Tom is a handsome boy. Tom是个英俊的男孩。
There is a good boy. 有个乖男孩。
Tom is the boy who is handsome.
There is a boy who is good.
He is a good person who would like to help anyone. 他是一个好人，肯帮助任何人。
1.He is a good person who would like to help anyone. 他是一个好人，肯帮助任何人。
He is a good person.
The person would like to help anyone.
2.He is the man whom I met yesterday.
He is the man.
I met the man yesterday.
1.This is a car which(that) is red.
This is a car.
The car is red
2.This is the book which you gave me yesterday.
This is the book.
You gave me the book yesterday
3.This is the room in which you were born.
This is the room.
You were born in the room
This is the bike whose brake was damaged(the brake of which was damaged) 这辆自行车的刹车坏了。
This is the bike.
The bike's brake was damaged.或The brake of the bike was damaged.
先行词The bike在第二句中做定语，什么的刹车坏了？The bike的刹车坏了。修饰这个刹车（the brake）
1、This is the school. You studied in the school when you were young.
2、I know the hospital. You were born in it.
1.This is the school in which you studied when you were young.
2.I know the hospital in which you were born.