who 表明先行词是人(一般在从句中充当主语) The boy who plays computer well is waitting for you. which 表明先行词是物(也指事)在限定性定语从句中=that,在非限定性定语从句中只能which This is the hotel which/that you will stay in. Tom is late for class,which makes his mum very angry. Beijing,which ia the capital of China,is a beautiful city.