The only person I know who has a skeleton in the cupboard is George Carlton,and he is very proud

题目

The only person I know who has a skeleton in the cupboard is George Carlton,and he is very proud
of the fact.这句话中who关系代词为什么放在know后面,应该放在person后面的/

答案

I know 是一个插入语,插入语在句子中的位置是比较灵活的,跟在person后面也完全没有错,大概是因为定语从句比较长,如果放在I know前面,会显得这个I know修饰哪个不太明确.
你也可以把I know 看成是另一个定语从句,同时修饰person