UNIT7LESSON38THEWORLDISABIGPLACE课件冀教版英语八年级下册

planet/ˈplænɪt/n.行星billion

/ˈbɪlɪən/n.十亿；千兆total

/ˈtəʊtl/n.总计；总数adj.总的；总计的increase/ɪnˈkriːs/v.增加；增大surface/ˈsɜːfɪs/n.表面；表层Indian/ˈɪndɪən/adj.印度的n.印度人Atlantic/ætˈlæntɪk/n.&adj.大西洋（的）Arctic/ˈɑːktɪk/adj.北极的wordsThecontinentsoftheworldAsiaEuropeNorthAmericaAfricaAntarcticaAustraliaSouthAmericaHowmanycontinentsarethereintheworld?Whatarethey?Howmanyoceansarethereintheworld?Whatarethey?theAtlanticOceantheIndianOceanTheArcticOceanThePacificOceanTheoceansoftheworldThepopulationoftheworld

is

increasingveryquickly.Intheyear2010,theworld’spopulationwas

over7

billion

intotal.Unit7KnowourworldLesson38TheworldisabigplacePART01ListeningListeningListenandfillintheblanks.1.In2010,theworld’spopulationwasover7billion___________.By2025,theworldwillhave_____________people.2.About____________oftheworldisland.3.Oceanscoverabout_________________oftheearth’ssurface.4.Theearthisourhomenow,anditwillbe_________inthefuture.intotal8billionone

thirdtwothirdsourhome1.Theworld’spopulation

wasover7billionintotal.thepopulationof…意为“…的人口”，作主语时，谓语动词用单数。E.g:ThepopulationofShenzhenismorethantenmillion.深圳的人口超过1000万。billion意为“十亿”，前面有基数词修饰时，billion不加s;后与of连用时，billion加s

sevenbillionpeople七十亿人billionsofpeople几十亿人2.Theworld’spopulationwasover7billionintotal.intotal意为“总计；总共”，常常放在句末E.g.:Iwaswithmypetdogforfiveyearsintotal.

我和我的宠物狗在一起的时间总共有五年。total意为“总数；总计”，可用于短语atotalofE.g.:Atotaloftenmeetingswereheldtodiscusstheproblem.

总共举办了十次会议来讨论这个问题。3.Aboutonethirdofourplanetisland.

4.Oceanscovertwothirdsoftheearth’ssurface.cover…with…表示“用…覆盖…”其被动形式为“becoveredwith…被…覆盖”E.g.:Antarcticaiscoveredwithsnowandiceallyearround.

南极洲终年被冰雪覆盖。Itissnowingallday.Theground

withsnow.A.coverB.iscoverC.coveredD.iscoveredDPART02ReadingReading-fastreadingPara1.a.SixofthesevencontinentsaregoodforpeopletoliveonPara2.b.WeshouldtreattheearthwellPara3.c.AnincreasingpopulationisabigproblemfortheearthPara4.d.Twothirdsoftheearthiscoveredwithoceans.Para5.e.Peoplecannotliveeverywhereontheearth.Readthelessonandmatcheachparagraphwithitsmainidea.Reading-carefulreadingWhatproblemsdoestheearthface?thepopulationoftheworld0102thelandpeoplecanlivedesertsSnowandiceHighmountainsThepopulationisincreasingveryquickly.PART03GrammarPassiveVoice被动语态英语中动词分为主动和被动两种语态。主动语态：动作的发出者。被动语态：动作的承受者。我教你们。你们由我来教。Iteachyou.Youaretaughtbyme.他拿走了那本书。那本书被他拿走了。Hetookawaythatbook.Thatbookwastakenawaybyhim.PassiveVoice被动语态总结：主动语态句子变成被动语态句子哪三个部分要变？怎么变？Wecleanedtheroom.(主动）Theroomwascleanedbyus.（被动）PassiveVoice被动语态例句（主动）例句（被动）时态被动语态构成Theclassroomiscleanedbyus.一般现在时am/is/are+doneThekitewasmadebyhim.一般过去时was/were+doneTreeswillbeplantedtomorrow.一般将来时will+be+doneHecanbefoundbyme.含有情态动词情态动词+be+doneWecleanedtheclassroom.Hemadethekite.(We)willplanttreestomorrow.Icanfindhim.PracticeManypeoplevisittheGreatWalleveryyear.（变为被动）TheGreatWall

bymanypeopleeveryyear.isvisitedLiBaiwrotemanyfamouspoems.（变为被动）Manyfamouspoems

byLiBai.werewrittenTherabbitwillbecaughtbythedog.（变为主动）Thedogwill

therabbit.catchMyhomeworkwasfinishedlastnight.（变为主动）I

myhomeworklastnight.finishedPractice1.TheSpringFestival________inJanuaryorFebruary.A.celebratesB.iscelebratedC.celebratedD.wascelebrated2.Annie_________totheparty.Shehadawonderfultimewithus.A.invitesB.isinvitedC.wasinvitedD.hasinvited3.Weshouldtakegoodcareofthechildren.→Thechildrenshould________bythem.A.betakengoodcareB.betakengoodcareofC.takegoodcareofD.takegoodcareBCBPART04ExerciseExerciseincreasedrysurfacebilliontotal1.Thenumberofswimmershereis_________quicklybecauseit’sveryhotthesedays.2.Theschoolhasa______of900students.3.Ithinkitmaybethe_____seasonoftheyear.4.The______ofourbodyisskin.Itprotectsus.5.Howmany______ofpeoplearethereintheworldnow?increasingtotaldriestsurfacebillions根据首字母或汉语提示，完成单词。1.ThebiggestoceanintheworldistheP_______Ocean.2.Almosteveryoneknowsthee_____goesaroundthesun.3.Desertsmaycoverthree_________(百分比)oftheearth'ssurface.4.Thepopulationoftheworldis__________(增长)q