牛津譯林版九年級(jí)英語(yǔ)下冊(cè)Unit 4 Life on Mars第3課時(shí)示范課教學(xué)課件

Unit4LifeonMarsReading

(II)牛津譯林版九年級(jí)英語(yǔ)下冊(cè)

WhydopeoplewanttomovetoMars?Warming-upThinkandsayTheEarthisbecomingmoreandmorec_________andp__________becausethepopulationisincreasingr__________.SomepeoplewouldliketomovetoM______.Theythinkbytheyear2100ours___________couldcarrylargenumbersofp___________.However,therecouldbemanyproblems.Forexample,couldhumanssurvivewithoutwater,o________orfood?Howwouldpeoplepreventthemselvesfromf________offinspace?WouldtherebeschoolsonMars?Anyway,c_________withlifeontheearth,lifeonMarswouldbeinterestingaswellasc____________.

Fillintheblankswithproperwordsrowdedollutedapidlyars

pacecraftassengersxygenloatingomparedhallengingPre-readingTheEarthisbecomingmoreandmorecrowdedand

polluted

becauseoftherapidincreaseinpopulation.1.WhywillweleaveourownplanettheEarth?ReadandanswerWhile-readingIttakesmonths.Becauseourspacecraftaretoo

slowtocarry

largenumbersofpeopletoMars

atpresent.2.HowlongdoesthespacecraftneedtogettoMarsatpresent?Why?

While-readingEverystudentwouldhaveacomputerathomeconnectedtoaninterplanetarynetwork.3.WherewouldwestudyonMars?Bytheyear2100,thejourneymightonly

takeabout20minutesinspacecraftthattravelatthespeedoflight.4.HowlongdoesthespacecraftneedtogettoMarsinthefuture?While-readingLifeonMarsAnalyzelifeonMarsFoodwouldmostprobablyintheformofpillsandwouldnotbesotasty.ThegravityonMarsisonlyaboutthree-eighthsofthatontheEarth.ComparedwithlifeontheEarth,peoplewouldhavemorespace.Robotswoulddomostoftheirworksothattheycouldhavemoretimetorelax.Everystudentwouldhaveacomputerconnectedtoaninterplanetarynetwork.FoodGravityHousesFreetimeSchools______________________________

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Post-readingLearnthelanguagepoints1.Ourownplanet,theEarth,isbecomingmoreandmorecrowdedandpolluted

becauseoftherapidincreaseinpopulation.moreandmore用來(lái)加強(qiáng)程度，意為“越來(lái)越……”。e.g.越來(lái)越年輕

越來(lái)越快

越來(lái)越好

越來(lái)越細(xì)心

越來(lái)越舒服youngerandyoungerfasterandfasterbetterandbettermoreandmorecarefulmoreandmorecomfortablePost-readingatthespeedof意為“以……速度”。類(lèi)似的短語(yǔ)：atthepriceof意為“以……的價(jià)格”。atahighprice意為“高價(jià)”。atalowcost意為“低成本”。atfull/highspeed意為“全速/高速”。e.g.那天晚上他以每小時(shí)200千米的速度駕駛。

_________________________________________________________汽車(chē)正高速行駛。

_________________________________________________________2.Withthedevelopmentoftechnology,bytheyear2100,thejourneymightonlytake

about20minutesinspacecraftthattravelatthespeedoflight!Thatnighthedrovethecaratthespeedof200kilometresperhour.Thecarsaredrivingathighspeed.Post-reading3.ThegravityonMarsisonlyaboutthree-eighthsofthatontheEarth.three-eighths意為“八分之三”。

分?jǐn)?shù)表達(dá)法：分子用基數(shù)詞，分母用序數(shù)詞，如果分子大于1，分母要用復(fù)

數(shù)形式。注意：分?jǐn)?shù)做主語(yǔ)，謂語(yǔ)動(dòng)詞的單復(fù)數(shù)由名詞決定。二分之一通常

用ahalf來(lái)表示，而四分之一通常用aquarter,也可用afourth，四分之三通常

用threequarters或threefourths來(lái)表示。e.g.我們班五分之三是女生。_____________thestudentsinmyclass_______girls.三分之一的水是臟的。_____________thewater_____dirty.ThreefifthsofareOnethirdofisPost-reading4.Atpresent,ourspacecraftaretooslowtocarrylargenumbersofpassengersto

