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    精英家教网 > 高中英语 > 题目详情
    6．Only when we have enough"input"_________ excellent"output"-speaking and writing in English．（　　）
    A．did we presentB．can we presentC．present weD．we can present

    分析 只有当我们拥有足够的知识输入才能在英语的说和写中表现得精彩．

    解答 答案：B．
    分析句子结构可知，本句的句式属于only+when引导的时间状语从句位于句首，所以后面的主句要使用部分倒装，可排除C和D；因为从句的时态为一般现在时，所以主句的时态也应该使用现在时的时态，可排除A．故选B．

    点评 对于倒装句式要熟练掌握几种基本的结构，灵活运用部分倒装和全部倒装的用法．

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