题目内容
6.There was a helicopter ______ across the sky when we were having a P.E.class.( )A. | fly | B. | to fly | C. | flown | D. | flying |
分析 当我们上体育课时,有一架直升机飞过天空.
解答 答案:D 考查现在分词.a helicopter与fly之间是主谓关系,用现在分词短语flying across the sky作定语修饰helicopter.故D项正确.A项:动词原形;B项:动词不定式;C项:过去分词.
点评 非谓语动词中的现在分词主要起形容词和副词的作用,在句中作定语、表语、补语或状语,弄清楚现在分词的构成,时态与语态,然后根据题意及上下文选择最合适的答案.
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