COMPARATIVE
SUPERIORITY (-ER / MORE)
MINORITY (less...than)
EQUALITY (AS...AS)
http://gamestolearnenglish.com/basketball/
TO REVISE QUESTIONS AND ANSWERS (look at the drawings and click on one word from each group)
FORM THE 3 GROUPS: -S, -ES, -IES
http://www.interactive.cambridge.org/media/games/level1/game4_robot/