weak:→ weaker,→ weakest
angry:→ angrier→ angriest
famous: →more famous,→ most famous
quick:→ quicker →quickest
early:→ earlier →earliest
free →freer(freeer这个不常用)→ freest
calm→ calmer →calmest
wild →wilder→ wildest
serious→ more serious→ most serious
athletic→ more athletic →most athletic
necessary→ more necessary →most necessarypoor→poorer→poorest fast→faster→fastest
fast→faster→fastest
big→bigger→biggesthot→hotter→hottesdry→drier→driest不规则变化:
good / well→better→best
bad / ill→worse→worst
many / much→more→most
little→less→least
late→later→ / latest
late→latter→last
far→farther→farthest
far→further→furthest