UC知道：想知道神马，提问回答学习问题百度都知道

The professor could hardly find sufficient grounds( ) his arguments in favor of the new theory.

来源：百度知道编辑：UC知道时间：2024/05/24 11:37:32

A. to be based on B. to base on C. which to base on
D.on which to base
应该选择哪个？原因是什么？

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

B

base on,固定搭配，它的宾语是前面的sufficient grounds

d
定语从句 base on的介词提前
句意教授找不出支持他新理论的根据

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