题目内容

12.If it           for his invitation the other day,I should not be here now.(  )
A.had not beenB.should not be
C.were not to beD.should not have been

分析 如果前些日子没有同意他的邀请,现在我就不会在这里了.

解答 答案:A
根据句意可知,该句是错综时间虚拟条件句.主句"I should not be here now."表达的是与现在事实相反的情况;意为:现在我就不会在这里了;而根据if从句中表示过去的时间状语"the other day前些日子"可知,此处表达的应该是与过去事实相反的情况,所以要使用过去完成时;故选A

点评 本题考查的是错综时间虚拟条件句.做此类题时,首先需要熟练掌握错综时间虚拟条件句的定义及用法:通常条件从句与主句所指的时间不一致,所以它们所使用的时态各不相同;如本题从句指与过去事实相反的情况,需要用过去完成时;而主句指的是与现在事实相反的情况,因此使用了would+动词原形的形式;有时还应根据具体的语境情况对时态作相应的调整.

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