much\many---more
early---earlier
easy---easier
late---later
high---higher
hard---harder
useful---more useful
nervous---more nervous
far---farther\further
healthy---healthier
fresh---fresher
bright---brighter
bad---bader
tired---more tired
delicious---more delicious
hungry---hungrier
strong---stronger
good\well---better
young---younger
fast---faster
old（LZ应该是打错了吧）---older
funny---funnyer
different---more different
shy---shyer
kind---kinder
little---less
smart---smarter
如果还有疑问可以向我求助
在附赠楼主一个口诀：热（hot）死大(big)胖子(fat)和瘦子(thin)都要双写再加er