题目内容
1.How time flies!Three years _________( )| A. | have passed | B. | has passed | C. | is passed | D. | are past |
分析 时间真快啊,三年过去了.
解答 答案:B.主语是Three years时间,作为一个整体,谓语要用单数形式,故排除AD两项.结合句意,Three years与谓语pass是主动关系,故排除C项.故选B.
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.
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