题目内容
17.We were half an hour late for dinner ______ we had taken the wrong bus.( )| A. | if | B. | while | C. | unless | D. | because |
分析 因为我们乘错了车,所以晚饭晚了半小时.
解答 答案:D
if如果,unless除非,引导条件状语从句;while与…同时,引导时间状语从句;because因为,引导原因状语从句;"我们乘错了车"与"晚饭迟到半小时"是因果关系,故选D.
点评 本题考查连词辨析,先弄清所给词的词义及用法,再根据情境选择正确答案.
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