上海牛津英语-初三年级-第二学期教案.pdf

上海牛津英语-初三年级-第二学期教案.pdf

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9BUnit1Savingtheearth章节综述章节分析（Readingsection）

（一）综述本单元是关于一本有关地球环境的处于危险的书。

现在对地球环境存在很多威胁。

，本文通过五个方面来描述地球所面对的危机，学生通过阅读和分析，培养学生良好的环境保护意识，让他们感觉到制止污染已经成为一个刻不容缓的问题。

本课的任务有两个：

1对课文进行整体阅读。

培养学生略读（获取大意）、扫读（整理有关信息）、细读（分析篇章结构，概括中心）等的阅读技能。

2结合课文内容，引导学生谈谈和写作如何做到保护环境，提高保护环境意识。

（二）单元目标1.知识与能力：

学习课文中重点单词、词组、句型和语法；了解课文大意。

学会使用as.as来比较物品和事情动词ing的多种使用形式提高学生的阅读理解能力和培养学生的阅读技巧。

通过阅读准备（收集与树木作用、污染有关的资料）、略读（获取大意）、扫读（整理相关信息）等方式，培养学生理解能力，信息处理能力，思维能力，继续培养学生阅读能力。

2.过程与方法采用任务型教学法组织教学，通过比较、归纳、讨论等具体活动，达到教学效果。

3.情感态度与价值观让学生认识到保护环境的重要性，并决定为环保出一份力，做绿色环保者。

（三）重点和难点壮语从句sothat和sothatFirstPeriodTeachingaids:

1.StudentsBook2.cassetteplayerNewwordsandexpressions:

1.greenconsumer2.indanger3.globalwarming4.vital5.savetheearth6.firstofall7.threat8.environment9.theGreenhouseEffectlO.imagine11.atmosphere12.fuel13.keepfrom14.warmth15.lifeless16.pollute17.chemical绿色消费者处于危险中全球变暖致命的，重要的拯救地球首先危险，危害，威胁环境温室效应想象，设想大气燃料阻止做某事温暖，暖和无生命的污染化学药品18.intheformofgases以气态的形式存在19.keepin抑制，保留20.carbondioxide二氧化碳21.environmentallyfriendly环保的22.petrol汽油23.1evel水平，水准24.drown淹死Teachingprocedure:

IPre-taskpreparation1.Warmingupandintroductionofthetopic-Tellstudentssomethingaboutthecartoon.Thejokeisapunonthetwomeaningsofthewordgreen.HihastoldLotobecomegreen,meaningthatheshouldcarefortheenvironment.ButLohasmisunderstoodtheadvicefromhisfriend,andhaspaintedhimselfthecolourgreen.Thewordgreenhasbecomeassociatedwiththingswhicharefriendlytotheenvironment.Itisnowregularlyusedaboutproducts,actiongroupsandpolicies2.Askthestudentsthefollowingquestions：

a）T：

Whatishappeningtotheozonelayer?

S-HugeholeshaveappearedovertheNorthandSouthPoles.b）T：

Whatwillthebadeffectsofcuttingdowntreesbe?

S-Therewillbemorecarbondioxideintheatmosphere.STherewillbefeweranimalsandplants.S-Manyareaswillbecomedeserts.S*Theearthwillbecomewarmer.c）T：

Whatshouldwedowithourrubbish?

S*Sortitoutandrecycleglass,plastic,paperandmetal.d）T：

Ifyoulookaftertheenvironment,whatcolourdowesayyouare?

S：

Green.3.Lookandthink：

a）Thisexerciseshowsthestudentshowtoapproachanewtext,learningasmuchaspossibleaboutitbeforeadetailedstudy.b）Letthestudentsworkinpairstocompletetheexercise,andthenasksomepairstoreporttheiranswerstotheclass.4.Readthenewwords.IIWhile-taskprocedure1.Listentothetaperecordingofthefirstpassage2.Listenandrepeatitsentencebysentenceaftertherecording.3.Explainsomenewwordsandexpressionsonthereading.1）greenconsumer：

绿色消费者consumer：

（解释）apersonwhobuysorusessomething,customer（词性转换）v-consume（例句）Theconsumerscomplainedaboutthepoorqualityoftheelectronicproducts.2）situation情况，状况（例句）Imafraidthesituationisveryserious.3）indanger:

处于危险中danger:

危险（词性转换）adj.dangerous4）vital:

致命的,重要的（解释）essential,veryimportant（词性转换）adv-vitally（例句）1.Itsvitalthatwedosomethingtosavetheearth.2.Oxygenisvitalforlife.5）savetheearth:

拯救地球save:

拯救，搭救（词性转换）ad/-safe刀：

safetyadV-safely6）firstofall:

首先（彳列句）Firstofall,letsinviteMrWilsontogiveusaspeech.7）threat:

危险，危害，威胁（解释）danger（词性转换）H：

threaten威胁，恐吓（例句）1.Thethreatofwarhasdepressedbusinessactivity.2.Hetooknonoticeofhisfathersthreat.3.Whatarethethreatstotheenvironment?

