This document provides information on forming comparatives and superlatives in English. It explains that comparatives are used to compare two things using "as...as" or "than". Superlatives refer to one thing only and indicate it is the best/worst. For adjectives, comparatives are formed by adding "-er" to one-syllable words and changing "-y" to "-ier" for two-syllable words ending in "-y". Superlatives add "-est" or change "-y" to "-iest". For adverbs, one-syllable forms add "-er/-est" and others use "more/most". Exceptions include irregular forms like "good-better-best" and "