she behaved as if she had been the boss
看到一个例句：she behaved as if she were the boss,
那么问题来了,as if 引导的为方式状语从句的虚拟语气,前边为 she behaved 为过去式,as if 不是得虚过去,用过去的过去吗?那是不是就得跟题目似的用法?例句有错吗?