高中士兵考军校-语法总结（42）

　　比较: He has a sister, who is a musician.

　　He has a sister who is a musician.

　　引导非限制性定语从句的关系代词，指人时用who, whom, whose , 指物时用which , whose; 关系副词when，where, why, etc.

　　1. He studied hard at school when he was young, which leads to his success in his later life.

　　2. Tom's father, who arrived just now, is a famous scientist.

　　3. They set up a separate state of their own, where they would be free to keep Negroes as slaves.

　　4. He was proud, which his brother never was.