all—taller--tallestlight—lighter--lightest2、以字母e结尾的直接加r;stnice—nicer—nicestfine—finer—finest3、以辅音字母加y结尾的形容词,要变y为i再加er;estheavy—heavier—heaviestbusy—busier--busiest4、以重读闭音节结尾且末尾只有一个辅音字母的形容词,要双写末尾的辅音字母再加er;estthin—thinner--thinnesthot—hotter—hottestbig—bigger—biggest(Attention:重读闭音节须满足以下条件a.以辅音字母+元音字母+辅音字母结尾;b.中间的元音字母发单元音;c.重读。)5、多音节形容词或部分双音节形容词变比较级在前面加more,最高级在前加mostdelicious—moredelicious—mostdeliciousoutgoing—moreoutgoing—mostoutgoing二、不规则形容词的比较级最高级原级比较级最高级good/wellmany/muchlittleill/bad/badlyoldfar注:older一般指年龄大小;Myfatherisolderthanmymother.elder指长幼关系(一般修饰名词作定语);Myelderbrotherisadriver.farther指距离或时间上更远;MeiweiRestaurantisfartheraway.further指程度上进一步(抽象).Somestudentsgoabroadforfurtherstudies.一些学生出国深造.farthest/furthestmorebestleastlessworstworsefarther/furtheroldest/eldestolder/eldermostbetter