She might have been exactly like that whether nothing had ha

whether 和if 表示是否时,在名词性从句的宾语从句中可以互换,eg 。She asked me if / whether I would help her with her English 。但这里不是名词性从句,而是条件状语从句,那么只能用If 来引导,意思是如果。所以 正确的句子就是She might have been exactly like that if nothing had happened。这里If 引动虚拟条件句。