Matching Pairs Possessive 's Online version Brayan Ramirez Brian Reyes by Brayan Ramirez 1 It shows a relationship of belonging between one thing and another. 2 3 4 Functions of the possessive 5 Fixed expression 6 The car of John 7 To form the possessive... John's car Possessive add apostrophe + s to the noun. If the noun is plural, or already ends in s, just add an apostrophe after the s. 'Belonging to' or 'ownership' is the most common relationship the possessive expresses. Men's clothes a day's work It is John's car.