关于base on的用法The Professor could hardly find sufficient grounds__h_英语解答

关于base on的用法
The Professor could hardly find sufficient grounds__his arguments in favor of the new theory.
A. to be based on
B. which to base on
C.to base on
D on which to base
选哪个,请一定要说明为什么啊!~

人气：162 ℃　时间：2020-04-20 04:07:50

解答

选D...which指代ground...
前面的介词on必须有,因为这里相当于用了base on the ground这个短语..在定语从句中当用which指代了ground, ground前面的on还是应该存在.但这时候自然要加在 which前面,所以变成了on which to base