The professor could hardly find sufficient grounds __his arguments in favour of the new theory

这里为什么只能填 on which to base 而不能用to base on?

是不是只有使役动词才能接不定式做补语???

不是 只是使役动词接不定式to是省略的
其实这句话就是base his arguments on the grounds,如果说base on his argument 意思就反了 如果一定用不定式只能说to base his argument
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第1个回答  2012-08-11
The professor could hardly find sufficient grounds which is based on his arguments in favour of the new theory 可以转换The professor could hardly find sufficient grounds on which to base his arguments in favour of the new theory 疑问词 to do 形式
不是只有使役动词才能接不定式做补语i want him to see you本回答被网友采纳
第2个回答  2012-08-11
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 B base on,固定搭配,它的宾语是前面的sufficient grounds