八年级英语下册Unit7What’sthehighestmountainintheworld第1课时SectionA1a-2d人教新目标版.ppt

R八年级下册,Unit7,Whatsthehighestmountainintheworld?,SectionA第一课时1a-2d,Newwords,squaren.平方,metern.米,desertn.沙漠,populationn.人口,walln.墙,tourv.n.旅行,LanguageGoal:Talkaboutgeographyandnature,1a.Matchthefactsyouknow.,1a,Practice,Practiceinpairslikethis:A:Whichistheinthe?B:,1b.Listenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,1c.Usetheinformationin1btomakeconversations.,Whatisthehighestmountainintheworld?,Qomolangma.,2a.Listenandnumberthefacts(1-4)intheorderyouhearthem.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,1,2,3,4,2b.Listenagainandfillintheblanksin2awiththenumbersinthebox.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS.,6,300,5,464,2b,_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,5,000,300,2c.Makeconversationsusingtheinformationin2a.,DidyouknowthatChinaisoneoftheoldestcountriesintheworld?,Yes,Idid.itsmucholderthanmycountry.,Usetheinformationin2atoretellthestoryinaconversationbetweentheboyandaTVreporter.,DidyouknowthatYangtzeRiveristhelongestriverinChina?,Yes,Idid.Its6,300meterslong.,2d.Role-playtheconversation.,Guide:FeelfreetoaskmeanythingontodaysGreatWalltour.Tourist1:Howlongisthewall?Guide:Ah,themostpopularquestion!IfwereonlytalkingaboutthepartsfromtheMingDynasty,itsabout8,850kilometerslong.Thismakesitthelongestwallintheworld.Tourist2:Wow,thatsamazing!Whydidtheancientemperorsbuildthewall?,2d,Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee,itsquitetallandwide.AsfarasIknow,therearenoman-madeobjectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,itsthemostfamouspart.,Languagepoints,1TheSaharaisabout9,600,000squarekilometersinsize.square是可数名词，意为“平方；正方形”。square用于专有名词时,其前不加冠词。如：Askeachstudenttodraw16squaresonapieceofpaper.要求每个学生在纸上画16个正方形。Iwouldestimatethesizeofthegardenat100squaremetres.据我看,这花园总面积100平方米左右。,Languagepoints,2.TheCaspianSeais1,025metersdeep.（1）deep是形容词，意为“深的；纵深的”。如：Thisriverisabout6metersdeep.这河大约有六米深。Hispersonalityleftadeepimpressiononus.他的人品给我们留下了深刻的印象。,（2）meter是名词，意为“米；公尺”。如：Theboyisonemetertallinhisstockingfeet.这个小男孩不穿鞋的身高是一米。Itisamere100meterfrommyhousetothetheater.从我家到剧场只有一百公尺。,Languagepoints,3.Chinahasthebiggestpopulationintheworld.(1)population是集合名词，意为“人口；人口数量”，无复数形式，在句中作主语时，谓语动词用单数。但当population前有分数或百分数修饰时，用于指具体的人数，故作主语时，谓语动词要用复数形式。如：Thepopulationisgrowingfast。人口增长很快。Onefifthsofthepopulationhereareworkers。这儿有五分之一的人是工人。,Languagepoints,Languagepoints,4.ChinaisalmostasbigastheUs,butitisthebiggestcountryinAsia.（1）“as+形容词或副词的原级+as