rather than continue the argument,he walked away. rather than continue。 大家看到没有,这里有动词,这也就是一个句子,不是继续争论,他走开了。he walked away。 这是主句。所以rather than是连词。再看rather than作介词的用法。介词后头一定要跟名词,所以我们说,rather than being pleased,she was angry。
on vacation,用in的时候用in somebody's vacation.