Поставие в такую форму, как по образцу. tall-taller-the tallest big- short- old- small- sweet- hot- long- fine-

Big-bigger-the biggest
short-shorter-the shortest 
old- oldder-tht olddest
smail- smailler- the smaillest
sweet-sweeter-the sweetest
hot-hotter- the hottest
long- longger-the longgest
fine- finer- the finest
надеюсь помогла )