题目内容
1.-Mum,a bird flew in _________ I opened the window.-Really?Keep the window open and it will fly out later.( )
| A. | before | B. | until | C. | if | D. | as |
分析 -妈妈,当我打开窗户时,一个小鸟飞进来了.-真的吗?把窗户打开,一会它就会飞出去.
解答 正确答案:D.before是在…之前,until是直到,not…until…表示直到…才…,if是如果,引导条件状语从句,as可引导时间状语从句,表示当…时,也可引导原因状语从句,表示因为.根据句意可知当说话人打开窗户时,一只小鸟飞了进来,故选择D.
点评 本题考查连词辨析,基础题,熟悉常用连词的用法,再根据题干即可作出选择.
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