公开课八年级下册英语第七单元第一课时.ppt

Ourtaskstoday,TalkaboutgeographyandnatureReadnumbers.Eg:9,600,000Comparativeandsuperlativedegree比较级和最高级,Ourhomeland,China.,Chinahasthelongestwall,Chinahasthethirdlongestriver,Chinahastheriverwhichhasthemostsand,Chinaisthethirdbiggestcountry,Chinahaslargerpopulationthananyothercountry.,theGreatWall.,theYangtzeRiver.,theYellowriver.,9,600,000squarekilometersinsize.,1,300,000,000,Period1,Unit7Whatsthehighestmountainintheworld?,Letstalk!,Whatdowelearninageographyclass?,geography,Qomolangma,mountain,TheNile,river,theCaspianSea,saltlake,TheSahara,desert,thePacificOcean,ocean,Geographicalfacts地理常识,thelongestriver,(has)thebiggestpopulation,thehighestmountain,thebiggestcountry,thebiggestdesert,thebiggestsaltlake,thebiggestocean,thebiggestcontinent,1.TheNile2.TheAmazonRiver3.YangtzeRiver,RussiaCanadaChina,TheSahara,TheCaspianSea,Asia,ThePacificOcean,China,Qomolangma,di:rfkl,Geographicalfacts地理常识,thelongestriver,hasthebiggestpopulation,thehighestmountain,thebiggestcountry,thebiggestdesert,thebiggestsaltlake,thebiggestocean,thebiggestcontinent,-Whatsthelongestriverintheworld?-TheNile.,Pairwork,8,844metershigh,6,671kilometerslong,1,025metersdeep,9,600,000squarekilometersinsize,Qomolangma,theCaspianSea,TheSahara,TheNile,Letsreadnumbers,2.3451656,671600,0009,600,0001,300,000,000,twopointthree,forty-five,onehundredandsixty-five,sixthousandsixhundredandseventy-one,sixhundredthousand,ninemillionsixhundredthousand,onebillionthreehundredmillion,billion十亿,million百万,thousand千,111,121,435,678111,121,435,678,onehundredandelevenbilliononehundredandtwenty-onemillionfourhundredandthirty-fivethousandsixhundredandseventy-eight,十亿的读法,Readthenumber!,4,69826,471,904,75827,6449,237,5865.4176,934,524,456389298,50328,596,73890,Groupwork:Writedownsomenumbersandaskyourgroupmatestoreadit.No.1-No.4No.2-No.3,2米长1米宽150米高1125米深1.5米厚9,600,000平方公里,twometerslong,onemeterwide,onehundredandfiftymetershigh,onethousandonehundredandtwenty-fivemetersdeep,onepointfivemetersthick,数词+单位+形容词(long,wide,high,deep,thick)面积：数词+单位+insize,ninemillionsixhundredthousandsquarekilometersinsize,1bListenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,anyother+n单数,比较级,1.Myhairislongerthan_.她2.Theweatherisgetting_and_(warm)3.The_(old)Iget,the_(weak)Iseemtofeel.4.Qomolangmaishigherthananyother_intheworld.(山)5.Itsraining,anditismuch_.(cold),hers,warmer,warmer,older,weaker,mountain,colder,比较前后一致,比较级and比较级：越来越,the比较级，the比较级：越越,比较级表示最高级,much,alot,alittle,abit,even+比较级,最高级,1.Summeris_(hot)seasonoftheyear.2.TheChangjiangRiverisoneof_intheworld.A.thelongestriverB.longestriversC.thelongestriversD.longerriv