Of the two brothers,Bill is_younger one,and he is a quiet boy,_that most adults like very much.
问题描述：
Of the two brothers,Bill is_younger one,and he is a quiet boy,_that most adults like very much.
第二空为什么填one 不填the one?
答
one 和the one,前者是泛指,后者是特指
我是这么理解的：
这个句子是a quiet boy的同位语,因为a quiet boy 本身就是泛指而不是特指,所以对应的同位语要用one
假如这个句子是 he is the most quiet boy,后面就要用the one