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20.The Chinese people are kind and caring.If not,I _____ in China in the past 30years.(  )
A.didn't stayB.hadn't stayed
C.couldn't stayD.couldn't have stayed

分析 中国人民善良有爱心.如果不是这样,在过去的30年我不可能呆在中国.

解答 答案是D.本题考查虚拟语气;题干中If not完整的表达是"If the Chinese people were not kind and caring",是与现在事实相反的虚拟条件,主句中的"in the past 30 years"说明的是与过去事实相反的结果;与过去事实相反的结果主句中动词用"would/should/could/might+have done",故选D.

点评 在掌握虚拟语气的规则的基础上,判断题干属于什么类型的虚拟,然后根据语境,选用恰当的动词形式表达虚拟.

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