Comparative Forms

In English, we use adjectives and adverbs to compare objects, places, and people with certain
rules depending on the type of adjective or adverb that is being used to make the comparison.

1. When we use one-syllable adjectives or adverbs to compare, “er” is added at the end of the adjective
or adverb followed by the word than. When the adjective ends in a consonant preceded by a single vowel, the
final consonant is duplicated.

big 
bigger than 
New York is bigger than Miami. 
fast 
faster than 
My car drives faster than yours. 
fat 
fatter than 
Michael is fatter than George.

2. When we make comparisons using two-syllable adjectives or adverbs that end in y, the y is changed into ier
followed by the word than.

crazy 
crazier than 
He is crazier than his brother. 
lazy 
lazier than 
Peter is lazier than Mike. 
busy 
busier than 
My father is busier than yours. 

3. When making a comparison using three-syllable adjectives or adverbs the word “more” precedes them. We also
have to add the word than after the adjective or adverb.

beautiful 
more beautiful than 
She is more beautiful than her sister. 
expensive 
more expensive than 
Gold is more expensive than silver.
slowly 
more slowly than 
He walks more slowly than his wife.