Oraciones con adjetivos en comparativo y superlativo

Young
Im the younger than my sister
My cousin is the youngest at home
Big
My father car is bigger than the car of my uncle
My room is the biggest of my house
Dirty
Moises dog is dirtier than de dog of Andrea
El Guaire is the dirtiest river in Venezuela
Tall
My father is the tallest of my family
Im taller than my sister
Good
McDonalds's is better than Wendy's
Sherk is the best movie of the world
Fat
Im the fattest in my house
My dog is fatter than the dog sonia
Difficult
English is more difficult than matthematics
The english of UK is the most difficult of the world
Expensive
Converse is more expensive than Justice
Paris is the most expensive city of the world
Thin
Im the thinniest of my house
Karla is tinner than Sabrina
Small
My sister is smaller than my cousin
The ant is the smallest animal