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题目
题型:不详难度:来源:
_____ is known to everybody that the moon travels round the earth.
A.ItB.AsC.WhenD.Where

答案
A
解析

试题分析:考察it作为形式主语。本句中的It是形式主语,真正的主语是后面的that the moon travels round the earth。这里的that只是一个引导词而已,不在句中充当任何成分。句意:众所周知的事情是月球绕着地球转。故A正确。
点评:形式主语,顾名思义,即形式上是主语,但实际上不是真正的主语,真正的主语是后面的动词不定式、动名词或主语从句等。如果让后面的动词不定式、动名词或主语从句用作主语,那么在句式上容易造成“头重脚轻”,句式不平衡,故往往用it作形式主语,而把真正的主语放在后面。it在这里没有任何意义。
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试题【_____ is known to everybody that the moon travels round the earth.A.ItB.AsC.When】;主要考察你对代词等知识点的理解。[详细]
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