一、在词尾加- er 和 – est原级比较级；表示更…最高级；表示最…short 矮的shortershortesttall 高的tallertallestlight 轻的lighterlighteststrong 强壮的strongerstrongestweak 弱的weakerweakestslow 慢的slowerslowestfast 快的fasterfastestyoung 年轻的youngeryoungestold 老的,旧的olderoldestloud 大声的louderloudestlong 长的longerlongestsmall 小的smallersmallestnew 新的newernewestcold 冷的coldercoldestbright 明亮的brighterbrightestsmart 聪慧的smartersmartestkind 友好度kinderkindestsweet 甜的sweetersweetestthick 厚的thickerthickestclean 洁净的cleanercleanestclever 聪慧的cleverercleverest三、辅音加 y 结尾的,变 y 为 i， 再加 –er 或 – est原级比较级最高级healthy 健康的healthierhealthiestheavy 重的heavierheaviestlazy 懒的lazierlaziesteasy 容易的easiereasiestsalty 咸的saltiersaltiestnoisy 吵闹的noisiernoisiestfunny 有趣的funnierfunniestnaughty 淘气的naughtiernaughtiestpretty 可爱的prettierprettiestearly 早的earlierearliestdirty 脏的dirtierdirtiest二、以-e 结尾的只加 – r 和 – st 原级比较级最高级late 迟到laterlatestlarge 大的largerlargestbrave 勇敢的braverbravest四、双写辅音字母再加 —er 和 —est 原级比较级最高级hot 热的hotterhottestbig 大的biggerbiggestfat 肥的fatterfattestthin 瘦的thinnerthinnestwet 湿的wetterwettest六、不规则变化原级比较级最高级good/well 好的betterbestbad/ill 坏/的worseworstmany/much 许多的moremostfar 远的farther/ furtherfarthest/ furthestlittle 小的less leastold 老的，旧的Older/elderOldest/eldest 五、双音节词和多音节词都加 – more 或 – most原级比较级最高级important 重要的more important the most importantdangerous 危险的more dangerous the most dangeroushonest 诚实more honest the most honestbeautiful 美丽的more beautiful the most beautifulfamous 著名的more famous the most famousinteresting 有趣的more interesting the most interestingexciting 令人兴奋的more exciting the most excitingdelicious 美味的more delicious the most deliciousdifficult 困难的more difficult the most difficult
