I sleep with window openunlessit's really cold．题目和参考答案——青夏教育精英家教网——

题目内容

7．I sleep with window openunlessit's really cold．

分析如果天气不是很冷的话，我总开着窗户睡觉．

解答答案：unless
分析句意可知，此处引导的应是条件状语从句，表达了否定的意义，即：在天气不是很冷的情况下，我总开着窗户睡觉；故用unless

点评做本题时，需要了解从属连词unless引导条件状语从句，相当于if not的用法．

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