题目内容

18.Measures must be taken to prevent pollution ________ happily.(  )
A.from we liveB.for us to liveC.us livingD.from our living

分析 必须采取措施阻止污染以便我们能幸福地生活.

解答 答案是B.本题考查动词不定式充当目的状语;题干中prevent pollution的"目的"是为了幸福生活,故用动词不定式的复合结构"for sb.to do sth."表示目的,答案选择B.本题容易误看成短语prevent sb.(from) doing(阻止某人做…),而选择C和D,C和D语义不符;

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.要关注常见非谓语动词的搭配.

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