Ann enjoys reading in the library (reading画线)对划线部分提问

问题描述:

Ann enjoys reading in the library (reading画线)对划线部分提问
为什么事what does ann enjoy doing in the library 而不是do in the library 不是does后动原吗.

对reading提问是对动名词提问,does后面的动词原形是enjoy enjoy后面接动词ing