题目内容
7.________,the damage would be incalculable.( )A. | Should such a disaster occur | |
B. | If such a disaster had occurred | |
C. | Had such a disaster occurred | |
D. | If such a disaster should be occurred |
分析 如果发生像这样的一场灾难的话,其损失将会是难以计算的.
解答 答案:A.
分析句子的结构可知,这是一个表达对现在事实假设的句型,当if引导的虚拟条件句中含有should时,可构成虚拟语气中的倒装,即把if省略,将should提前,B、C项是对过去事实的假设,可排除,D项中的occur不能用于被动结构.故选A.
点评 当虚拟条件句的谓语动词含有were,should,had时,可以将if省略,从句用倒装语序,即把were,should,had提前.解此题时需先认清此句是if省略的倒装情况,再根据从句的谓语动词形式确定动词的适当形式.
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