形容词比较级和最高级的构词规则规则变化1.单音节和少数双音节单词,一般在词尾加“er”或“est”。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”。nice,late,close,fine,large,free,rude3.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,都在其前面加“more”或“most”。(beautiful,interesting)6.不规则变化。记忆口诀:合二为一共三对,“坏bad”,“病ill”,两多many/much”和“两好good/well”,一分为二只两个,一是“远far”来二是“老old”,还有一词little含双义,只记“少”来不记“小”。Readandcompare:younglongfullshortsmalloldfineyoungeryoungestlongerlongestfullerfullestshortershortestsmallersmallestolderoldestfinerfinesteasyhungryearlyheavybigredeasiereasiesthungrierhungriestearlierearliestheavierheaviestbiggerbiggestredderreddestmanyfamousexcitingcarefullymoremostmorefamousmostfamousmoreexcitingmostexcitingmorecarefullymostcarefullywethotlittlefewillbadhealthyworseworstwetterwettesthotterhottestlessleastfewerfewestworseworsthealthierhealthiestI.原级用法:1.as+adj/adv.的原级+as(肯,否),(not)so…as(否)1).Therulerisaslongasthatone.2).HesingsaswellasJack.3)Hedoesn’tsingas(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.ThetallerofthetwogirlsisMary.III.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+theegIamthebestof(among)thethree.Heisthethinnestboyinmyclass.else2.副词最高级不需+theeg.Jimgoestobedlatestinmyfamily.)2.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.ShanghaiislargerthananyotherinChinaJohnisthethinneststudentintheclass.Johnisthinnerthananyotherstudentintheclass.Johnisthinnerthan__________________intheclass.anyone/anybodyelse1.IthinkEnglishisasasmaths.A.importantB.moreimportantC.mostimportantD.importanterB2.Mothergetsup____inmyfamily.A.earlyB.earlierC.earliestD.theearlierc3.ThenextmorningJennygotupeven.A.earlyB.earlierC.earliestD.theearliestB4.Emilysingsofthefivegirls.A.goodB.wellC.betterD.best5.Infact,Deliaisalittle________thanhereldersister.A.tallB.tallerC.tallestD.thetallestDB7.Ofallthestarsthesunis______tous.A.closeB.closerC.closestD.theclosestD8.Barbarafeltmuch_____thanbeforeafterdark.A.coldB.colderC.coldestD.thecoldestB9.Thisjacketissmallerthanthatonebutit’s.A.expensiveB.moreexpensiveC.mostexpensiveD.themostexpensiveB10.Ourcountryhasbecome____inthepast20years.A.moreandmorerichandstrongB.morericherandmorestrongerC.morerichandmorestrongD.richerandstrongerD15.Tomismorecarefulthananyinhisclass.A.boyB.otherboysC.boysD.otherboyB12.-----WhatdoyouthinkofMissLi’steaching?------Oh,nooneelseteaches__________thanherA.goodB.wellC.fineD.betterD13.ThepopulationofJapanisthanthatofChina.A.fewerB.smallerC.largerD.moreC14.ThenextdayJimwasverywetagain,andhismotherbecameangrier.A.veryB.moreC.evenD.everC14.ThenextdayJimwasverywetagain,andhismotherbecameangrier.A.veryB.moreC.evenD.everC15.Tomismorecarefulthananyinhisclass.A.boyB.otherboysC.boysD.otherboyBDosomeexercises同义句转换1.Heisthetalleststudentinhisclass.2.Heis________________________studentinhisclass.Heis________________________studentsinhisclass.3.Peterdrawswell,Lileidrawsbetter.Lileidraws______ofthetwo.tallerthananyothertallerthantheotherbetter3.Thetractorgoesfasterthanthebike.Thebikegoes___________thanthetractor.4.Hiscakesdearerthanthetwins’cakes.Hiscakeis_____________ofthethreemoreslowlythedearest选择填空1.WhichdoesJimmylike,ChineseorArt?A.wellB.bestC.betterD.muchC2.TheChangjiangRiverisoneofintheworld.A.thelongestriverB.longestriversC.thelongestriversD.longerriversC3.________ofthetwowomenisMrsBrown.A.ThebeautifulB.ThemorebeautifulC.MorebeautifulD.ThemostbeautifulB4.Mymooncakeisnicerhis.A.likeB.withC.forD.thanD5.Youarefatterthan.A.heB.hisC.himD.heistall6.Hejumpsofthethree.A.farB.furtherC.farthestD.furthest7.Myhairislongerthan.A.mysisterB.KateC.mybrother’sD.Lucys’8.Thereis_____paperhere.Pleasebringsome.A.littleB.lessC.fewerD.alittle9.Thepenis___thanthatone.A.morecheapB.cheapC.muchcheaperD.quitecheaper10.TomspeaksChinese___betterthanJimmy.A.moreB.veryC.alotofD.much11.TherearegirlsinClassTwothaninClassFour.A.moreB.nicestC.mostD.best12.It’stooforyoutodothat.A.easyB.moredangerousC.harderD.theeasiest13.Whohasapplesnow,Jim,LilyorLucy?A.muchB.biggestC.betterD.themost14.Youhavemorerulersthanme.Butarenicerthan.A.mine,yoursB.mine,yourC.my,yoursD.my,your15.Tingtingis_________thanMeimei,butMeimeiis_______thanTingting.A.tall,strongerB.taller,strongestC.tallest,strongD.taller,stronger16.Motherisinmyfamily.A.busyB.busierC.thebusiestD.morebusy18.Thedumplingsarethanthenoodles,Ithink.A.morenicerB.muchdeliciousC.veryniceD.muchmoredelicious19.Sheisthanmeatdrawings.A.betterB.bestC.goodD.harder20.-Thisbluesweateristoobigforme.-Willyoupleaseshowmea________one?A.smallB.smaller