3、只有一个辅音字母结尾的重读闭音节单词, 先双写这个辅音字母, 再加-er或-est。 big – bigger – biggest sad--sadder--saddest thin – thinner – thinnest red—redder--reddest fat --- fatter --- fattest glad—gladder--gladdest 4、以“辅音字母+ y”结尾的单词,先改y为i, 再加-er或-est。除early 外,以ly结尾的单词,一般在词前加more / most. easy easier easiest happy happier happiest busy busier busiest early earlier earliest carefully more carefully most carefully 5、多音节词和部分双音节词在词前加 more或most。 eg. delicious – more delicious -- the most delicious beautiful – more beautiful -- the most beautiful interesting – more interesting –the most interesting important – more important--the most important friendly - more friendly---the most friendly quickly---more quickly– the most quickly happily---more happily – the most happily 注: early--earlier--earliest 二、构成不规则变化的单词: eg. good / well – better – best ill / bad / badly – worse – worst many / much – more – most little – less – least far – farther(指路程更远) / further(指意义深远或进 一步) – farthest / furthest old—older(指年龄大小)/ elder(指家庭成员长幼)---