| 先行詞 | 主格 | 所有格 | 目的格 | 
|---|---|---|---|
| 人 | who | whose | whom | 
| 人以外 | which | whose | which | 
| 人と人以外 | that | - | that | 
I have a friend who lives in Boston.
They live in a house which stands on a hill.
The man whom I met on the street works at a bank.
I'm reading a book which I borrowed fro the library.
He has a friends whose wife is a singer.
I'm looking for a book whose subject is jazz.