找错：when do your father buy this car
问题描述：
找错：when do your father buy this car
答
正确的是When does your father buy this car?
do---does
答
do 改为did， 因为“你父亲买车”是过去式，已经买了，所以用did
答
do ----- did
when （ did ）your father buy this car?
你爸爸什么时候买的这辆车?
由题意可知,车已经买了,用一般过去式,借助于助动词 did 提问.
祝开心!