Comparative or superlative
This is the prettiest girl at school.
SUPERLATIVE
short
SHORTER THAN
easy
the easiest
small (comparative)
SMALLER
His shoes are cleaner than my shoes.
COMPARATIVE
slow
SLOWER THAN
COLD
the coldest
fast (superlative)
FASTEST
My brother is cleverer than me at Maths.
COMPARATIVE
cheap
CHEAPER THAN
safe
the safest
sunny (comparative)
SUNNIER
They are the noisiest class of the school.
SUPERLATIVE
funny
funnier than
slow
THE SLOWEST
ugly(comparative)
uglier than
We are the quietest group at school.
SUPERLATIVE
HAPPIER THAN
strong
THE STRONGEST
young (superlative)
THE YOUNGEST