1. Comparative and superlative forms are used to compare two or more things. Comparative compares two items, while superlative compares an item to a whole group.
2. Comparative forms are created by adding "-er" to one-syllable adjectives and using "more" with adjectives of two or more syllables. Superlative forms are created by adding "-est" to one-syllable adjectives and using "most" with adjectives of two or more syllables. Some adjectives are irregular.
3. Links are provided for online exercises to practice comparative and superlative forms of adjectives.