英语人教版八年级下册Unit7 Section A ( 2a-2d）.ppt

Unit7,Unit7Whatsthehighestmountainintheworld?,SectionA12a-2d,学习目标：,1.知识目标：掌握大数的读法。2.技能目标：熟练使用形容词的比较级和最高级介绍你所知道的名胜。3.情感目标：培养学生积极参与课堂活动的兴趣，了解我国的悠久历史，灿烂文化和大好河山。,学习重难点：,1.继续学习大数的读法。2.正确运用形容词和副词的比较级和最高级。,预习提纲：,写出下列数的读法：6,300：5,000：5,464：300：8，850：,sixthousand,threehundred.,fivethousand.,fivethousand,fourhundredandsixty-four.,threehundred.,eightthousand,eighthundredandfifty.,教学过程：Step1、Whichisthehighestmountainintheworld?WhichisthelongestriverinAsia?.,Talkaboutthesepicturesinpairs.,Qomolangmaisthehighestintheworld.TheYangtzeRiveristhethirdlongestriverintheworld,thefirstAsianrivers.TheCaspianSeaisthedeepestofallsaltlakeintheworld.TheSaharaisthebiggestdesertintheworld.,Step2、2aListenandnumberthefacts(1-4)intheorderyouhearthem.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,4,2,1,3,2bListenagainandfillintheblanksin2awiththenumbersinthebox.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS.,6,300,5,464,_Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,butitisthebiggestcountryinAsia.,5,000,300,中国的长城共有近一万公里，东起河北秦皇岛的山海关，西到嘉峪关，这是明代修筑长城的两个最大关口，北京境内的长城有600余公里，比较著名的有八达岭长城、金山岭长城、司马台长城、慕田峪长城、居庸关长城和箭扣长城等。,TheGreatWall,Step3、小组合作讨论2d部分，找出知识点，并完成下列问题.,Guide：FeelfreetoaskmeanythingontodaysGreatWalltour.Tourist1：Howlongisthewall?Guide：Ah,themostpopularquestion!IfwereonlytalkingaboutthepartsfromtheMingDynasty,itsabout8,850kilometerslong.Thismakesitthelongestwallintheworld.,Tourist2:Wow,thatsamazing!Whydidtheancientemperorsbuildthewall?Guide:Themainreasonwastoprotecttheirpartofthecountry.Asyoucansee，itsquitetallandwide.AsfarasIknow,therearenoman-madeobjectsasbigasthis.Tourist3:IsBadalingpartoftheMingGreatWall?Guide:Yes,itsthemostfamouspart.,feelfreetodosth.themostpopularquestiontalkabouttheancientemperorsthemainreasonasfarasIknowasbigastheMingGreatWall,Importantphrasesandsentences.,2dReadtheconversationandanswerthequestions:,1.Whichisthebiggestman-madeobjectsintheworld？2.WhichisthemostfamouspartoftheMingGreatWall?,TheGreatWall.,Badalingpartofthewall.,达标检测：,（）1.TheNileis6,470_A.kilometersB.kilometerC.kilometerlongD.kilometerslong（）2.Shanghaiisoneof_intheworld.A.morebigcityB.thebiggestcityC.thebiggestcitiesD.themostbigcity（）3.-_isthemountain?-Itsabout1,600metershigh.A.HowhighB.HowlongC.HowfarD.Howold（）4.CanIuseyourcomputer,Rose?.A.Yourekidding.B.Yes,feelfree.C.Yourewe