Big-bigger-biggest. short-shorter- shortest. clean- clearer- clearest. beautiful- more beautiful- most beautiful. large-larger- largest. famouse-more famous- most famous. good-better-best. bad-worther-worth. dirty-dirtier-dirtiest. not не думаю что есть сравнительная степень у слова нет. pretty- prettier- prettiest. day день и тоже нет степени. little-litter- littlest. much-more-most.
