Howmanycontinentsarethereintheworld?Whatarethey?…Lesson38:TheWorldIsaBigPlace

planet['pl?nit]Arctic['ɑ:ktik]Atlantic[?t'l?ntik]surface['s?:fis]increase[in'kri:s,'inkri:s]Lead-inplanet

['pl?nit]n.行星billion['bilj?n]n.十億；千兆total

['t?utl]

n.總計;總數

adj.總計的;總的increase

[in'kri:s]v.增加，增大surface

['s?:fis]n.表面Indian['?nd??n]

adj.印度的；n.印度人Atlantic[?t'l?ntik]n.＆adj.大西洋的Arctic

['ɑ:ktik]adj.北極的Showtimeintotal_____________ontheearth____________onethird____________alotof=lotsof_______becoveredwith_________allyearround_________thelargestone___________inthefuture___________總共，總計在地球上三分之一很多被...覆蓋一年到頭最大的一個在將來ThinkingTask1:★P100Readthepassagealoudandunderlinethewordsyoucan’tread.Task2:★P100ListentothepassageandcheckthepronunciationofthewordsandunderlinethephrasesTask3:★P101Let'sDoIt!

Task4:TranslationbetweenEnglishandChineseDiscussion1.Checkyouranswerswithyourclassmates.2.Readthetext.Theearthisaveryspecialplanet,anditfacesabigproblem.Intheyear2010,theworld'spopulationwasover7billionintotal.Itisincreasingvery

總共，總計quickly.By2025,theworldmayhaveabout8billionpeople.Andby2050,theworld'spopulationmayreach9billion.Thereisanotherproblem.peoplecan'tliveeverywhereontheearth.Wecan'tliveinwater,and

在地球上onlyaboutonethirdofourplanetisland.But

三分之一

Lesson38:TheWorldIsaBigPlace

partsofthislandareverydry.Thesedryplacearecalleddeserts.Someareashaveveryhighmountains.Othershavealotofsnowandice.Itisalotof很多=lotsofItis+adj+todosth.noteasytolivein

thoseplaces.Therearesevencontinents:Asia,Africa,Australia,Antarctica,Europe.NorthAmericaandSouthAmerica.Antarctica

iscoveredwith

snowandiceallyearround.Luckily,peoplecanbecoveredwith被...覆蓋allyearround一年到頭

liveontheothersixcontinents.Onthesecontinents,therearegreenforests,freshwaterandrichlands.Oceanscovertwothirdsoftheearth'ssurface.Theearthhasonlyonebigocean,butweusethesenamesforitsdifferentparts:thePacificOcean,theIndianOcean,theAtlanticOceanandtheArcticOcean.ThePacificOceanis

thelargestone.最大的一個Theearthisourhomenow,anditwillbeourhomeinthefuture.Itmustbetreatedwellforour

在將來childrenandforourchildren'schildren,too!increasedrysurfacebilliontotal1.Thenumberofswimmershereis__________quicklybecauseit’sveryhotthesedays.2.Theschoolhasa________of900students.3.Ithinkitmaybethe________seasonoftheyear.4.The________ofourbodyisskin.Itprotectsus.5.Howmany________ofpeoplearethereinthe

worldnow?increasingtotal

driestsurfacebillionsFillintheblankswiththecorrectformsofthewordsinthebox.2Explanation(8:27-8:36)1.total['t?utl]n.總計，總數adj.總的；總計的考向一：total做名詞時，構成atotalof,修飾可是名詞復數時，其謂語動詞多用復數形式，thetotalof...后的謂語動詞一般用單數形式。eg:__________twentyletterswererecievedlastmonth.上個月共收到20封信?？枷蚨簍otal做形容詞時，意為：“總的，總計的”一般在句子中作定語，不作表語。eg:Youcanchoosefouroutofthe____________.你可以從總數中選出四個?？枷蛉篿ntotal總計，總共eg:_______over100peoplecamehere.共計100人來到了這里。AtotaloftotalnumberIntotalExplanation(8:27-8:36)2.increase[in'kri:s]v.增加，增大考向一：increase既可作及物動詞又可作不及物動詞，其反義詞是decrease.也可作名詞，常用短語ontheincrease“正在增加，不斷增長”。eg:Thesecasesare___________.這些案件在不斷增加?？枷蚨?increaseby和increaseto辨析increaseby指增長了幾倍或百分之幾，后面加百分數或倍數。increaseto指增長到了....后接具體增長后的數字eg:Thepopulationofthiscityhas_________5percent.這個城市的人口增長了5％。ontheincreaseincreasedbyExplanation(8:27-8:36)eg:Ourcoaloutputhas__________6millionthisyear.我們今年的煤產量增加到了六百萬噸。3.onethird三分之一英語中分數的表達方法：分子用基數詞，分母用序數詞，分子大于1時，作分母的序數詞用復數。1/2：ahalf1/3：onethird1/4：onequarter3/4：threequarters3/5：threefifths做定語時，謂語動詞的確定要看名詞，名詞為可數名詞復數，謂語動詞用復數；名詞為不可數名詞，動詞用單數例如：aquarterofwater___clean.四分之一的水是干凈的。aquarterofstudents____intheclassroom.四分之一的同學在教室里。increasedtoisareExplanation(8:27-8:36)4.becoverdwith被...覆蓋辨析:becoverdwith和becoverdbybecoveredwith是用…………覆蓋，becoveredby是被……覆蓋。比如說大地被雪覆蓋，就是Theground______________thesnow.洞被布遮住了，就是Thehole___________cloth.把被動句到過來，變成主動句，比如說，Covertheholewithcloth.用布把洞遮住。with是用的意思，是人實行的動作。而大地被雪覆蓋那句，是自然形成的，人不能實行的動作，所以不能用with，所以用by。iscoveredbyiscoveredwith課堂檢測1.Thes_____ofthelakeisquitestill.2.Thet_____costwillbe130dollars.3.Theearthisap_____anditgoesaroundthesun.4.Readingwilli________yourvocabulary.5.Thelandiscovered____snow.A.inB.onC.withD.by6.Thebosshaveincreasedthepriceofpercent___3％.A.toB.forC.byD.by7.It'ssaidthat____ofthewateraroundtheworld____polluted.A.twothirds;hasB.twothirds;haveC.twothird;areD.twothirds;isurfaceotalcost名詞,成本lanetncrease(詞匯)CDD

課堂檢測8.in,we,live,water,can't(.)_____________________________________9.deserts,dry,called,these,places,are(.)_____________________________________10.must,earth,well,the,treated,be(.)___________________________