Unit7 sectionA 1a-2c课件2022-2023学年人教版英语八年级下册

Unit7What'sthehighestmountainintheworld?SectionA11a—2cPresentationsquaren.平方metern.米deepadj.深的desertn.沙漠populationn.人口Asian.亚洲Howmanywordsdoesthebookhave?858,000663

sixhundredandsixty-three858,000

eighthundredandfifty-eightthousand858,000,000

eighthundredandfifty-eightmillion858,000,000,000

eighthundredandfifty-eightbillion6,3006,6718,844.431,025337,6009,600,0009,634,0571,377,960,299Canyoureadthesenumbers?A:What’sthisnumber?B:It’s___,_

__,___,_

__pointbillionmillionthousand8,844.43Qomolangmarunsalongtheborder(边境）betweenChinaandNepal（尼泊尔）.Itiscoveredwithsnowallyearround.It’s8844.43metershigh.It’sthehighestmountainintheworld.

Qomolangmaismetershigh.HeightQomolangmaDoyouknowtheseinterestplaces?TheNile

isthelongestriverintheworld.It’smorethan6600kilometers

long.Itrunsthrough11countries.

6,671TheNileiskilometerslong.Lengh长度TheNileTheCaspianSeaTheCaspianSeaisactuallynotaseabutinsteadasaltlake.It’sthedeepestofallthesaltlakes.It’s1,025metersdeep.Itliesintheborder(边境)betweenAsiaandEurope.

1,025Depth深度TheCaspianSeais

metersdeep.TheSaharaisthebiggesthotdesertintheworld.It’sabout9,600,000square

kilometersin

size.ItisinthenorthernAfrica.TheSahara9,600,000TheSaharaisaboutsquarekilometersinsize.Area面积squarekilometer=kmsquaremeter=m22度量单位使用规律Qomolangmais

8,844.43metershigh.TheNileis6,671kilometerslong.TheCaspianSeais

1,025metersdeep.TheGreatWallisabout6meters

wide.TheSaharaisabout9,600,000squarekilometersinsize.

（1）表示长宽高深时：数词+meters/kilometers+high/deep/long/wide数词+量词+表示长宽高深的形容词表示面积时：数词+squarekilometers/meters+insize数词+量词+insize（2）提问方式：How+high/deep/long/wide…+be+主语？e.g.HowhighisQomolangma?表示面积时：How+big…+be+主语?What’sthesize/areaof+主语？e.g.HowbigistheSahara?What’sthesize/areaoftheSahara?8,844.43mA:How

highis…?B:It’s…meters

high.

Pairwork:Askandanswerabouttheheight.Qomolangma6,671kmTheNilePairwork:Askandansweraboutthelength.A:How

longis…?B:It’s…kilometers

long.1,025mTheCaspianSeaPairwork:Askandansweraboutthedepth(深度).A:How

deepis…?B:It’s…meters

deep.TheSaharaPairwork:Askandansweraboutthearea(面积).A:How

bigis…?/What’s

thesize/areaof…?B:It’s…squarekilometers

insize.337,600km9,600,000kmTaklimakanDesert221bListenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongestthehighestPairworkForexample:A:MayIaskyousomequestions?B:Sure.A:What/Whichisthe…intheworld?B:…isthe…A:Howhigh/big/long/deepisit?B:It’s…2cMakeconversationsusingtheinformationin2a.A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.it’smucholderthanmycountry.PracticeA:DidyouknowthatYangtzeRiveristhelongestriverinChina?B:Yes,Idid.It’s6,300meterslong.B:Wow!That’slong!SummaryWhat’sthehighestmountainintheworld?It’s…Howhighisit?It’s