We cannot form a sound opinion without facts, for we need to have factual knowle

游客2024-09-25  10

问题 We cannot form a sound opinion without facts, for we need to have factual knowledge______our thinking.

选项 A、which to base upon
B、upon which to base
C、which to be based upon
D、to base upon which

答案 B

解析 非谓语动词题。由“介词+关系代词+不定式”构成的不定式短语可以用作后置定语,相当于定语从句。在正式文体中,当引导定语从句的关系代词用作介词的宾语时,有时可用“介词+关系代词+不定式”这样的结构来简化定语从句,该结构中的介词不能省略,并且该介词不能位于不定式的后面;但如果该结构语义清楚,且结构恰当,有时可省略其中的关系代词,而只保留介词和不定式,此时介词要移至不定式之后。原句中不定式正常的语序应是to base our thinking upon factual knowledge,其中用关系代词which指代了先行词factual knowledge,和介词upon一起被提到不定式之前,故选项[B]为答案。
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