1. If the adjective has one-syllable, we can add -er for Comparative and -est for Superlative
fast → faster → the fastest
2. If the adjective has one-syllable and ending in -e, we just add -r for comparative and -st for superlative
late → later → the latest
3. If the adjective is consonant+vowel+consonant, add double last consonant + -er or -est
big → bigger → the biggest
4. But some adjective are irregular
a. good → better → the best
b. bad → worse → the worst
c. far → farther or further → the farthest or the furthest
fast → faster → the fastest
2. If the adjective has one-syllable and ending in -e, we just add -r for comparative and -st for superlative
late → later → the latest
3. If the adjective is consonant+vowel+consonant, add double last consonant + -er or -est
big → bigger → the biggest
4. But some adjective are irregular
a. good → better → the best
b. bad → worse → the worst
c. far → farther or further → the farthest or the furthest