Use the comparative to show that something has a greater quality of some trait compared to another subject.
One Syllable / -er
small – smaller This book is smaller than that book.
cold – colder Alaska is colder than Hawaii.
young – younger You are younger than your parents.
One Syllable ends in /e/ -r
safe – safer Japan is safer than most countries.
nice – nicer The weather is nicer in summer.
close – closer His house is closer to the airport than mine.
Consonant + vowel + Consonant -(x)er
hot – hotter It is usually hotter at noon than midnight.
big – bigger My town is bigger than before.
fat – fatter I am always a little fatter after the holidays.
Two Syllable ends in /y/ -ier
happy – happier I am happier now than before.
angry – angrier The boss is angrier in the morning.
pretty – prettier That shirt looked prettier on you.
Two or More Syllables >> more -
dangerous – more dangerous
The city is more dangerous now.
expensive – more expensive
Everything is more expensive these days.
difficult – more difficult
This test is more difficult that the last one.
good – better Life was better before.
bad – worse I am still sick. I feel worse than yesterday.