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19.Some of you may have finished Unit One.________,you can go on to Unit Two.(  )
A.If you mayB.If you doC.If notD.If so

分析 你们中有些人已经完成第一单元.如果是这样,你们可以继续第二单元.

解答 答案是D.本题考查状语从句的省略句和替代.if  so如果是这样,用so 代替上文的一件事;其否定形式是if not如果不是;英语中省略往往是为了避免重复的省略;if you may往往用于省略与上文相同的实意动词,表示"如果你可以做…";if you do表示"如果你…",其中do 代替上文出现的动词一避免重复;本题用so代替上文的"you have finished Unite One"这件事,故答案选择D.

点评 本题考查省略,省略常常是为了避免重复的省略,所以要在补全被省略的部分的情况下整体理解语境,再做判断.此外很多省略的结构已经成为固定结构,要积累.

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