1. Comparative adjectives are used to compare two things and are formed by adding "-er" to single-syllable adjectives or changing the ending to "-ier" for those ending in "-y". For adjectives of two or more syllables, "more" is used.
2. Superlative adjectives compare one item to a group and are formed by adding "the" and "-est" to single-syllable adjectives or changing the ending to "-iest" for those ending in "-y". For longer adjectives, "the most" is used.
3. Comparisons can be modified to show differences or similarities, and irregular adjectives have