Unit7SectionA1a2d課件人教版英語八年級下冊

Unit7What’sthehighestmountainintheworld?SectionA1a-2dDoyouknowthesemountains?黃山MountHuangMountTai泰山MountLu廬山9,600,0001,0256,6718,844.43Canyoureadtheselargenumbers?

sixthousandsixhundredandseventy-oneonethousandandtwenty-fiveninemillionsixhundredthousandeightthousandeighthundredandforty-fourpointfourthree1,034,507,890.12Howtoreadlargenumbers?

pointthousandmillionbillionandandonetwo9,600,000squarekilometers/km2

insizeWhatgeographicalsites

arethenumbersabout?8,844.43metershighQomolangma1025theCaspianSeametersdeeptheNile6,671kilometerslongtheSaharatheNileQomolangmatheCaspianSeatheSahara珠穆朗瑪峰是世界海拔最高的山峰，高度為8844.43米。Qomolangmaeightthousandeighthundredandforty-fourpointfourthreeWhichisthehighestmountainintheworld?theNile尼羅河長6671千米，是世界上最長的河流。sixthousandsixhundredandseventy-oneWhichisthelongestriverintheworld?theCaspianSea里海雖稱海，卻是一個巨大的內(nèi)陸咸水湖，深1025米，是世界上最大的湖泊onethousandandtwenty-fiveWhichisthebiggestlakeintheworld?theSahara形成于約250萬年前，世界上最大的沙質(zhì)荒漠，約9,600,000平方千米ninemillionsixhundredthousandWhichisthebigestdesertintheworld?Matchthefactsyouknow.1aQomolangmatheNiletheCaspianSeatheSaharaQomolangmaTheNileTheCaspianSeaTheSaharaabout9,600,000squarekilometersinsize1,025metersdeep6,671kilometerslong8,848.86metershighheightlengthdepthareahighest/tallestlowest/shortestlongestshortestdeepestshallowestbiggestsmallestFeatureMostLeastMountainRiverSea/LakeDesertFillinthetable.1bListenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis____________riverintheworld.higherthebiggestthedeepestthelongestListenandread.Teacher:Yesterday,welearnedsomeimportantgeographicalfacts.Ihopeyouallstillrememberthem.I'mgoingtotestyounowbyaskingafewquestions.First,what'sthehighestmountainintheworld?Boy1:Qomolangma!It'shigherthananyothermountainintheworld.Teacher:

That'sright.AndwhocantellmewhattheSaharais?Girl1:TheSaharaisthebiggestdesertintheworld.Teacher:Verygood.Andwhichisthedeepestsaltlakeintheworld?地理事實Girl2:TheCaspianSeaisthedeepestofallthesaltlakes.Teacher:

You'reallsosmart!Now,forthelastquestion,whichisthelongestriverintheworld?Boy2:Iknow!TheNileisthelongestriverintheworld.Boy1:AndtheAmazonisthesecondlongestriverintheworld.Teacher:Itseemsthatyouknowtheanswerstoallmyquestions.Goodjob!the+序數(shù)詞+形容詞最高級第幾……的Hi,Patrick!Whatareyoudoingthesedays?Oh,Iamtravelingaroundtheworld.Howexciting!Whatisthehighestmountainintheworld?It’sQomolangma.HowhighisQomolangma?It's8,844.43metershigh.Usetheinformationin1btomakeconversations.1cQomolangmatheNiletheCaspianSeatheSaharaReadthenumbers.6300sixthousandandthreehundred50005465300fivethousandfivethousand,fourhundredandsixty-fivethreehundred2a____TheYangtzeRiverisabout________kilometerslongandtheYellowRiveris__________kilometerslong.____Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.Listenandnumberthefacts[1-4]intheorderyouhearthem.246,300 5,0005,464 300____Chinaisover________yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_______yearsold.____ChinaisaboutthesamesizeastheUS,anditisthebiggestcountryinAsia.136,300 5,0005,464 3002bListenagainandfillintheblanksin2awiththenumbersinthebox.___TheYangtzeRiverisabout______kilometerslongandtheYellowRiveris______kilometerslong.___Chinahasthebiggestpopulationintheworld.It’salotbiggerthanthepopulationoftheUS.6,3005,4646,300 5,0005,464 3006,300 5,0005,464 300___Chinaisover______yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_____yearsold.___ChinaisaboutthesamesizeastheUS,anditisthebiggestcountryinAsia.5,000300Listenandread.Mike：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.Boy：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.Readtheconversationin2dandanswerthequestions.1.Whatistheconversationabout?It’saboutatourtotheMingGreatWall.2.HowlongistheMingGreatWall?It’sabout8,850kilometerslong.3.Whatdoestheguidesayaboutthewall?It’squitetallandwide.It’sthelongestwallintheworld.Therearenoman-madeobjectsasbigasthis.

…Fillintheblanks.Guide:

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.FeelfreeHowlongtalkingaboutmakesmainreasonAsyoucanseeAsfarasIknowpartofFeelfreetoaskmeanythingontoday’sGreatWalltour.2dRole-playtheconversation.Howlongisthewall?Ah,themostpopularquestion!Ifwe’reonlytalkingaboutthepartsfromtheMingDynasty,it’sabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,it’squitetallandwide.AsfarasIknow,therearenootherman-madeobjectsasbigasthis.Wow,that’samazing!Whydidtheancientemperorsbuildthewall?Yes,it’sthemostfamouspart.IsBadalingpartoftheMingGreatWall?=sofarasIknow就我所知Exercises一、單項選擇。1.—______isthepopulationofChinanow,Jack?—Letmethinkforamoment;itisabout______.A.Howmany;1,400million B.What;1,400millionC.What;140million D.Howmany;140million2.—The5Gtechnologycanhelpdoctorstreatpatientswho