The professor could hardly find suffient grounds _______ his

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/04/19 19:56:13

The professor could hardly find suffient grounds _______ his arguments in favor of the new theory.
A.to be based on B.to base on C.which to base on D.on which to base
为什么C选项不行?我咋觉得C D可以替换
回答时尽量详细
要解释另三个选项为啥不行
就这么多了.
thank you~

短语base sth on sth,or be based on
A没有引导词,句子结构混乱；
B同A,并且没有宾语的情况下,应该用被动形式
C、D答案按常规可以互换,不过就句子侧重点,并且不定式与特殊疑问词或关系代词连用时,习惯上如果有介词,总是把介词用于引导词之前.不能拆的短语除外：如look fo

The professor could hardly find suffient grounds _______ his The professor could hardly find sufficient grounds( ) his ar The professor could hardly find sufficient grounds __his arg 1.The professor could hardly find sufficient grounds ______ 英语翻译1,The professor could hardly find sufficient grounds on The professor could hardly find sufficient grounds on which The professor could hardly find sufficient grounds _____his 一》The professor could hardly find sufficient grounds ____ hi The professor can hardly find sufficient grounds （）his argum the professor can hardly find sufficient grounds on which to The professor could hardil find sufficient grounds ___ The professor could hardly find necessary grounds_______his