帮我分析下这句话的语法吧,什么是主语,什么是宾语,好像还有个形式宾语吧?

题目

帮我分析下这句话的语法吧,什么是主语,什么是宾语,好像还有个形式宾语吧?
The best kind of friend is the one you could sit on a porch swing with,never say a word,and then walk away feeling like it was the best conversation you've ever had.

答案

主句是主系表结构.主语：The best kind of friend 系动词：is 表语：the one
you到句末是定语从句.
定语从句的主语是you 定语从句中有三个并列谓语：could sit,say,walk
句中没有形式宾语