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    精英家教网 > 高中英语 > 题目详情

     How can school ban mobile phones completely __________ some of the parents simply don’t follow the rule?

    A．unless            B．when             C．until             D．before

     

    【答案】

    B

    【解析】

    试题分析：句意：当一些家长不遵守规则的时候，学校怎么能完全禁止手机呢？when 表示“当…时候”，unless 表示除非，until表示直到…，before表示在…之前，故选B

    考点：连词

    点评：连词在高考中涉及到的很多，尤其在宾语从句、状语从句、定语从句中连词是必考点。平时学习过程中，掌握连词的意思，及所表示的关系是至关重要的，这种关系的判断可以通过句子意思的理解来选择恰到的连词。

     

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