题目内容
2.I usually sleep with the window open _____ it's really cold.( )| A. | if | B. | because | C. | so | D. | unless |
分析 我通常开着窗睡觉,除非天气真的很冷.
解答 答案:D.
本题考查的是从属连词的辨析.根据题意,从前半句"我通常开着窗睡觉"和后半句"天气真的很冷"来看,这里需要一个表假设的连词,结合选项,unless可以引导一个表假设的条件状语从句,意为"除非",相当于if not.故选D.
点评 比较和分析选项中连词的不用含义及其用法是解答该题的关键;还要根据句中信息正确推测该句句意,进而作出解答.
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