58.Relatives
1
THING PERSON
Subject
Object
Possessive
The car  WHICH   made that noise is the blue one.
The man  WHO   said that is my teacher.
The man WHOSE  car you bumped is my teacher.
The car I use is very old.
The man  I met is my teacher.
WHICH THAT  
O
WHO(M) THAT  
O
The house WHOSE   roof was destroyed is mine.
His girlfriend, who lives in New York,  is a pain.
2
His girlfriend who lives in New York  is a pain.
3
What worries me is  that she smokes too much.
4
She smokes too much, which worries me.
5
Do what  I say / Do all that  I say.
[He’s got one girlfriend.]
[He’s got several girlfriends.]