4.Corruptionandcrimeareseriousthreatstoanysociety.8）environment:

环境（解释）thenaturalworldaroundus,surrounding（例句）Ifwedestroyourenvironment,wewilldestroyourselves.9）theGreenhouseEffect温室效应10）imagine:

想象,设想（解释）makeapictureofsomethinginyourmind（词性转换）：

imagination（例句）1.Heimaginesthatpeopledontbelievehim.2.Icantimaginewhathelookslike.11）atmosphere:

大气（解释）themixtureofgaseswhicharearoundtheearth（例句）l.Therocketwentupthroughtheatmosphereandintospace.2.Theatmospherecoversthewholeearth.12）act:

生效,发生作用（解释）dosth.orbehaveinacertainway（词性转换）faction,actor,actressadj；active（例句）Doesthedrugtakelongtoact?

13）keepfrom:

阻止做某事（例句）Shetriedtokeepmefromseeingtheletter.14）warmth:

温暖，暖和（解释）heat（词性转换）adj：

warm（例句）Shefeltthewarmthofthesunonherface.15）lifeless:

无生命的（解释）withoutanyformoflife,dead（例句）WethinkthatMarsisalifelessplanet.16）pollute:

污染（解释）makesomethingdirty,unpleasantordangerous（词性转换）n：

pollutionYoucanseethepollutiononthisbeach.（例句）1.Yoursmokingispollutingtheairinthisroom.2.Thestadiumlightspollutedtheskyaroundtheobservatory.17）chemical:

化学药品（词性转换）n-chemistry化学18）intheformofgases:

以气态的形式存在19）keepin:

抑制，保留20）carbondioxide:

二氧化碳21）fuel:

燃料22）petrol:

汽油23）level:

水平，水准（例句）1.Thegardenisarrangedontwolevels.2.Ifinallyfoundmyownlevelinthebusinessworld.24）drown:

淹死（解释）killbycoveringwithwater（词性转换）n-drowner（例句）1,Someplantswilldrownifyouwaterthemtoomuch.2.Dontplaybytheriverincaseyoufallinanddrown.4.Readthereadingtogether.5.TorF1）Itsnotvitalthatwedosomethingtosavetheearth.F2）Theatmosphereisessentialtous.T3）Wearepollutingourearthwithchemicals,soouratmosphereischanging.T4）TheGreenhouseEffectisharmfultotheearth.T6.Askandanswer：

1）Whatsaroundourearth?

Whatisitlike?

2）Whatwouldhappenifthereisnoatmospherearoundtheearth?

3）Whyistheatmospherechanging?

4）Whatshouldwedotodealwiththeproblem?

HIPost-taskactivity1）askstudentstosaysomethingabouttheimportanceoftheatmosphere基本要求2）sayinyourownwordswhatthejoboftheatmosphereis提高要求3）.Asksomestudentstodescribewhatgreenhouseeffectisintheirownwords.Anddrawadiagramtohelpyouretellthetextifyoucan.提高要求Consolidation：

1.Readthereadingafterthetaperecording基本要求.2.Recitethenewwordsandexpressions基本要求3.writeanarticleaboutwhatcausesthegreenhouseeffectandwhathappenedtotheearthbecauseofthegreenhouseeffect拓展要求Sumup：

本课时先扫除学生的单词关，为学生接下来学习reading的内容打好基础。

SecondPeriodTeachingaims:

Toreviewthefirstpassageofthereading1.Tolearnthesecondpartofreadingandletstudentsmastersomewordsandexpressions2.Totellthestudentsabouttheenvironment,threatstotheenvironmentfrompollutionandhowwecanprotecttheenvironment.Teachingaids:

1.Students,Book2.CassetteplayerNewwordsandexpressions:

