题目内容
11.Johnny won't go to sleep _____ you tell him a story.Even the same one is Ok.( )A. | unless | B. | after | C. | when | D. | if |
分析 除非你给他讲个故事,否则Johnny(约翰尼)就不睡觉了,即便是同一个故事也可以.
解答 答案A.
unless在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用,引导条件状语从句;after"在…后",引导时间状语从句;when"当…时候",引导时间状语从句;if"如果",引导条件状语从句.分析可知前后两句话是逻辑上的条件关系,可排除B和C两项;再根据句子所表达的意思可知,D不正确,故答案选A.
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.本题尤其要注意区分unless和if的用法.unless在意义上相当于if…not,因此在有些场合中unless与if…not可互换使用.本题中可以把句子转化为"Johnny won't go to sleep if you don't tell him a story."
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