comparative adjectives-rules

"Than" is usually usually used after the comparative adjective.
-er is added to the end of a 1-syllable adjective	cold - colder small - smaller tall - taller	The winter is colder than the summer. The green hat is smaller than the yellow hat. Most basketball players are taller than me.
-er is added to the end of an adjective with 2 syllables, if the word ends in -y.	early - earlier happy - happier crazy - crazier	I came home earlier than my sister. I am happier now than 1 year ago. My friend is crazier than me.
"More" or "less" is used for adjectives that have 2 syllables, if the word doesn't end in -y. Adjectives that end in -y, change the -y to i and add -ed.	honest - more honest difficult- more difficult modern - more modern	The policeman are more honest than criminals. The last test was more difficult than the test today. Our generation is more modern, than our parents generation.
"More" or "less" is used for adjectives that have 3 or more syllables	expensive - more expensive comfortable - more comfortable	My car is less expensive then my sister's car. The chair is more comfortable, then the green chair.
Adjectives that end in -e, only -r is added to end of the adjective.	nice - nicer safe - safer	The beach is nicer then that park. Airplanes are safer then cars.
Adjective that end in with a consonant, vowel, consonant - the last consonant is doubled.	big -bigger hot -hotter	My house is bigger than, my sisters house. The summer is hotter than the winter.