I’m reading a new book these days ,_____ in English.

题目

I’m reading a new book these days ,_____ in English.
答案是one,可是one不是表泛指的吗,这里应该是特指前面的a new book吧,为什么不用the one?

答案

I’m reading a new book these days , _____ in English
正确答案是one.
因为【用in English来作定语特指是属于“第一次”出现】.one不是特指前面的a new book,是a new book的【同位语】.