题目内容：

only if 和 only 倒装区别
_____ will Mr.Forbes be able to regain control of the company.
a.Only with hard work
b.Only if he works hardly
为什麽b不对?

优质解答

only位于句首有三种状况会引起句子倒装1.only+副词 e.g.Only then did I realize the importance of study.2.only +介词短语本题就是这种状况3.Only +状语从句（主句倒装,从句不倒装）e.g.Only When I graduated fro...