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