题目内容
20.Up to now the price of these shoeshasbeenreduced (reduce).分析 目前为止,这些鞋的价格已经降低了.
解答 答案:has been reduced
分析句意可知,此处在句中作谓语;主语the price of these shoes(这些鞋的价格)与动词reduce构成的是被动关系,故此处应使用被动语态;根据句中的时间状语"Up to now(至今,到目前为止)"可知,本句应使用现在完成时态的被动语态;故答案为:has been reduced.
点评 本题考查了现在完成时态的被动语态(have/has+been+done);做本题的关键在于两点:一是根据句意判断出本句的语态以及根据时间状语判断出句子应使用的时态;二是应熟练掌握现在完成时态的被动语态的意义及用法.

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