1.damage损害，伤害2.theozonelayer臭氧层3.occur发生，出现，存在4.protective保护的，防护的5.bumup烧起来，烧掉6.CFC氟里昂7.aspraycan喷雾器，喷雾罐8.destruction破坏，毁坏，毁灭9.rainforest热带雨林lO.takein吸收11.erosion腐蚀，侵蚀12.flooding13.throwaway14.massive15.dowith16.billionTeachingprocedure:

IPre-taskpreparation1.Haveadictation.洪水泛滥扔掉大规模的，大量的对付，处理十亿Aroundtheearth,thereisatmosphere,whichletsthesunlightinandkeepsthewarmthfromgettingout.Itisessentialforalllivingthings.Withoutit,theEarthwouldbeaslifelessandcoldasthesurfaceofthemoon.ThegreenhouseeffectishappeririRbecausepeopleareusingmanychemicalsintheformofgasesandtheyarepollutingtheatmospherearoundourearth.ThegasesaremainlyCO2carbondioxide,whichareproducedbyburningfuels.2.Readthefirstpartofthereading.3.Askthestudentsthefollowingquestionsaboutthefirstpartofreading.a）T：

Isitvitalthatwedosomethingtosavetheearth?

S：

Yes.b）T：

Whatisessentialtoalllivingthings?

S-Theatmosphere.c）T-Whyisouratmospherechanging?

S：

Becausewearepollutingitwithchemicals.d）T-Howarecarbondioxideproduced?

S-Byburningfuelssuchaspetrol.e）T：

WhatmaytheGreenhouseEffectcause?

S*Tocausetheleveloftheseatoriseanddrowncitiesandevenwholecountries.4.Readthenewwords.nWhile-taskprocedure1.Listentothetaperecordingofparttwo2.Listenandrepeatitsentencebysentenceaftertherecording.3.Explainsomenewwordsandexpressionsonthereading.1）damage:

损害，伤害（解释）harmorhurt,especiallytothings（例句）Thestormdidalotofdamagetothecrops.2）theozonelayer:

臭氧层layer:

层,涂层（解释）covering,thickness（例句）l.Whenitiscold,youneedanextralayerofclothes.2.Thiscakehasalayerofchocolateinthemiddle.3）occur:

发生，出现，存在（解释）exist,happen（例句）1.IfanearthquakeoccursinCalifornia,manypeoplemaydie.2.Theaccidentoccurredatfiveoclock.3.Suchplantsdontoccurhere.4）protective:

保护的，防护的（解释）thatpreventssb./sth.frombeingdamagedorharmed（词性转换）忆protect：

protection（例句）Sheistooprotectivetowardsherson.5）burnup:

烧起来，烧掉（例句）Withouttheozonelayer,thesunwouldburnusup.6）CFC:

氟里昂7）aspraycan:

喷雾器，喷雾罐8）destruction:

破坏,毁坏，毁灭（解释）destroyingorbeingdestroyed,damage（词性转换）adj：

destructive（例句）1.Thefirecausedthedestructionofmybooks.2.Thewarbroughtdeathanddestructiontothedeath.9）rainforest:

热带雨林10）takein:

吸收（例句）Peopletakeinoxygenandgiveoutcarbondioxide.11）erosion:

腐蚀，侵蚀（解释）wearingaway,gradualdestruction（例句）Sandiscreatedbytheerosionofrocks.12）flooding:

洪水泛滥13）throwaway:

扔掉14）massive:

大规模的，大量的（解释）huge,verybig,withalargemass（词性转换）：

mass（例句）1.Ivegotamassiveamountofworktodo.2.Wemustmakemassiveeffortstoimprovethings.15）dowith:

对付，处理=dealwith,handle（例句）Wedonotknowwhattodowiththerubbishanditpollutesourlandandsea16）billion:

十亿e.g.billionsof4.Readthereadingtogether.5.TorF1）Theozonelayerformsanessentialprotectivelayeraroundtheearth.T2）UsingtoomanyCFCsisnotbadforusF3）TheburningandcuttingdownoftreesismakingtheGreenhouseEffectbetter.F4）Eachofusshouldbecomegreenconsumers.TIIIPost-taskactivityAsksomestudentstoretellthereadingwiththeirownwords.Consolidation：

1.Readthereadingafterthetaperecording.基本要求2.Recitethenewwordsandexpressions.基本要求3.Writesomethingabouthowpeoplearedamagingtheozonelayerandwhatpeopleshoulddo拓展要求Sumup*本课时将对课文进行整体阅读。

培养学生略读（获取大意）、扫读（整理有关信息）、细读（分析篇章结构，概括中心）等的阅读技能。

课前应该准备适当的内容，