网 > 高中英语 > 题目详情
    9．Chinese President Hu Jintao called for an immediate cease-fire in Libya _____ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan Province．（　　）
    A．to preventB．to have prevented
    C．preventingD．having prevented

    分析 在海南省举行的金砖国家峰会上，中国主席胡锦涛呼吁利比亚立刻停火以避免在这个的国家更糟糕的人道主义危机．

    解答 答案是A．本题考查动词不定式的用法．根据上下文的逻辑，停火的目的是"为了阻止"更糟糕的人道主义危机，只有动词不定式可以表示目的，所以排除C和D；B项是动词不定式的完成式，表示不定式的动作在谓语动词之前，很显然"prevent"的动作不在"call for"之前，所以排除B，答案选择A．

    点评 非谓语动词的选择，首先要根据句子的结构判断句中缺少的是谓语动词还是非谓语动词；如果是非谓语动词，在理解非谓语动词的基本用法的基础上再根据句子的结构做出判断．

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