《Unit 7 Lesson 38》（冀教版）

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1、Unit7KnowOurWorldLesson38TheWorldIsaBigPlaceThinkaboutit!•Howmanycontinentsarethereintheworld?Whatarethey?•Whatdoyouknowabouttheplacewhereyoulive?Howmanycontinentsarethereintheworld?Whatarethey?AfricaAsiaEuropeOceaniaAntarcticaSevenContinentsNorthAmericaSouthAmericaThePacificOce

2、anTheIndianOceanTheAtlanticOceanTheArcticOceanOceanscoveraboutthree-quartersoftheearth’ssurface.desertDesertscovertwentypercentoftheearth’ssurface.What’stheworld’sbiggestisland?Theworld’sbiggestislandisGreenland.GreenlandisnortheastofCanada.GreenlandWords&expressionsListenandrea

3、d.Theearthisaveryspecialplanet,anditfacesabigproblem.Intheyear2010,theworld’spopulationwasover7billionintotal.Itisincreasingveryquickly.By2025,theworldmayhaveabout8billionpeople.Andby2050,theworld’spopulationmayreach9billion.Thereisanotherproblem.Peoplecan’tliveeverywhereontheea

4、rth.Wecan’tliveinwater,andonlyaboutonethirdofourplanetisland.Butpartsofthislandareverydry.Thesedryplacesarecalleddeserts.Someareashaveveryhighmountains.Othershavealotofsnowandice.Itisnoteasytoliveinthoseplaces.Therearesevencontinents:Asia,Africa,Australia,Antarctica,Europe,North

5、AmericaandSouthAmerica.Antarcticaiscoveredwithsnowandiceallyearround.Luckily,peoplecanliveontheothersixcontinents.Onthesecontinents,therearegreenforests,freshwaterandrichlands.Oceanscovertwothirdsoftheearth’ssurface.Theearthhasonlyonebigocean,butweusethesenamesforitsdifferentpar

6、ts:thePacificOcean,theIndianOcean,theAtlanticOceanandtheArcticOcean.ThePacificOceanisthelargestone.Theearthisourhomenow,anditwillbeourhomeinthefuture.Itmustbetreatedwellforourchildrenandforourchildren’schildren,too!Languagepoints