题目内容
4.Some hard-working students always keep a torch in their dormitories _____ there is a power failure.( )A. | if | B. | unless | C. | so that | D. | in case |
分析 一些学习刻苦的学生通常在宿舍备一个手电筒以防停电.
解答 答案D.if如果,引导条件状语从句;unless 除非,引导条件状语从句;so that以便,结果,引导目的状语从句或结果状语从句;in case万一,引导条件状语从句.前后两句话之间的逻辑关系应该是条件关系,可排除C;再根据句子所表达的意思可排除A和B,故答案选D.
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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