1. Comparatives
1.1. Short adjectives
1.1.1. Form: Adj-er + than
1.1.2. Double the final consonant if it comes right after a vowel. Eg: lower, shorter
1.1.3. For adj ending in –e, just add –r. Eg: cuter
1.1.4. • For adj ending in –y, change –y to –i and add –er. Eg: healthier, wealthier
1.2. Long adjectives
1.2.1. Form : more / less + adj + than
1.2.2. Eg: more intelligent, more attractive
1.2.3. Some adj have two comparatives forms. Eg: narrow => narrower, more narrow
1.3. Irregular
1.3.1. bad => worse
1.3.2. good => better
1.3.3. far => farther/further
2. Superlatives
2.1. Short adjectives
2.1.1. Form : the + adj-est
2.1.2. Double the final consonant if it comes right after a vowel. Eg: shortest
2.1.3. For adj ending in –e, just add –st. Eg: cutest
2.1.4. For adj ending in –y, change –y to –i then add –st. Eg: tidy => tidiest
2.2. Long adjectives
2.2.1. Form : the + most/least + adj
2.2.2. Eg: the most beautiful, the least polluted
2.2.3. Some adj have two superlatives forms. Eg: narrow => the narrowest/most narrow
2.3. Irregular
2.3.1. bad => worst
2.3.2. good => best
2.3.3. far => farthest/furthest