题目内容
20.I was ready to go to bed my mother came back.( )| A. | when | B. | as | C. | while | D. | after |
分析 当我妈妈回来的时候,我准备上床睡觉了.
解答 答案:A.考查连词.句意"当我妈妈回来的时候,我准备上床睡觉了.".when当…的时候,可以和延续性或非延续性动词连用.while和as只能和延续性动词连用.come是非延续性动词,因此B,C不正确.after引导时间状语从句时表示主句的动作发生在从句动作之后,结合语境主从句不是先后发生的,因此D不正确.答案是A.
点评 连词可以表并列、承接、转折、因果、选择、假设、比较、让步等关系,要结合语境,选择合适连词用法.
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