The comparative and superlative use of adjectives?

The comparative and superlative use of adjectives?

Monosyllabic words and a small number of disyllabic words (1) in general, at the end of the original level, add - er to form the comparative level, and add - est to form the highest level, such as: high → higher → highest. (2) for words ending in E, add - R or - St directly, such as: large → large → L