初中英语语法之比较级、最高级ppt课件

.,MakeComparisons,Writedownthecomparativesandthesuperlativesofthesewordsbignicelongnewcheapyounglatesafethirstyheavyeasyhardhighfewoldthinexpensiveinterestingcarefullyquicklygoodbadlittlefarmany/much,.,形容词的级,原级：即形容词的原形。small,good,pretty,big,many比较级：两个人或物之间的比较。smaller,better,taller,older,more最高级：三个或三个以上的人或物之间的比较。smallest,tallest,newest,best,.,形容词的比较等级规则变化见下表:,单音节和少数多音节的形容词的比较级的变化：,.,双音节或多音节形容词的比较级：,1、一般是在原级前加more构成比较级，在原级前加most构成最高级。beautifulmorebeautifulmostbeautifulinterestingmoreinterestingmostinterestingdangerousmoredangerousmostdangerous2、某些单音节形容词，加more,most构成比较级和最高级。gladmoregladmostgladpleasedmorepleasedmostpleasedtiredmoretiredmosttired,.,3、少数多音节形容词，特别是y和ow结尾的，在原级和加er和est构成比较级和最高级。happyhappierhappiestnarrownarrowernarrowest4、有些双音节和单音节形容词，既可以加er或est构成比较级和最高级，也可以加more和most构成比较级和最高级。righthugecalmfreetruefond,.,不规则形容词的比较级和最高级：good/wellbetterbestbad/illworseworstlittlelessleastmany/muchmoremostfarfarther/furtherfarthest/furthestoldolder/elderoldest/eldest,.,比较级的用法：than汤姆比杰克高.这只箱子要比那只箱子大.那些苹果比这些大.第一个问题很容易,但第二个更容易.,TomistallerthanJack.,Thisboxisbiggerthanthatone.,Thoseapplesarebiggerthantheseones.,Thefirstquestionisveryeasy,butthesecondoneiseasier.,.,Moreexamples:Maryisclevererthanherlittlesister.Thenewbuildingishigherthantheoldone.Hisshirtismoreexpensivethanmine.KateismorebeautifulthanLilyis.SheisfiveyearsolderthanIam.Heis2centimeterstallerthanher.Thisruleris20centimeterslongerthanthatone.,.,(2)数量的比较我的笔比你的多.我喝的茶比他多.他吃的饭比我少.一班的学生比二班多.,Ihavemorepensthanyou(do).,Idrinkmoreteathanhe(does).,HehaslessricethanI(do).,TherearemorestudentsinClass1thaninClass2.,.,3、形容词原级的比较。形容词的原级与asas连用表示肯定意思，是“和一样”的意思；与notas/soas连用表示否定意义，是“不如”或“不一样”的含义。Sheisasprettyashermother.Thebookisasnewasthatone.Thestoryisasinterestingasthatone.Thequestionisnotas/sodifficultasthatone.Mybikeisnotas/sogoodasyours.,.,4、形容词比较级的修饰。much+形容词的比较级得多alittle+形容词的比较级一点Thispenismuchbetterthanthatone.TomisalittleshorterthanhisfriendJim.Todayisalittlecolderthanyesterday.Thebookismuchmoreinterestingthanthatone.,.,5.形容词的比较级+and+形容词的比较级（前后形容词是同一个）越来越Sheisbecomingthinnerandthinner.Ourcountryisbecomingricherandricher.Therearemoreandmorestudentsinourschool.Livingintheworldisbecomingmoreandmoredifficult.,.,6、the+形容词的比较级+the+形容词的比较级表示“越，就越”Themoreyoueat,thefatteryouwillbe.Theharderyoustudy,themoreyouwillget.Thesmallerthehouseis,thelessitwillcost.Thesooner,thebetter.,.,7、the+形容词比较级+of短语两者中比较的一个Sheistheprettierofthetwogirls.Thebikeistheolderofthetwo.Hisisthetallerofthetwo.Thisoneisthemorebeautifulofthethetwopicture.,.,形容词最高级的用法(in;of/among)那个短发的女孩是我们班最高的.今天是一年中最热的一天.他的房间是三个中最干净的一个.上海是中国最大的城市.,Thegirlwithredhairisthetallestinourclass.,Todayisthehottestdayoftheyear.,Hisroomisthecleanestofthethree.,ShanghaiisthelargestinChina.,.,注意一些特殊句式,ShanghaiislargerthantheothercitiesinChina.ShanghaiislargerthananyothercityinChina.ShanghaiislargerthananycityinAustralia.,.,TheweatherinBeijingiscolderthanthatinShanghai.ThecarsmadeinChinaarecheaperthanthosemadeinJapan.,.,Moreexamples:Heistheyoungestofallthechildren.Thisbookisthemostinterestingofallbooks.Americaisthemostdevelopedcountryintheworld.TheChangjiangRiveristhelongestriverinChina