1. The document provides examples of comparative structures in Portuguese including: comparative of superiority using "mais/menos" and "melhor/pior"; irregular comparatives like "bom/melhor" and "mau/pior"; comparative of equality using "t達o...como"; and comparative of inferiority using "menos...do que". 2. Examples compare people, places, things, prices, speeds, and adjectives like handsome, rich, hot, expensive, and delicious. 3. Comparisons follow the structures "X is more/less Y than Z" or "X is as Y as Z".