12.While________ along the road,Mr.Smith met an old friend of his.(  )
A.walkedB.he is walkingC.walkingD.is walking

分析 當(dāng)史密斯先生沿著馬路散步時(shí)遇到了他的一位老朋友.

解答 答案:C 句中while連接時(shí)間狀語(yǔ)從句;從句中省略了相同的主語(yǔ)和系動(dòng)詞,即while he was walking along the road;故選C.

點(diǎn)評(píng) 省略句是英語(yǔ)的一種習(xí)慣用法.按照語(yǔ)法的分析,句子應(yīng)該具備的成分,有時(shí)出于修辭上的需要,為了避免重復(fù)、突出新信息使上下文緊密連接的修辭手段.單詞,短語(yǔ),分句,都可以省略.

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