This document discusses comparatives and superlatives in English. It explains that comparatives are formed by adding "-er" to adjectives like "big" and "fast" to compare two things, as in "Bogota is bigger than Medellin." Superlatives compare three or more things and are formed by adding "the" before the adjective, like "Medellin is the biggest city in Colombia." It provides examples of regular adjectives that follow these patterns as well as irregular adjectives like "good," "bad," and "many."