Mars—itwouldtakemonths.too…to…意為“太……而不能……”，注意和…so…that...can’t...,...adj.+enoughtodo...的句型轉(zhuǎn)換。e.g.Sandy太小了而不能去上學(xué)。Sandyistooyoungtogotoschool.Sandyissoyoungthatshecan’tgotoschool.Sandyisnotoldenoughtogotoschool.Post-reading5.Everystudentwouldhaveacomputerathomeconnectedtoaninterplanetarynetwork.connect…to…意為“把……連接在……上，……與……連在一起”。此處connectedtoaninterplanetarynetwork是過(guò)去分詞短語(yǔ)，作后置定語(yǔ)修飾名詞computer。computer與connect是動(dòng)賓關(guān)系，故動(dòng)詞用過(guò)去分詞形式。如果被修飾的名詞與動(dòng)詞之間是主謂關(guān)系，則用該動(dòng)詞的現(xiàn)在分詞形式。e.g.連接上海和天津的鐵路正在建設(shè)中。

___________________________________________________________TherailwayconnectingShanghaitoTianjinisunderconstructionnow.Post-readingaswellas意為“不但……而且，既……又”。注意這一短語(yǔ)在翻譯成中文時(shí)，應(yīng)先aswellas后面的內(nèi)容，再翻譯前面的。e.g.Theyvisitedthemuseumaswellasthezoo.

______________________________________________Heaswellashisfriendslikesgoingshopping.______________________________________________6.LifeonMarswouldbeinterestingaswellaschallenging.他們既參觀(guān)了動(dòng)物園，又參觀(guān)了博物館。他和他的朋友們都喜歡購(gòu)物。Let’sdiscussPost-reading1.Doyouthinkit’struethatwecanliveonMars?2.WhatadvantagesanddisadvantagesarethereonMars?3.IfweliveonMars,whatshouldwedo?4.CouldhumanssurviveonMarswithoutwater,oxygenorfood?should(must/hadbetter/can)shouldn’t(mustn’t/hadbetternot/can’t/don’t)Post-readingWhatshouldwedoorshouldn’twedotoprotecttheEarth?Groupworkrideabikeorwalktoschoolusebothsidesofthepaperturnoffthelightswhenleavingplantmoretrees…pourwastewaterintoriversspeakloudinpublicsmokethrowpaperorbottlesaroundusetoomanyplasticbagsorboxes…TheEarthisourhomeanditdependsonuswhatitwillbelike.Weshouldtakecareoftheenvironmentforourselvesandforthenextgenerations.Post-readingCanyouthinkofsomesuggestionstoprotecttheEarth?DiscussPost-reading(1)Plantmoretreestopreventsandstorms.(2)Protectwetlandstopreventfloods.(3)Gotoschoolbybikeinsteadoftakingthecarto

keeptheEarthfromgetting

warmerandwarmer.(4)Stoppeoplefromcuttingdowntrees.(5)Donotdroplitter.(6)Don’tbuildtoomanytallbuildings.…Post-readingLet’swriteHowtoprotecttheEarthHowtoprotecttheEarthreducepollution...savewatersavepower…ReasonsWaysFeelingsmoreandmorepolluted…ProtecttheEarthWeallliveontheearth.Theearthisourhome.Wehaveonlyoneearth.However,______________________________________________________________________________Post-readingWeallliveontheearth.Theearthisourhome.However，ourearthisbecomingmoreandmorepolluted.（2）Wemayhavenowheretoliveinthefuture.（2分）Wemusttakecareofit.First，wecanwalktoschoolinsteadofdriving.Wecanalsoridebikesortakeabustoschool.（2）What'smore，weshouldturnoffthelightswhenleavingtheroom.（2分）Inordertosavewater，we'dbetterturnoffthetapwhenwebrushteeth.（2分）Otherwise，thelastdropofwaterwillbeourtears.（1分）Besides，wecanplantmoretreesnotonlyonthehillsbutalsoonbothsidesoftheroad.（3分）Manyhandsmakelightwork.（2S）Ifeveryonetakesactiontoprotecttheearth，I'msurewe