Of

Used for belonging to, relating to, or connected with:
 

• The secret of this game is that you can’t ever win.

• The highlight of the show is at the end.

• The first page of the book describes the author’s profile.

• Don’t touch it. That’s the bag of my friend’s sister.

• I always dreamed of being rich and famous.

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Used to indicate reference:
 

• I got married in the summer of 2000.

• This is a picture of my family.

• I got a discount of 10 percent on the purchase.

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Used to indicate an amount or number:
 

• I drank three cups of milk.

• A large number of people gathered to protest.

• I had only four hours of sleep during the last two days.

• He got a perfect score of 5 on his writing assignment.