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12.---When did Peter come?
---________ I was talking on the phone,he came in.(  )
A.AfterB.WhileC.UntilD.Before

分析 --Peter什么時候來的?
--當我在打電話的時候,他進來了.

解答 答案:B;
根據設空處的句子用了過去進行時,可以推斷本句的句意是"當我在打電話的時候,他進來了.",表示主句的動作發生在在從句動作持續進行的過程中,所以用while引導該時間狀語從句,while"當…時",通常與延續性動詞連用,且用于進行時中,故選B.

點評 本題主要考查連詞的用法,連詞在句子中主要起聯系上下文的作用,他們之間的區別就是表示邏輯關系的不同,所以在解題時先要理解上下文含義,然后根據上下文邏輯關系選擇合適的連詞.連詞的用法都比較多,語義之間還有交叉,熟記其基本應用規則,了解其區別,注意固定搭配對象,是做好此類題型的關鍵.

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