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    精英家教网 > 高中英语 > 题目详情
    A good teacher must be able to hold his students’ attention ____ he reaches the end of the class.
    A．whenB．afterC．untilD．unless
    C

    试题分析：考查连词辨析。A当…时；B在…后；C直到…才；D除非；句意：好的老师一定能够吸引教师的注意力，直到这节课结束。本句中前面句子的谓语动词hold his students’ attention是一个延续性动词，如果是短暂性动词，则使用not…until…；故C正确。
    点评：此题主要考查连词的辨析，选择连词主要是看前后句的关系，因果关系用表因果的连词，转折关系用转折连词，并列关系用并列连词，要求考生具有一定的句子分析能力和词义辨析能力。
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