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14.Language experts claim that children _________ to the English-speaking environment will pick up English quickly.(  )
A.being exposedB.having been exposed
C.to be exposedD.exposed

分析 语言专家宣称身处英语语言环境中的儿童会在不知不觉中快速学会英语.

解答 答案:D 句中expose作children的后置定语;expose sb to sth让自己暴露在某物下,句中expose与children构成动宾关系,且句意表达的是客观事实,要用表示被动的过去分词.故选D.

点评 过去分词是非谓语动词的一种,用法很灵活,分为简单式done(表示与谓语同时或几乎同时发生的动作);完成式having been done(表示先于谓语的动作).学习时,要把握其用法特征:表示被动和完成.同时还要注意区分现在分词和不定式.

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