's - Apostrophe

Singular:

Add 's:
Examples:
Mandy's brother John plays football.
My teacher's name is Alex Liang.

Plural:

Add the apostrophe ' to regular plural forms:
Examples:
The girls' room is very nice.
The Smiths' car is black.

Add 's to irregular plural forms:
Examples:
The children's books are over there.
Men's clothes are on the third floor.

If there are multiple nouns, add an 's only to the last noun:
Peter and John's mother is a teacher.


Exercise:

Write apostrophe 's into the gaps. Example: I met _______ sister yesterday. (Mandy) Answer: I met Mandy's sister yesterday. 1) This is book. (Peter) 2) Let's go to the . (Smiths) 3) The room is upstairs. (children) 4) sister is twelve years old. (John) 5) and bags have blue stickers. (Susan - Steve) 6) shoes are on the second floor. (men) 7) My car was not expensive. (parents) 8) CD player is new. (Charles) 9) This is the bike. (boy) 10) These are the pencils. (boys)
Answer: 1) This is Peter's book. 2) Let's go to the Smiths'. 3) The children's room is upstairs. 4) John's sister is twelve years old. 5) Susan and Steve's bags have blue stickers. 6) Men's shoes are on the second floor. 7) My parents' car was not expensive. 8) Charles's CD player is new. 9) This is the boy's bike. 10) These are the boys' pencils.