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11.Do you know when basketball     ?(  )
A.is inventedB.was inventedC.has inventedD.had invented

分析 你知道篮球是什么时候发明的吗?

解答 答案:B.
首先根据语境推测句意是"你知道篮球是什么时候发明的吗?",由于句子表述的是发生在过去的事情,判断句子中的谓语动词用一般过去时,主语  basketball 是动作invent 的承受者,所以用被动语态,一般过去时被动语态的构成是:主语+was/were+动词的过去分词,故选B.

点评 本题考查时态和语态.每个时态都有标志词,熟记这些标志词是做题的关键.在没有时间状语的情况下可以根据语境来对时态做出判断.判断语态的关键则是观察主语是谓语动词的执行者还是承受者.

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