人教版初中英语八年级下册Unit7SectionA1a2d课件

Unit7What’sthehighestmountainintheworld.?SectionA(1a-2d）1.能够听懂谈论“自然地理之最”的对话内容，并掌握物体长宽高及面积的表达等。2.能够掌握大数字的读法，并运用大数字和比较级、最高级谈论“自然地理之最”。3.通过反复听,能以角色扮演的形式，用正确的语音语调运用所学句型进行对话。Learninggoals4.能够了解我国和世界的一些“自然地理之最”，并通过对比加深对祖国的了解和热爱。Doyouliketravelingaroundtheworld?Doyouknowthem?Whichisthebiggestcontinentintheworld?Asia/'eɪʒə/亚洲Europe/ˈjʊərəp/欧洲Africa/'æfrɪkə/非洲Oceania/ˌəʊsiˈɑːniə/大洋洲SouthAmerica

南美洲NorthAmerica北美洲Asiaisthelargestcontinent.Let’senjoythebeautifulscenery.What'sthenameofthemountain?QomolangmaDoyouknowaboutQomolangma?Ithaslongbeenadreamandtargetofmanymountainclimbers.It'sbetweenNepalandChina.It'sthehighestmountainintheworld.DoyouknowhowhighQomolangmais?It'sabout8844.43metershigh.

Pre-listeningLet’senjoythebeautifulscenery.What'sthenameoftheriver?theNileDoyouknowabouttheNile?Ithastwomainbranches（主要的支流）.It'sthelongestriverintheworld.AllofthebranchesflowintotheMediterraneanSea.DoyouknowhowlongtheNileis?It'sabout6,671kilometerslong.

Pre-listeningLet’senjoythebeautifulscenery.What'sthenameofthelake?theCaspianSeaDoyouknowabouttheCaspianSea?It'ssurrounded（包围）byfivecountries.Itforms40to44%ofthetotallakewatersoftheworld.It'sthelargestland-locked（内陆）bodyofwaterontheearth.DoyouknowhowdeeptheCaspianSeais?It'sabout1,025metersdeep.

Pre-listeningLet’senjoythebeautifulscenery.What'sthenameofthedesert?theSaharaDoyouknowabouttheSahara?ItcoversmorethanonefifthoftheEarth'sland.It'sontheAfricancontinent.It'sthebiggesthotdesert.DoyouknowhowbigtheSaharaisinitssize?It'sabout9,600,000squarekilometersinsize.

Pre-listening

Pre-listeningHowtoreadthelargenumbers?9,600,0001,0256,6718,848.86

百百万

千十亿twobillionandsixty-fivemillion,sixhundredandninethousand,ninehundredandeightypointthreefour.点billionmillionthousandhundredpoint2,065,609,980.34billionmillionthousandpointthreefourand

Pre-listening小窍门自右向左三逗分；一逗千(thousand)二逗百万(million)三逗十亿(billion)左右三位分开读；百位十位and连。这种方法你喜欢？读时，将每三位数看做一个单位，自右向左依次为thousand千，million百万，billion十亿。每个单位按百、十、个位向右读。其中百位到十位之间要加入and。小数点读point。Howtoreadthelargenumbers?

Pre-listening7,742.331,390,000,0003,563,1292,000,060,000threemillion,fivehundred

andsixty-threethousand,onehundred

andtwenty-nine.onebillion,threehundred

andninetymillion.seventhousand,sevenhundred

andforty-twopointfourthree.twobillion

and

sixtythousand.Canyoureadthelargenumbers?

Pre-listening9,600,0001,0256,6718,848.86sixthousand,sixhundredandseventy-one.onethousandandtwenty-five.ninemillion,sixhundredthousand.eightthousand,eighthundredandforty-eightpointeightsix.Trytoreadthem.

Pre-listeningHowhighisQomolangma?It's

8,844.43metershigh.HowdeepistheCaspianSea?It's

1,025metersdeep.HowlongistheNile?It's6,671kilometerslong.HowbigistheSahara?It's

about9,600,000squarekilometersinsize.Conclusion:询问长、宽、高、深、面积的表达方法问句：_____+_______________________________________+___+____?答句一：____+___+______+______+__________________________。How形容词(long/wide/high/deep/big…)be主语主语be基数词单位词形容词(long/wide/high…)Howtoaskandanswer?

