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9.Millions of pounds'worth of damage ______ by a storm which swept across the north of England last night.(  )
A.has been causedB.had been caused
C.will be causedD.will have been caused

分析 昨天晚上席卷英格兰北部的暴风雨造成了数百万英镑的损失.

解答 答案是A. 考查被动语态,根据句意损失是由暴风雨引起的,damage与cause之间是被动关系,是从last night到现在"的结果,所以用现在完成时,故答案选A.

点评 被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.掌握各种时态的被动语态是解题的关键.

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