During his stay here,he became friendly with Lady Amelia,the beautiful wife of Lord Burlesdon.They became very good frie

问题描述:

During his stay here,he became friendly with Lady Amelia,the beautiful wife of Lord Burlesdon.They became very good friends indeed,which,naturally,did not please Lord Burlesdon.这句话中which单独使用是什么用法,代指什么.

这里的which是定语从句的关系代词,指代前面整件事.
which并非单独使用,是因为有naturally这个副词的插入,所以被分开了.
完整的是which natrually did not please Lord Burlesdon.能详细解释一下which和naturally为什么和后面的句子分开吗?