写出下列形容词的比较级和最高级

old-older-oldest
hot-hoter-hottest
brave-braver-bravest
soft-softer-softest
large-larger-largest
difficult-more difficult-the most difficult
far-father/futher-farthest/furthest
thin-thiner=thinest
big-bigger-biggest
heavy-heavier-heaviest
clever-cleverer=cleverest
happy-happier-happiest
busy-busier-busiest
important-more important-the most important
tidy-tidier-tidiest
near-nearer-nearest
simple-simpler-simplest
fat-fatter-fattest
easy-easier-easiest
wide-wider-widest

+er/es told brave soft large far clever near simple
-y+ier/iest heavy happy busy tidy easy
双写+er/est hot thin big fat
+more difficult important