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12.-Why did you go back to the shop?
-I left my friend ____ there.(  )
A.waitingB.to waitC.waitedD.wait

分析 -你为什么回到店里?-我让朋友一直在那等着呢.

解答 答案:A 短语搭配,leave sb doing sth让某人一直做某事,表达进行;leave sb to do sth留下某人去做某事,表达未发生.句意表达等的动作在发生,故选A.

点评 现在分词是非谓语动词的一种,表达主动或进行;过去分词表达被动或完成;动词不定式表达未发生的动作.学习时,要注意区分和掌握.

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