Unit7-What27s-the-highest-mountain-in-the-world-Se.pptx

初中英语人教版八年级下Unit7 Whats the highest mountain in the world?SectionA（GrammarFocus-4c）1/22Learningaims:1.复习总结比较级及最高级组成及使用方法。2.利用比较级和最高级对同类事物进行描述。2/22LiuXiangistallerthanZhouJielun.ZhouJielunistall.YaoMingisthetallestofthem.姚明刘翔周杰伦Look and say3/22Whatsthe_mountainintheworld?(high)Qomolangma.HowhighisQomolangma?Its8,844.43metershigh.Its_thananyothermountain.(high)highesthigherReviewFillintheblanks.4/22Whichisthe_(deep)saltlakeintheworld?TheCaspianSeaisthe_ofallthesaltlakes.(deep)DidyouknowthatChinaisoneofthe_(old)countriesintheworld?Yes,Idid.Itsmuch_(old)thantheUS.deepestdeepestoldestolder5/22Presentation一、组成规则原级比较级最高级（1）普通单音节词在词尾加-er和-estlongfastlongerfasterlongestfastest（2）以“e”结尾单音节词在词尾加-r和-stnicelatenicerlaternicestlatest规则改变规则改变6/22规则原级比较级最高级（3）重读闭音节，词尾只有一个辅音字母，须双写最终一个辅音字母，再加-er或-estbighotsadgladbiggerhottersaddergladderbiggesthottestsaddestgladdest（4）辅音字母+y结尾，变y为i，再加-er和-estheavyangryfunnyheavierangrierfunnierheaviestangriestfunniest规则改变规则改变7/22不规则改变不规则改变原级比较级最高级good/well好better愈加好best最好bad差，ill坏worse更差；更坏worst最差；最坏many/much多more更多most最多little少less更少least最少8/22不规则改变不规则改变原级比较级最高级old年老；古老older较老；较旧oldest最老；最旧；最年长elder年长eldest最年长far远farther（指距离）更远farthest（指距离）最远further（指距离和抽象概念）较深远furthest（指距离和抽象概念）最深远9/22二、常见使用方法原级原级句型例句(1)“as+形容词原级+as”，在否定句中用“notso.as”结构LucyisnotsotallasLily.露西不如莉莉高。(2)倍数+as+形容词原级+asOurschoolisthreetimesasbigastheirs.我们学校是他们三倍大。10/22使用方法例句(1)双方比较，表示一方超出另一方时，用“比较级+than”结构ChinaislargerthanItaly.中国比意大利大。(2)用于“less+原级+than”（注意此结构不用于单音节词）Thebookislessinterestingthanthatone.这本书不如那本书有趣。(3)倍数+比较级+thanTheboxisthreetimesbiggerthanthatone.这个箱子是那个三倍大。比较级比较级11/22使用方法例句(4)“比较级+and+比较级”表示“越来越”Ourcountryisbecomingstrongerandstronger.我们国家正变得越来越强大。(5)“the+比较级，the+比较级”表示“越，就越”Themore,thebetter.多多益善。(6)the+比较级+ofthetwo+名词复数Thetallerofthetwoboysismybrother.两个男孩中，较高那一个是我哥哥。比较级比较级12/22使用方法例句(1)the+形容词最高级+名词+表示范围短语或从句Springisthebestseasonoftheyear.春天是一年中最好季节。(2)“oneofthe+最高级+复数名词”表示“最之一”KobeisoneofthebestbasketballplayersinNBA.科比是NBA最好篮球运动员之一。最高级最高级13/221.Ourfamilyhasboughtacarsowecantravel_thanbefore.A.mosteasilyB.lesseasilyC.easilyD.moreeasily2.Myfathertoldmeastorylastnight.Itis_oneIveeverheard.A.thefunniestB.funniestC.funnierD.thefunnierDA活学活用活学活用14/223.The_friendsyouhave,the_youwillbe.A.more,happyB.many,happyC.more,happierD.many,happier4.Whenheheardacryforhelp,heranoutas_ashecould.A.hardlyB.quicklyC.finallyD.slowlyCB15/22Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_riversintheworld.Itsalittle_thantheYangtzeRiver.2.Qomolangmais8,844.43meters_.Itsoneofthemost_placesforseriousmountainclimbers.longestlongerhighpopular4a16/223.Nooceanintheworldisas_asthePacificOcean.4.AlthoughJapanis_thanCanada,itis_smaller.bigoldermuch17/22Writetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:_and_TheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.theYangtzeRivertheAmazonRiver4b18/221.Sheis_than_.A.busier/usB.busier/weC.morebusy/usD.morebusy/we2.Chinais_countryintheworld.A.thethirdlargestB.thelargestthirdC.thethirdlargeD.athirdlargest4.Whichis_seasoninBeijing?Ithinkitsautumn.A.goodB.betterC.bestD.thebestAAExerciseD19/224.Whichis_,thesun,themoonortheearth?Themoonis.A.smallB.smallerC.smallestD.thesmallest5.IstudyEnglishas_asmybrother.A.hardB.harderC.hardestDA20/227.Whichis_,abicycleoracomputer?A.expensiveB.moreexpensiveC.themostexpensive8.TheYellowRiverisoneof_riversinChina.A.longB.longerC.thelongestBC21/22Homework:1.Tomemorizetheimportantphrasesandsentences.2.Tomakesomesentencesusingasas,.timesthan,lessthan,morethan22/22