原级 比较级 最高级
　　important more important most important
　　difficult more difficult most difficult
　　interesting more interesting most interesting
　　useful more useful most useful
原级 比较级 最高级
　　1.tall taller tallest
strong stronger strongest
old older oldest
　　2.large larger largest
fine finer finest
late later latest
　　3.big bigger biggest
hot hotter hottest
thin thinner thinnest
　　4.easy easier easiest
busy busier busiest
happy happier happiest
　　5.valuable more valuable most valuable
dangerous more dangerous most dangerous
comfortable more comfortable most comfortable