题目内容
6.With his attention ________ on his book,he didn't notice someone entering his room.( )A. | concentrating | B. | concentrated | C. | to concentrate | D. | concentrates |
分析 注意力集中在书上,他没有注意到有人进入他的房间.
解答 答案是B.本题考with的复合结构.with的复合结构是"with+sb./sth.+宾语补足语",谓语动词不能充当宾语补足语,故排除D;复合结构中非谓语动词做宾语补足语时,分词的选择是看分词和宾语之间的关系:分词和宾语之间是主谓关系(主动关系)、表示进行,用现在分词;分词和宾语之间是动宾关系(被动关系)、表示完成,用过去分词;动词不定式做宾语补足语时表示动作将要发生.本题中attention和concentrte之间是被动关系,所以选用过去分词,答案选择B.
点评 首先判断选项中的动词在句中是以谓语还是非谓语形式出现,然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断.
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