八年级英语上册_unit 5 lesson 30 a famous friend形容词比较级和最高级的构词规则课件 （新版）冀教版

形容词比较级和最高级的构词规则,一、规则变化,1.单音节和少数双音节单词，一般在词尾加“er”或“est”。如：clean,tall,small,cheap,short,long,light,high2.以不发音字母“e”结尾的单词，直接在词尾加“r”或“st”。如：nice,late,close,fine,large,free,rude,3.以重读闭音节结尾的单词，如果词尾只有一个辅音字母时，应先双写这一辅音字母，再加“er”或“est”。fat,big,red,thin,hot,fat,sad,wet4.以辅音字母+y结尾的单词，应先改“y”为“i”，在加“er”或“est”。happy,easy,heavy,healthy,busy,lucky,pretty,sunny,funny5.其他双音节单词和多音节单词，都在其前“more”或“most”。(beautiful,interesting),二、不规则变化合二为一共三对:“坏bad”,“病ill”的比较级为worse,最高级为worst.两多many/much”的比较级为more,最高级为most.“两好good/well”的比较级为better,最高级为best.一分为二只两个，一是“远far”的比较级为farther/further,最高级为farthest/furthest.二是“老old”的比较级为older/elder，最高级为oldest/eldest.还有一词little“少”的比较级为less,最高级为least.,I.原级用法:1.as+adj/adv.的原级+as(肯,否),(not)soas(否)eg.Therulerisaslongasthatone.HesingsaswellasJack.Hedoesntsingas(so)wellasJack.2.asmuchas,asmanyas与一样多eg.Ihavedoneasmuchworkashedidyesterday.Youcantakeasmanybooksasyoucan.,II.比较级用法:1.比较级+than2.比较级+and+比较级,表示“越来越”eg.warmerandwarmer,nicerandnicer,moreandmorebeautiful,moreandmorefun3.the+比较级the+比较级eg.Themoreyoureadthebook,themoreinterestingyoufound.4.比较级的修饰语有:much,far,even,alittle,alot,abit,rather,still,agreatdeal(大量)+adj./adv.比较级5.当比较级后没有than,而为ofthetwo的结构,比较级前加the.eg.ThetallerofthetwogirlsisMary.,最高级用法:1.形容词最高级用于in,of或among的结构中,形容词最高级前+theeg.Iamthebestof(among)thethree.Heisthethinnestboyinmyclass.2.副词最高级不需+theeg.Jimgoestobedlatestinmyfamily.)3.比较级和最高级互换(比较时要把自己排除在外。注意比较的范围)eg.ShanghaiisthelargestcityinChina.ShanghaiislargerthananyothercityinChina.,IV.OthersAlicesdietwaslesshealthythanDannysdiet.(不如)(morethan胜于)ThisT-shirtisthesamesizeasthatone.Theredshirtisfiveyuancheaperthanthatblueone.Whichistheleastinterestingfilmyouveeverseen?ThisparkisthreetimesasbigastheSummerPalace.(倍数+asas)Thisbookcosttwiceasmuchasthatone.,IthinkEnglishisasasmaths.importantB.moreimportantC.mostimportant2.Mothergetsupinmyfamily.earlyB.earlierC.earliestD.theearlier3.ThenextmorningJennygotupeven.earlyB.earlierC.earliestD.theearliest4.Emilysingsofthefivegirls.goodB.wellC.betterD.best5.Infact,Deliaisalittlethanhereldersister.tallB.tallerC.tallestD.thetallest6.HeididoesnotjumpsoasJane.A.highB.higherC.highestD.thehighest,7.Ofallthestarsthesunistous.closeB.closerC.closestD.theclosest8.Barbarafeltmuchthanbeforeafterdark.coldB.colderC.coldestD.