Unit7KnowOurWorldLesson38TheWorldIsaBigPlace1

學(xué)習(xí)目標(biāo)2

新課導(dǎo)入3

新課講解

4

當(dāng)堂小練5

課堂小結(jié)目錄contentsLearnmoreabouttheworld’sgeography.MasterthewordsandexpressionsofthecontinentsandoceansinEnglish.學(xué)習(xí)目標(biāo)思考Allofushavestudiedgeography.Canyousaythenamesofthecontinentsandoceansintheworld?新課導(dǎo)入THINKABOUTIT·Howmanycontinentsarethereintheworld?Whatarethey?·Whatdoyouknowabouttheplacewhereyoulive?新課講解Howmanycontinentsandoceansdoestheworldhave?Canyoupointthemout?Theearthisaveryspecialplanet,anditfacesabigproblem.Intheyear2010,theworld’spopulationwasover7billionintotal.Itisincreasingveryquickly.By2025,theworldmayhaveabout8billionpeople.Andby2050,theworld’spopulationmayreach9billion.Thereisanotherproblem.Peoplecan’tliveeverywhereontheearth.Wecan’tliveinwater,andonlyaboutonethirdofourplanetisland.Butpartsofthislandareverydry.Thesedryplacesarecalleddeserts.Someareashaveveryhighmountains.Othershavealotofsnowandice.Itisnoteasytoliveinthoseplaces.Therearesevencontinents:Asia,Africa,Australia,Antarctica,Europe,NorthAmericaandSouthAmerica.Antarcticaiscoveredwithsnowandiceallyearround.Luckily,peoplecanliveontheothersixcontinents.Onthesecontinents,therearegreenforests,freshwaterandrichlands.Oceanscovertwothirdsoftheearth'ssurface.Theearthhasonlyonebigocean,butweusethesenamesforitsdifferentparts:thePacificOcean,theIndianOcean,theAtlanticOceanandtheArcticOcean.ThePacificOceanisthelargestone.Theearthisourhomenow,anditwillbeourhomeinthefuture.Itmustbetreatedwellforourchildrenandforourchildren'schildren,too！Languagepoint1Theearthisaveryspecialplanet,anditfacesabigproblem.planet/pl?n?t/n.

行星planet為可數(shù)名詞，指環(huán)繞恒星運(yùn)轉(zhuǎn)的星球。e.g.Theearthistheonlyplanetthatweknowhaslifeatpresent.地球是目前我們所知的唯一有生命存在的行星。Languagepoint2Intheyear2010,theworld’spopulationwasover7billionintotal.billion/b?l??n/n．十億；千兆billion前有數(shù)詞修飾時(shí)，billion不能用復(fù)數(shù)形式。e.g.Wewanttwobillion.我們想要20億。billionsof意為“數(shù)十億的”，表示不確定的數(shù)量。e.g.Therearebillionsofstarsinthesky.天上有數(shù)十億的星星。Languagepoint3Itisincreasingveryquickly.increase既可作及物動(dòng)詞也可作不及物動(dòng)詞，其反義詞為decrease。也可作名詞，常用短語ontheincrease“正在增加；不斷增長”。e.g.Thesecasesareontheincrease.這些案件在不斷增加。e.g.Hispowerincreased.他的權(quán)利加強(qiáng)了。increase/?n'kri?s/v.增加；增大Languagepoint4Antarcticaiscoveredwithsnowandiceallyearround.主動(dòng)結(jié)構(gòu)為：cover...with...(用……蓋住……)e.g.Pleasecoverthisdeskwithacloth.請用布蓋住這張課桌。becoveredwith

被……覆蓋e.g.Ourgardeniscoveredwithgrassandflowers.我們的花園被花草覆蓋著。1Readthelessonandmatcheachparagraphwithitsmainidea.Let'sDoIt!Paragraph1

a.Sixofthesevencontinentsaregoodforpeopletoliveon.Paragraph2b.Weshouldtreattheearthwell.Paragraph3c.Anincreasingpopulationisabigproblemfortheearth.Paragraph4d.Twothirdsoftheearthiscoveredwithoceans.Paragraph5e.Peoplecannotliveeverywhereontheearth.Fillintheblankswiththecorrectformsofthewordsinthebox.increasedrysurfacebilliontotal1．Thenumberofswimmershereis__________quicklybecauseit’sveryhotthesedays.2．Theschoolhasa________of900students.3．Ithinkitmaybethe________seasonoftheyear.4．The________ofourbodyisskin.Itprotectsus.5．Howmany________ofpeoplearethereintheworldnow?increasingtotal

driestsurfacebillions2一、詞語運(yùn)用1.Thes________ofthelakeisquitestill.2.Thet________costwillbe130dollars.3.Theearthisap________anditgoesaroundthesun.4.TheycomefromIndia,andtheyareI________.5.Thenumberofwildpandashasi________byaround17%inthelasttenyears.urfaceotallanetndiansncreased當(dāng)堂小練二、連詞成句1.planet,earth,is,special,the,a__________________________________________________.2.in,we,live,water,can't__________________________________________________.TheearthisaspecialplanetWecan'tliveinwater3.deserts,dry,called,these,places,are__________________________________________________.4.must,earth,well,the,treated,be__________________________________________________.5.cover,surface,thirds,the,oceans,two,earth's,of__________________________________________________.ThesedryplacesarecalleddesertsTheearthmustbetreatedwellOceanscovertwothirdsoftheearth'ssurface重點(diǎn)單詞：increase