of
US /əv/
UK /əv/
1.
expressing the relationship between a part and a whole
:
•
A piece of cake.
•
The top of the mountain.
2.
expressing the relationship between a verb and its object
:
•
He is afraid of heights.
•
She approved of the plan.
3.
indicating origin or source
:
•
He is a man of great courage.
•
The city of London.