这几句话重在定语从句的应用和翻译.
The name of the person（ being introduced定语） is mentioned last,正在被介绍的那个人的名字是最后被提及的.
and the person （to whom the introduction is made定语从句） is mentioned first.这个介绍所针对的那个人是首先被提到的.
The rules（ for who is introduced to whom定语从句 ）depends on （whether it's a business or a social introduction宾语从句）.
把谁介绍给谁取决于是商务性的还是社交性的引荐.