摘要：① with the size of the whole earth, the biggest ocean does not seem big at all. A. Compare B.when comparing paring D.When compared 解析:本题考查现在分词作时间状语的用法.实际上这是一个时间状语从句.它的完全形式应为“when the biggest ocean is compared with the size of the whole earth .而在when/if等引导的时间/条件状语从句中.如主句与从句的主语一致.从句的主语及其后的be动词均可省略.故选D项.该考点在2005福建卷和2007四川卷中再次考到: ②When help, one often says “Thank you. or “It’s kind of you. A．offering B．to offer C．to be offered D.offered 解析:offer的逻辑主语是one.是别人主动给one提供帮助.所以应用过去分词. ③The flowers his friend gave him will die unless every day. A.watered B. watering C. water D.to water 解析:主语是flowers,故用过去分词watered表示被动=unless they are watered.

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