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One of the uses of the apostrophe is to show possession, which means who something belongs to.

 

For example:

the girl's room = the room belonging to the girl

 

a girl

 

If the room belongs to more than one girl, then the apostrophe comes after the 's'.

the girls' room = the room belonging to the girls

 

The word girl is a singular noun but the word girls is a plural noun (plural means 'more than one').

 

Most plural nouns in English end in 's' so the apostrophe comes after the 's'.

the boy's ball = the ball belonging to one boy

the boys' ball = the ball belonging to more than one boy

 

Let's have a go at some questions now.

 

boy thinking

 

Want a bit more help with this before you begin? Why not watch this short video?

10 questions