Pre-listeningIt's8,844.43metersinheight.It's1,025metersindepth.It's6,671kilometersinlength.Expansionwide的名词形式为widthIt's

8,844.43metershigh.It's

1,025metersdeep.It's6,671kilometerslong.It's

about9,600,000squarekilometersinsize.Conclusion:询问长、宽、高、深、面积的表达方法问句：_____+_______________________________________+___+____?答句二：____+___+______+______+____+_____________________。How形容词(long/wide/high/deep/big…)be主语主语be基数词名词(size/length/…)单位词inHowtoaskandanswer?

Pre-listeningMatchthefactsyouknow.1aQomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh

Pre-listeningPredictandtrytocompletethesentencesin1b.1.Qomolangmais_______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis___________riverintheworld.“世界之最”Listenandcompletethesentences.1bWhile-listening1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongest比其他任何山都高=最高=Qomolangmaisthehighestmountainintheworld.总结：形容词比较级+thananyother+单数名词=最高级+单数名词。Teacher:Yesterday,welearnedsomeimportantgeographicalfacts.Ihopeyouallstillrememberthem.I'mgoingtotestyounowbyaskingafewquestions.First,what'sthehighestmountainintheworld?Boy1:Qomolangma!It'shigherthananyothermountainintheworld.Teacher:That'sright.AndwhocantellmewhattheSaharais?Girl1:TheSaharaisthebiggestdesertintheworld.Teacher:Verygood.Andwhichisthedeepestsaltlakeintheworld?地理事实ListenandreadabloudWhile-listeningListenandreadabloudGirl2:TheCaspianSeaisthedeepestofallthesaltlakes.Teacher:You'reallsosmart!Now,forthelastquestion,whichisthelongestriverintheworld?Boy2:Iknow!TheNileisthelongestriverintheworld.Boy1:AndtheAmazonisthesecondlongestriverintheworld.Teacher:Itseemsthatyouknowtheanswerstoallmyquestions.Goodjob!“the+序数词+最高级+单数名词+in…”表示“是……中的第几……”While-listeningQomolangmaishigherthananyothermountainintheworld.该结构意为“比其他任何一个……都……”，指同一范围内比较，表示最高级含义。Sheisthinnerthananyotherstudentinherclass.=Sheisthethinnestinherclass.other必不可少，用以将主语从比较对象中排除，避免逻辑矛盾。比较级+thananyother+可数名词单数LanguagepointsLet’slearnLanguagepoints【特别提醒】如果比较对象不在同一范围内或不属于同一类别，应用“形容词/副词比较级+thanany（任何的）

+可数名词单数”。ThePacificOceanislargerthananylakeintheworld.练一练Hulunbuirisbiggerthan_____________cityinChina.Hulunbuirisbiggerthan_____________cityinAnhui.anyotheranyLet’slearnUsetheinformationin1btomakeconversations.1c

Pre-listeningQomolangmaWhatisthehighestmountainintheworld?Qomolangma

Pre-listeningQuize Howmuchdoyouknowaboutourcountry?1.HowlongisthehistoryofChina?2.WhatsizeisChina?3.WhatisthepopulationofChina?4.HowlongistheYangtzeRiverandtheYellowRiver?Chinahasahistoryofmorethan5000years.About9,600,000squarekllometersinsize.It

has

apopulationof1,400,000,000.TheYangtzeRiverisabout6,300kilometerslong.theYellowRiverisabout5,464kilometerslong.Listenandnumberthefacts[1-4]intheorderyouhearthem.2a___TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.___Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.___ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.6,3005,0005,4643004213长江While-listeningListenagainandfillintheblanksin2awiththenumbersinthebox.2b___TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.___Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.___ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.6,3005,0005,4643004213长江6,3005,4645,000300alot和much可修饰比较级。as...as...和...一样（同级比较）While-listeningLanguagepoints 3.Chinahasthebiggestpopulationintheworld.①populationn.人口；人口数量。是集体名词，在句中作主语时，谓语动词用单数形式。population之前若有分数修饰做主语时,谓语动词则可用复数形式.

