This document discusses the rules for forming comparative adjectives in English. It explains that adjectives are generally made comparative by adding -er or using more/less. One-syllable adjectives typically add -er, while two-syllable adjectives ending in -y change the -y to -ier. Adjectives with three or more syllables use more. There are also irregular comparatives like good/better and bad/worse that must be memorized. Examples are provided to illustrate each comparative formation method.