which books did you buy?您买的是两本什么书?可不可以这样说：what did you bough

显然错了嘛
did 后面跟动词原形啊,楼上不要误人子弟
再者,what打头问的就是“什么”比如what did you buy?你买了什么?你明明知道他买的是书你还问什么呢?
我觉得which books did you buy?的意思是你买的是哪两本书?
what books did you buy?才是你买的是什么书?