old
comparative:
superlative:
old
comparative: older
superlative: oldest
good
comparative:
superlative:
good
comparative: better
superlative: best
I think it is the _________________ day today.
(cold)
I think it is the coldest day today.
January is the colder month of the year.
colder -> coldest
January is the coldest month of the year.
Fast
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The rabbit is faster than the turtle.
The cheetah is the fastest animal.
dangerous:
comparative:
superlative:
dangerous:
comparative: more dangerous
superlative: the most dangerous
bad
comparative:
superlative:
bad
comparative: worse
superlative: worst
You are the _________________ runner at our school.
(good)
You are the best runner at our school.
Your watch is cheapest than mine.
cheapest -> cheaper
Your watch is cheaper than mine.
Size

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The whale is the largest.
The dog is smaller than the whale.
beautiful
comparative:
superlative:
beautiful
comparative: more beautiful
superlative: the most beautiful
much
comparative:
superlative:
much
comparative: more
superlative: the most
This is ________________ book.
(expensive)
This is the most expensive book.
He is fastest than John.
fastest -> faster
He is faster than John.
Intelligent

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The dog is more intelligent than the fish. The monkey is the most intelligent.