First, the comparative degree and superlative rule of adjectives and adverbs 1. General monosyllabic words and a few disyllabic words ending in -er and -ow, followed by -er in the comparative degree and-est in the superlative degree; (1) monosyllabic words such as: small → small → small est short → short test? Tall → tall → tall and great → great → great (2) smart → smart → cleverest and narrowest → narrower and narrowest disyllabic words? 2. For monosyllabic words ending in silent e, add -r after the original level and-ST after the original level of the highest level; Such as: big → big → big nice → nice → abler → ablest3. In stressed closed syllables (i.e. consonants+vowels+consonants), the last consonant is written in double, with -er added to the comparative level and-est added to the superlative level; For example: big → bigger → hotter → hotter → hottest fat → fatter → fattest 4. For disyllabic words ending in "consonant +Y", change y to I, add -er to the comparative level, and add -est to the superlative level; Such as: easy → easy → easy → heavy → heavy? Busy → busier → busy and happy → happier → happiest 5. For other disyllabic words and polysyllabic words, add more before the superlative in the comparative degree and the foremost; Such as: beautiful → more beautiful → most beautiful and different → more different → most different? Easy → easier → easiest to notice: (1) the definite article The must be used before the superlative adjective, not before the superlative adverb. Sahara is the largest desert in the world. (2) the adjective most is not preceded by the, which does not mean the superlative meaning, but only means "very". ? This is a very important question. ? This is a very important question. ? 6. The comparative degrees and superlatives of a few adjectives and adverbs are irregular and must be memorized. Such as: good → better → best good → better → best bad → worst → worst disease → worst old → elder/elder → oldest/elder?