欢迎来到天天文库
浏览记录
ID:38306085
大小:4.95 MB
页数:15页
时间:2019-06-08
《《Unit 7 Lesson 38》(冀教版)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
此文档下载收益归作者所有