you study harder.you'll never pass the final exam．( )A．IfB．UnlessC．UntilD．when 题目和参考答案——青夏教育精英家教网——

题目内容

8．_______ you study harder，you'll never pass the final exam．（　　）

A．

If

B．

Unless

C．

Until

D．

when

分析除非你更加努力学习，否则你永远不会通过考试．

解答答案B．
if"如果"，引导条件状语从句；unless等于if…not，"除非，如果不"，引导条件状语从句；until"直到"，引导时间状语从句；when"当…时候"，引导时间状语从句．通过分析主从句之间的逻辑关系可知应该选择引导条件状语从句的从属连词if或unless，再根据句子所表达的含义可排除if，因此答案是unless，故选择B．

点评本题考查从属连词的用法．连词的用法辨析，要注意分析主从句之间的关系，再确定相应的连词，同时注意不同的连词的语义及用法区别．

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