题目内容
18.In some cities,something _____to stop the sale of live poultry(活禽) during the past weeks.( )| A. | will do | B. | have done | C. | will be done | D. | has been done |
分析 在一些城市,在过去的一周中已经采取了一些措施在阻止活禽销售了.
解答 答案:D.
根据 during the past weeks,在过去的一周中,during引导的时间短语一般用于现在完成时中,表示从过去某个时间开始,一直持续到现在,在这里主语是something是动作do的承受者,故用被动语态,现在完成时的被动语态结构为have/has been 动词过去分词.故选D.
点评 英语中的时态主要是借助于时间状语与上下文语境来进行判断.解答此类题型,首先要注意句子中的时间状语,如果没有则要通过分析上下文,结合语境来判断句子的时态.语态的判断主要是确定句子主语与谓语动词的关系.如果是主动关系则用主动语态,反之如果是动宾关系,则用被动语态,尤其要注意一些特殊动词的用法.
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