Unit 7 Know Our World Lesson 38 The World Is a Big Place教学课件【八年级英语下册（冀教版）】

Unit7KnowOurWorldLesson38:TheWorldIsaBigPlaceTounderstandthetextTousethewordscorrectly:intotalonethirdbecoveredwith…twothirdsObjectivesplanetbilliontotalintotalincreasesurfaceIndiann.

行星n.

十亿；千兆n.

总计；总数adj.

总的；总计的总计；合计；总共v.

增加；增大n.

表面；表层adj.

印度的n.

印度人AtlanticArcticonethirdtwothirdsbecoveredwith…n.&adj.

大西洋(的)n.&adj.

北极的三分之一三分之二被……覆盖Howmanypeoplearethereintheworld?Largepopulation1.Intheyear2010,theworld’spopulationwasover__________.7billion3.By_____,theworld’spopulationmayreach9billion.2.By_____,theworldmayhaveabout8billionpeople.20252050AfricaAsiaNorthAmericaEuropeOceaniaAntarcticaSevenContinents(洲)SouthAmericathePacificOceanthePacificOceantheAtlanticOceantheIndianOceantheArcticOceanFourmainOceans(海洋)大西洋太平洋太平洋印度洋北冰洋1.Thereare________continentsintheworld.Theyare______________________________________________________________________.2.Thereare______mainoceansintheworld.Theyare_____________________________________________________________________.sevenfourAsia,Europe,Africa,NorthAmerica,SouthAmerica,OceaniaandAntarcticatheAtlanticOcean,theIndianOceanandtheArcticOceanthePacificOcean,Whichcontinentiscoveredwithsnowandiceallyearround?AntarcticaThePacificOceanWhat’stheworld’slargestocean?ReadingReadthelessonandmatcheachparagraphwithitsmainidea.Para.1Para.2Para.3Para.4Para.5Sixofthesevencontinentsaregoodforpeopletoliveon.Weshouldtreattheearthwell.Anincreasingpopulationisabigproblemfortheearth.Twothirdsoftheearthiscoveredwithoceans.Peoplecannotliveeverywhereontheearth.LanguagePoints1.pointout指出2.facev.面临，面对

n.脸，面孔3.hundred---thousand---million---billion

百千百万十亿九十亿

ninebillion数十亿

billionsof4.over=morethan多于；超过

5.intotal总计；合计；总共

atotalof…总数为……翻译：我们班总共有60人。Thereare60studentsintotal.Ourclasshasatotalof60students.6.onethird三分之一twothirds三分之二

英语中分数的表达法：先分子后分母；分子基数词，分母序数词；分子大于一，分母用复数。注：aquarter表示四分之一五分之二四分之三八分之一twofifthsthreequartersoneeighth7.becoveredwith被……覆盖coverwith在……上覆盖上……8.allyearround全年9.inthefuture将来

infuture今后=fromnowon10.treatsb./sth.well好好对待……

翻译：我们应当好好对待自己的父母亲。

Weshouldtreatourparentswell.改成被动句Ourparentsshouldbetreatedwellbyus.Fillintheblankswiththecorrectformsofthewordsinthebox.increasedrysurfacebilliontotalThenumberofswimmershereis__________quicklybecauseit’sveryhotthesedays.Theschoolhasa_____of900students.Ithinkitmaybethe_______seasonoftheyear.increasingtotaldriestincreasedrysurfacebilliontotal4.The________ofourbodyisskin.Itprotectsus.5.Howmany________ofpeoplearethereintheworldnow?surfacebillionsHomeworkReviewLesson38.

2.Writeashortpassageabout