题目内容：

The only person I know who has a skeleton in the cupboard is George Carlton,and he is very proud
你说I know相当于插入语,插入语不都是用逗号隔开吗

优质解答

不是插入语,I know 和who has a skeleton in the cupboard 都是定语从句
我所认识的唯一的在柜中藏骷髅的人便是乔治•卡尔顿,他甚至引以为自豪.

追问：

为什么who放在know后

追答：

who和know没关系，分属两个定语从句，前面省略了that The only person that I know who has a skeleton in