关系代词Who whom whose which用法

帮忙看下，注明哪个修饰主语，宾语，定语

在定语从句中
1、关系代词：who, whom, which, that, whose
指人：who, whom, whose, that
指物：which, that,whose
2、关系副词：when,where,why

★当从句的句子完整时，用关系副词;
当从句的句子不完整时，用关系代词。
（关系代词+介词in/on/at/of等=关系副词）

作主语，先行词是人用who/that
先行词是物用which/that
eg.一个男孩a boy
一个能讲三国语言的男孩the boy who/that can speak three foreign languages
一扇门a door
一扇木制的门the door which/taht is made of wood

作宾语，先行词是人用whom/that(who)
先行词是物用which/that
eg.一个女孩a girl
一个警察正在找的女孩the girl whom/that the police are looking for
一把钥匙a key
一把我昨天弄丢了的钥匙the key which/that I lost yesterday


whose 作定语，先行词可以使人，也可以是物,形式为whose + n.
一位学生a student
一位母亲生病的学生the student whose mother is ill
一个房子a house
一个窗子面朝南的房子the house whose windows face south

eg.I saw a tree. Its leaves were black.
→I saw a tree whose leaves were black.
=I saw a tree of which the leaves were black.
先行词指人：
whose + n. =the + n.+ of whom(或of whom + the + n.)
先行词指物：
whose + n. =the + n.+ of which（或of which.+ the + n.)

关系代词只有whose可以修饰名词，作定语。其它的都不能修饰别的词，只能在句中充当主语（Who、 which）、宾语（whom、which）。