英语人教版八年级下册Unit7_SectionA.ppt

初中英语人教版八年级下Unit7 Whats the highest mountain in the world?SectionA（GrammarFocus-4c）Review1Presentation2Exercise3LiuXiangistallerthanZhouJielun.ZhouJielunistall.YaoMingisthetallestofthem.姚明刘翔周杰伦Look and sayWhatsthe_mountainintheworld?(high)Qomolangma.HowhighisQomolangma?Its8,844.43metershigh.Its_thananyothermountain.(high)highesthigherReviewFillintheblanks.Whichisthe_(deep)saltlakeintheworld?TheCaspianSeaisthe_ofallthesaltlakes.(deep)DidyouknowthatChinaisoneofthe_(old)countriesintheworld?Yes,Idid.Itsmuch_(old)thantheUS.deepestdeepestoldestolderPresentation一、构成规则原级比较级最高级（1）一般单音节词在词尾加-er和-estlongfastlongerfasterlongestfastest（2）以“e”结尾的单音节词在词尾加-r和-stnicelatenicerlaternicestlatest规则变化规则变化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，须双写最后一个辅音字母，再加-er或-estbighotsadgladbiggerhottersaddergladderbiggesthottestsaddestgladdest（4）辅音字母+y结尾，变y为i，再加-er和-estheavyangryfunnyheavierangrierfunnierheaviestangriestfunniest规则变化规则变化不规则变化不规则变化原级比较级最高级good/well好的better更好的best最好的bad差的，ill坏的worse更差的；更坏的worst最差的；最坏的many/much多的more更多的most最多的little少的less更少的least最少的不规则变化不规则变化原级比较级最高级old年老的；古老的older较老的；较旧的oldest最老的；最旧的；最年长的elder年长的eldest最年长的far远的farther（指距离）更远的farthest（指距离）最远的further（指距离和抽象概念）较深远的furthest（指距离和抽象概念）最深远的二、常见用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.我们的学校是他们的三倍大。用法例句(1)双方比较，表示一方超过另一方时，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.这个箱子是那个的三倍大。比较级比较级用法例句(4)“比较级+and+比较级”表示“越来越”Ourcountryisbecomingstrongerandstronger.我们的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，较高的那一个是我的哥哥。比较级比较级用法例句(1)the+形容词最高级+名词+表示范围的短语或从句Springisthebestseasonoftheyear.春天是一年中最好的季节。(2)“oneofthe+最高级+复数名词”表示“最之一”Kobe is one of the bestbasketball players in NBA.科比是NBA最好的篮球运动员之一。最高级最高级1.Ourfamilyhasboughtacarsowecantravel_thanbefore.A.mosteasilyB.lesseasilyC.easilyD.moreeasily2.Myfathertoldmeastorylastnight.Itis_oneIveeverheard.A.thefunniestB.funniestC.funnierD.thefunnierDA活学活用活学活用3.The_friendsyouhave,the_youwillbe.A.more,happyB.many,happyC.more,happierD.many,happier4.Whenheheardacryforhelp,heranoutas_ashecould.A.hardlyB.quicklyC.finallyD.slowlyCBFillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_riversintheworld.Itsalittle_thantheYangtzeRiver.2.Qomolangmais8,844.43meters_.Itsoneofthemost_placesforseriousmountainclimbers.longestlongerhighpopular4a3.Nooceanintheworldisas_asthePacificOcean.4.AlthoughJapanis_thanCanada,itis_smaller.bigoldermuchWritetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:_and_TheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.theYangtzeRivertheAmazonRiver4b1.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.thebestAAExerciseD4.Whichis_,thesun,themoonortheearth?Themoon.A.smallB.smallerC.smallestD.thesmallest5.IstudyEnglishas_asmybrother.A.hardB.harderC.hardestDA7.Whichis_,abicycleoracomputer?A.expensiveB.moreexpensiveC.themostexpensive8.TheYellowRiverisoneof_riversinChina.A.longB.longerC.thelongestBCHomework:1.Tomemorizetheimportantphrasesandsentences.2.Tomakesomesentencesusingasas,.timesthan,lessthanandmorethan.