Question

一道高二英语选择题，为什么选D

the professor could harldy find sufficient grounds_____his arguments infavor of the new theory
A.to be based on B. to base on
C.which to base on D.on which to base
不能使A吗

Answer 1

选D
base on固定搭配：基于；以。。。为根据
to base his arguments on sufficient grounds
sufficient grounds 先行词提前，on which引导状语从句

PS：理论上来说如果把C的句子改成the professor could hardly find the sufficient grounds which to base his gruments infavour of the new theory on也是可以的。

Answer 2

B 不定式的逻辑主语还是 the professor 不能用被动

Answer 3

to be based on是被动语态，而此句是主动语态，是说要此句意思是说教育很难找到足够的理由立足自己的论点来赞成这个新理论。

Answer 4

D. The professor could harldy find sufficient grounds on which to base his arguments infavor of the new theory.
教授几乎找不到足够的根据来支持他的那些赞成新理论的论点。

Answer 5

那个教授很难找到充足的根据来做支持这个新理论参数的基础。基本语序为 base his arguments on sufficient grounds。本题考查：介词+关系代词+不定式的用法。例如：
1. He has only 68 dollars with wich to buy her husband a suit.
2.The youg man wants to start a shop of his own in which to produce toys of all kinds.