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9.It is the knowledge from books as well as our life experiences __________us understand the world around us.(  )
A.which helpsB.which helpC.that helpD.that helps

分析 是书本上的知识和我们生活的经历帮助我们理解周围的世界.

解答 答案:D句中it is…that…构成对句子the knowledge from books as well as our life experiences helps us understand the world around us的主语进行强调,是一个强调句型;句子的主语是knowledge,不可数名词,谓语动词help要用三单形式,as well as连接的并列主语不影响句子的谓语.故选D.

点评 强调句型是特殊句式之一.构成方式是:it is+被强调部分+that/who+剩下部分.可以对主语,宾语,状语进行强调,强调时,只需把被强调部分放到it is后即可,其它部分不变.这也是判断强调句型的一种有效方法.

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