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12.The speed of the trains nowadays is_________________what it was in the past.(  )
A.two times as faster asB.two times as the speed as
C.two times faster thanD.as fast as two times

分析 现在火车的速度比过去快两倍.

解答 答案是C.本题考查倍数的表达.英语中常见的倍数表达有下列几种:1)x times+比较级+than  2)x times+as+原级+as; 3)x times the+抽象名词+of; 4)x times+what从句; x times+that短语;本题选用句型1),答案是C.

点评 掌握倍数表达的不同结构,分析题干中句子的结构特征,结合语境中选用恰当的结构.

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