中国人口有17亿多。ThepopulationofChinaisover1.7billion.这儿大约有五分之三的人口是农民。Aboutthreefifthsofthepopulationherearefarmers.Let’slearnLanguagepoints ②表示有多少人口时，用“have/hasapopulationof+数词”，或“thepopulationof…is+数词”。Chinahasapopulationofabout1.4billion.=ThepopulationofChinaisabout1.4billion.③询问人口多少时，用“Whatisthepopulationof…?”或“Howlargeisthepopulationof…?”。What/HowlargeisthepopulationofHenanProvince?Let’slearnLanguagepoints ④表示人口多少时，用big/large或small修饰，而不能用many，much或few等。Indiahasalargepopulation.类似的，表示price（价格）高低，用high或low，不能用expensive或cheap；表示temperature（温度）高低，用high或low，不能用hot或cold。Let’slearnListenandreadabloudMike：Hi,I’mMike.I’mfromtheUnitedStates.Boy：Welcometoourclass,Mike.We’rehappytomeetyou.Mike：CanyoutellmeabitmoreaboutChina?Girl：Sure!DidyouknowthatChinaisoneoftheoldestcountriesintheworld?It’sover5,000yearsold.Mike：Yes,Idid.It’smucholderthanmycountry—infact,theUnitedStatesisoneoftheyoungestcountriesintheworld.It’snoteven300yearsold.

Post-listeningListenandreadabloudBoy：AndChinahasthebiggestpopulation,too.It’salotbiggerthanthepopulationoftheUnitedStates.Mike：ButChinaisaboutthesamesizeastheUS,right?Girl：Yes,andit’sthebiggestcountryinAsia.Wealsohavesomefamousrivers.TheYangtzeRiveristhelongestriverinAsia.It’sabout6,300kilometerslong.Mike：Wow!Ididn’tknowthat.IthoughttheYellowRiverwaslonger.Boy：No,theYellowRiveris5,464kilometerslong.ButbothriversareveryimportanttoChina.

Post-listeningMakeconversationsusingtheinformationin2a.2cHistoryoneoftheoldestcountries;over5,000yearsoldoneoftheyoungestcountries;noteven300yearsoldPopulationthebiggestpopulationintheworld/AreathebiggestcountryinAsiaasbigasChinaRivertheYangtzeRiver;theYellowRiver/Practiceinpairslikethis:A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.It’smucholderthanmycountry.

Post-listeningGuide:

toaskmeanythingontoday'sGreatWalltour.Tourist1:

isthewall?Guide:Ah,themostpopularquestion!Ifwe'reonly

thepartsfromtheMingDynasty,it'sabout8,850kilometerslong.This______itthelongestwallintheworld.Tourist2:Wow,that'samazing!Whydidtheancientemperorsbuildthewall?

Guide:The

wastoprotecttheirpartofthecountry.__________

_________,it’squitetallandwide.

,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadaling

theMingGreatWall?Guide:Yes,it'sthemostfamouspart.FeelfreeHowlongtalkingaboutmakesmainreasonAsyoucanseeAsfarasIknowpartofFillintheblanksaccordingtotheconversation.

Post-listeningGuide:Feelfreetoaskmeanythingontoday'sGreatWalltour.Tourist1:Howlongisthewall?Guide:Ah,themostpopularquestion!Ifwe'reonlytalkingaboutthepartsfromtheMingDynasty,it'sabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Tourist2:Wow,that'samazing!Whydidtheancientemperorsbuildthewall?

（可以）随便（做某事）,其后接动词不定式。n.&v.旅行；旅游

n.墙

adj.令人大为惊奇的；令人惊喜（惊叹）的

adj.古代的；古老的

n.旅行者；观光者Role-playtheconversation.2d

Post-listeningRole-playtheconversation.2dGuide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it'squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,it'sthemostfamouspart.

v.保护；防护

adj.宽的；宽阔的

adj.人造的不定式短语作表语

Post-listening

GroupworkHowmuchdoyouknowaboutChina?FactsaboutChinaSize≈___________km²MountainhighestQomolangma(8,844.43m)RiverlongestLakebiggestDesertlargestSquarebiggestCitylargest…TodaywetalkedaboutthegeographicalfactsaboutChina.Chinais…squarekilometersinsize.Thehighestmountain…is…It’s…metershigh.It’shigherthananyothermountain…IloveChina.Thankyouforyourlistening.

Post-listeningReport1.长、宽、高、深、面积的表达方法基数词+单位词+形容词（long,wide,high,deep等）基数词+单位词+in+名词（length,width,height,depth,size等）eg：Itisabout100meterslongfrommyhousetothetheater.

从我家到剧场大约100米。Thewellisabout5metersdeep.这口井大约5米深。Thisruleris20centimeterlong.这把尺子有20厘米长。=Thisruleris20centimeterinlength.Thegiraffeisthreefeethigh.=Thegiraffeisthreefeetinheight.

长颈鹿有三英尺高。Let’slearn2.Qomolangmaishigherthananyothermountainintheworld.“anyother+可数名词的单数”，意为“任何其他的”❶anyother“其他任何一个”，后接可数名词单数；指在同一范围内除了某人