Unit7KnowourworldLesson38TheWorldIsaBigPlaceplanetbilliontotalincreasesurfaceIndianAtlanticArcticn.

行星

n.

十億；千兆

n.

總計；總數(shù)adj.

總的；總計的v.

增加；增大

n.

表面；表層adj.

印度的n.

印度人n.&adj.

大西洋(的)n.&adj.

北極的WordsandexpressionsWordsplanetbilliontotalincreasesurfaceIndianAtlanticArcticn.

行星

n.

十億；千兆n.

總計；總數(shù)adj.

總的；總計的v.

增加；增大

n.

表面；表層adj.

印度的n.

印度人n.&adj.

大西洋(的)n.&adj.

北極的WordsandexpressionsWords1.地球是一個很特殊的星球。2.總計，合計，總共總數(shù)為……我們班總共有30個學生。3.三十億年幾十億年4.增加了……倍或百分之……增加到了……價格增加了百分之三十。人口增長到了60億。5.地球的表面1.Theearthisaveryspecialplanet.2.intotalatotalofThereare30studentsintotalinourclass.=Atotalof30studentsareinourclass.3.threebillionyears

severalbillionyears/billionsofyears4.increasebyincreasetoThepricehasincreasedby30%.Thepopulationhasincreasedto6billion.5.theearth’ssurfacethePacificOcean太平洋theAtlanticOcean大西洋theIndianOcean印度洋theArcticOcean北冰洋TounderstandthepassageabouttheearthTogetmoreinformationabouttheearthandthecontinentsTolearnsomewordsandexpressions:

intotalonethirdallyearroundtwothirdsAntarcticaiscoveredwithsnowandiceallyearround.objectivesHowmanycontinentsarethereintheworld?Whatarethey?AfricaNorthAmericaSouthAmericaAsiaEuropeAustraliaAntarcticaTrytomatchthesevencontinentswiththeircorrectdescriptions.Lookatthemapandcirclethefourmainoceans.1.Intheyear2010,theworld’spopulationwasover________.By2025,theworldmayhaveabout_______people.Andby2050,theworld’spopulationmayreach________.2.Onlyabout________ofourplanetisland.3.Butpartsofthislandarevery___.Theseplacesarecalled_______.4.Oceanscover_________oftheearth’ssurface.5.Theworld’slargestoceanis_______________.6.__________iscoveredwithsnowandiceallyearround.7billion8billiononethirdtwothirdsthePacificOceanAntarcticadryListentothepassageandfillintheblanks.9billiondesertsMatcheachparagraphwithitsmainidea.Para.1Para.2Para.3Para.4Para.5a.

Sixofthesevencontinentsaregoodforpeopletoliveon.b.Weshouldtreattheearthwell.c.Anincreasingpopulationisabigproblemfortheearth.d.

Twothirdsoftheearthiscoveredwithoceans.e.Peoplecannotliveeverywhereontheearth.ReadPara.1andfillintheblanks.Yeartheworld’spopulationby2010by2025by2050over7billionabout8billion9billionReadPara.2andcompletethesentences.1.Theproblemisthatpeoplecan’t_____________ontheearth.2.Someplacesaredifficulttolivein,suchas__________,______________andareascoveredwith_______________.3.Landonlycovers____________ofourplanetandtherestiswater.liveeverywheredesertssnowandiceonethirdhighmountainsReadPara.3&Para.4anddothefollowingexercises.1.Listthesevencontinents.2.Listthefourmainoceans.Asia,Europe,Africa,NorthAmerica,SouthAmerica,AustraliaandAntarcticaThePacificOcean,theAtlanticOcean,theIndianOceanandtheArcticOcean.Whichcontinentiscoveredwithsnowandiceallyearround?AntarcticaThePacificOceanWhichoceanistheworld’slargestone?ReadPara.5andcompletethesentences.Theearthisourhomenowanditwillbeourhome_______________,soit_________________.inthefuturemustbetreatedwellTrytoretellthepassagewiththehelpofthekeywords.theearthtwothirds—water/ocean→deserts,highmountains,areascoveredwithsnowandicegreenforests,richlandsonethird—landnoteasytoliveintheseplaceseasytoliveinthefourmainoceansabigproblem:largepopulationover7billionby2010about8billionby20259billionby2050anotherproblem:limitedareas

forlivingin(deserts,highmountainsandareascoveredwithsnowandice)Wemusttreatourhomewell.Problemsourplanetfacesplanetintotalincreasingonethirdarecalled

iscoveredwithtwothirdssurfaceIndianAtlanticbetreatedmustPleasepayattentiontotheunderlinedsentencesandthewordsinred.劃線句子均使用了被動語態(tài)。被動語態(tài)表示主語是謂語動作的承受者，被動語態(tài)由“be+過去分詞”構成。be隨著主語人稱和數(shù)以及時態(tài)的不同而變化。含有情態(tài)動詞的被動語態(tài)由“can/must/may/should…+be+過去分詞”構成。planetintotalincreasingonethirdcallediscoveredwithtwothirdssurfaceIndianAtlantictreated情態(tài)動詞may/can表“可能，可能性”。情態(tài)動詞must表“必須”。Pleasepayattentiontotheunderlinedsentencesandthecircledmodalverbs.planetintotalincreasingonethirdcallediscoveredwithtwothirdssurfaceIndianAtlantictreatedDoyouknowthemeaningsoftheunderlinedwords?Whymustwetakecareoftheearth?Whatcanwedototakebettercareofit?GroupworkDosomepracticeTranslatethefollowingphrasesintoEnglish.總計；合計；總共三分之一被……覆蓋三分之二到2050年增長到地球表面intotalonethirdbecoveredwith…twothirdsby2050increasetotheearth’ssurface1.Thenumberofswimmershereis__________quicklybecauseit’sveryhotthesedays.2.Theschoolhasa________of900students.3.Ithinkitmaybethe_______seasonoftheyear.4.The________ofourbodyisskin.Itprotectsus.5.Howmany________ofpeoplearethereintheworldnow?increasedrysurfacebilliontotalsurfacebillionsincreasingtotaldriestFillintheblankswiththecorrectformsofthewordsinthebox.1.Thecity’spopulationisovermillion___________(總計).2.Thepopulationhas__________(增加)from1.2millionto1.8million.3.Thereisnolivingthingsonthe__________(表面)ofthemoon.4.The________(India)liketoridetheelephants.5.Inrecentyears,theeconomy(經(jīng)濟)ofourcountry____rapidly.A.isincreasedB.hasincreasedC.increasedD.hasbeenincreased6.Where’sthemistake?Canyou_____________(把它指出來)?7.Mostofthewindowshere____________(朝向)south.intotalincreasedsurfaceIndianspointitoutface8.Somepeoplelovecats,but________(other)hatethem.9.Twothirdsoftheteachersinourschool_______(be)womenteachers.10.Thehillswere__________(cover)withsnow.11.BythetimeI________(get)totheairport,theplanehadalreadytakenoff.12.Thedictionarymay____forthreeweeks.keepB.bekeptC.borrowD.beborrowed13.–It’soneofthe____thingsintheworldtostaywithfriends.–Iagree.Italwaysmakesusrelaxed.A.worstB.happiestC.busiestD.hardestothers