I asked the price of the car,but they had already sold it

问题描述:

I asked the price of the car,but they had already sold it
这只是过去完成时 不是状语从句吧
没有时间状语啊

这是一个并列句,asked表示过去的动作,而sell是ask之前的动作,所以要用过去的过去,即过去完成时