问题: On为什么提前?
18.The professor could hardly find sufficient grounds_____his arguments in favor of the new theory.
A.on which to base B.which to base on C.to base on D.to be based on
答案给的A,On为什么提前?不选B?能不能选C?不定式做后置定语,为什么?
解答:
我想这个可不可以这样理解:base sth. on sth.这个词组的意思应该是"把...建立在...基础之上,某事物以另一事物为根据依据"这个句子可以分解为: The professor could hardly find sufficient grounds to base his argument in favor of the new theory on (sufficient grounds).用 which 指代suffficient grounds 那么介词on 就要放在 which前面.
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