This document discusses the different degrees of adjectives in English: positive, comparative, and superlative.
It provides examples of how to form the comparative and superlative of one-syllable adjectives by adding -er and -est. For adjectives ending in a single consonant preceded by a single vowel, the consonant is doubled before adding suffixes. Adjectives ending in -e drop the -e before suffixes.
It also discusses forming the comparative of two-syllable adjectives ending in -y by changing the -y to -i and adding -er. The superlative of these adjectives is formed by changing -y to -i and adding -