Expensive - more expensive - the most expensive
Important - more important - the most important
Interesting - more interesting - the most interesting
beautiful - more beautiful - the most beautiful
Famous - more famous - the most famous

That ring is too expensive and I don't have enough money.
My computer is the most important thing in my room.
History is more interesting than maths.
I am the most beautiful girl in the world.
My father is more famous than my mother.
My necklace was really expensive.
The president is really important.
This book is really interesting.
Youre shirt is more beautiful than mine.
Artists are more famous than normal people.