Without facts we can't form a correct opinion.for we need to have actual knowledge our thinking．( )A．which to be based onB．on which to baseC．which to base onD．on which to be based 题目和参考答案——青夏教育精英家教网——

题目内容

12．Without facts we can't form a correct opinion，for we need to have actual knowledge our thinking．（　　）

	A．	which to be based on		B．	on which to base
	C．	which to base on		D．	on which to be based

分析没有事实我们无法形成正确的观点，因为我们需要实际知识作为我们思考的基础．

解答答案是B．本题考查非谓语动词；当定语从句的主语和主句的主语一致时，可以省略从句中的部分内容．本题中定语从句完整的表达为"we are to base our thinking on actual knowledge"，将先行词用关系词which 代替，介词提前，省略从句中与主句相同的主语和be动词，故答案是B．

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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