1. USE
1.1. the comparatives we used when we compare two things and we use THAN
1.1.1. short adjectives: add "-er"
1.1.1.1. Variation: if the adjective ends in -e, just add -r
1.1.1.1.1. the cat is faster than the dog
1.1.1.2. Variation: if the adjective ends in consonant, vowel, consonant, double the last consonant
1.1.1.2.1. I'm bigger than my sister
1.1.1.3. Variation: if the adjective ends in -y, change the y to i
1.1.1.3.1. she is happier than my friend
1.1.2. long adjectives: use "more"
1.1.2.1. all adjectives of 3 or more syllables
1.1.2.1.1. the iphone is more expensive than the samsung
1.1.2.2. syllable adjectives not ending in -y
1.1.2.2.1. the iphone 13 is more modern than the first iphone
1.1.3. The following adjectives have irregular forms
1.1.3.1. good → better well (healthy) → better bad → worse far → farther/further
2. USE
2.1. the superlative we used to say when a thing is more than the rest
2.1.1. short adjective
2.1.1.1. if the adjective ends in consonant, vowel, consonant, double the last consonant and add -EST
2.1.1.1.1. My house is the newest in the street.
2.1.1.2. if the adjective ends in -e, just add -st
2.1.1.2.1. Wider (correct) not wideer (incorrect)
2.1.1.3. if the adjective ends in -y, change the y to i and next we add the -est
2.1.1.3.1. My granddaughter is the prettiest.
2.1.1.4. If the adjective ends in a consonant, the last consonant is doubled before adding the suffix “-est”.
2.1.1.4.1. My pug is the fattest pug that ever lived.
2.1.2. long adjective
2.1.2.1. all adjectives of 3 or more syllables we use ´´most´´
2.1.2.1.1. He is the most creative person in the classroom.
2.1.3. With some 2-syllable adjectives, we can use "-est" OR "most": for example
2.1.3.1. quiet → the quietest/most quiet clever → the cleverest/most clever narrow → the narrowest/most narrow simple → the simplest/most simple
2.1.4. irregular adjectives:
2.1.4.1. good → the best bad → the worst far → the farthest/furthest
3. AS...AS
3.1. USE
3.1.1. We use as + adjective/adverb + as to make comparisons when the things we are comparing are equal in some way
3.1.1.1. The world's biggest bull is as big as a small elephant. The weather this summer is as bad as last year