九年级下册 英语 第二模块第四单元《Lesson 7 Revision of Module 2》课件

九年级下册—上海教育出版社—英语—第二模块第四单元

Module2Unit4NaturaldisastersLesson7RevisionofModule2学习目标通过这节课的学习，你将能做到以下几点：1.运用本模块的词汇、句型描述环境问题、成因及影响。2.使用形式主语It、祈使句以及情态动词就环境问题提出应对措施。3.根据本模块所学知识,小组合作设计一份关于“Environmentalproblemsinourcity”的手抄报。4.提升保护环境、抗灾自救的意识，树立人与自然和谐共处的观念。Iusedtobebeautiful!Iamintrouble.Pleasehelpme.Module2Environmentalproblems此页图片来源于网络DifferentkindsofEnvironmentalproblems2.Naturaldisaters1.Man-madeenvironmentalissuesThegreenhouseeffectCuttingdownforestsBadhabitsFloodForestfireTyphoonEarthquake此页图片来源于网络Part1Made-madeenvironmentalissuesQ:Doyourememberwhatthegreenhouseeffectis?Environmentalissuesaretheharmfuleffectsofhumanactivitiesontheenvironment.Theseincludegreenhouseeffect,deforestation,wastedisposal,etc.此页图片来源于网络Whatisthegreenhouseeffect?ThereisanatmospherearoundtheEarth.Itisnecessaryforalllivingthings.TheatmospherecontrolstheEarth’stemperture,lettingsunlightinandstoppingitfromgettingout.Withoutit,theEarthwouldbeascoldandlifelessastheMoon.However,wearepollutingtheatmospherewithharmfulgases,whichmakesitkeepintoomuchheat.SotheEarthisbecomingwarmer

andwarmer.Wecallthisthegreenhouseeffect.此页图片来源于网络此页图片来源于网络Howdohumanactivitiesaffecttheenvironment?Whenweburnfuelssuchaspetrolandcoal,weproduceagascalledcarbondioxide(CO2).Toomuchofthisgaspollutestheatmosphere,andcausesittokeepintoomuchheat.Asa

result,theEarth’stemperatureisincreasing.Itcanalsocausesealeveltoriseandcitiestodisappear.ThegreenhouseeffectCuttingdownforestsPeopledestroynaturebycuttingdownhugeareasofforests.Thismakesthegreenhouseeffectworse.Italsodestroysthehomesofanimalsthatliveintheforests.Itcancause

thesurfaceofsoiltobeeasilydestroyedbyrain.Thiscanresultinfloodsandevenmoredamage.badhabitsManyofourbadhabitsalsocausepollution.Peopleoftenusethingsonceandthrowthemawayaslitter.Thiscreatesmountainsofrubbishandpolluteslandandseas.Howcanwefixtheproblems?Watchavideoandwritedownthesolutions.Human’simpactsonenvironment&solutions此页视频来源于网络Waystohelpfixenvironmentalproblems.Walk,jog,oruseyourbikeorskateboardtoplacesinsteadofdrivingyourcar.Turnoffyourtablet,computerorTVwhenyouarenotusingit.Turnoffthelightswhenyouleavetheroom.Don’twastecleanwaterbecauseittakesalotofenergytoproduceit.Lastbutnotleast,recycleeverythingyoucan.Youcanmakeadifference.Tip1:WecanuseImperativesentencestomakesuggestions.图片来源于网络35Tip2:Wecanusemodalverbstomakesuggestionstoo.1.Inorderto...weneedtotakeproperaction.2.Weshouldbedifferentfrommanyconsumers.3.Weshouldonlybuyanduseproductsfriendlytotheenvironment.4.Weshouldalsorecycleasmanythingsaswecan.5.Wecanreusethingsforthesamepurpose.6.Ifwejustlearntoliveinnewanddifferentways,wecanmakeadifference.Read&summarize图片来源于网络Tip3:Otherphrasesandexpressionsofmakingsuggestions.图片来源于网络Part2NaturaldisastersNaturalDisastersarecatastrophic

（灾难性的）eventsthatresultfromanyoftheEarth’snaturalphenomena（现象）.Thesecanrangefromfloodsandhurricanestotsunamis(海啸)andearthquakes.FloodForestfireTyphoonEarthquakeTsunami图片来源于网络Naturaldisasters&theirbadeffects图片来源于网络FloodWhatisaflood?Afloodisanoverflowofwaterthatcoverslandthatisusuallydry.Floodsarethemostcommonandwidespreadnaturalsevereweatherevent.Floodingisthenumberonesevereweatherkiller.

Somefloodsareextremelypowerful.Theyhaveenoughforcetorolllargerocks,teartreesfromtheground,destroybuildingsandbridgesandsoon.Naturaldisasters&theirbadeffects图片来源于网络TyphoonWhatisatyphoon?Atyphoonisaverystrongtropical(热带的)storm.Typhoonsaremadeovertheocean.Theyarenotmadeovertheland.Forstrongertyphoons,acharacteristicstructurecalledthe"eye"formswhenthewindspeedsreachaboutabout140kilometersperhour.

Typhooncandamageordestroyvehicles,buildings,bridges,treesandpersonalproperty.

Naturaldisasters&theirbadeffects图片来源于网络EarthquakeWhatisanearthquake?

Earthquakeisoneofthemajornaturaldisasters.Anearthquakeisashakingofthegroundcausedbymovementoftheearth'scrust(地壳).

Anearthquakecanoccuranywhereontheearth.

Everyyearitcausesahugelossoflifeandpropertyallaroundtheworld.

Naturaldisasters&theirbadeffects图片来源于网络ForestfireWhatisaforestfire?Forestfireisanuncontrolledfirethatmostlyoccursduringthesummertimewhenduetolowornorainfall,thedryleavesburstintoflamesbycomingintocontactwithaspark.Thiscanleadtoalarge-scalefireintheforestthatishardandalmostimpossibletobeputoutbyhumanefforts.

Forestfiresarecausedbynaturalcausesaswellasman-madecauses.

Theycancausenativespeciestodisappearandleadtofloodsandlandslides(滑坡).

Howcanweprotectourselvesduringthedisasters?calm/stay/fire/importantprepare/survivalkit/necessaryimportant/stayinside/awayfromcallthepolice/stayawayfromItisveryimportanttostaycalmwhenthereisafire.ItisnecessarytoprepareasurvivalkitwhenanasteroidhitstheEarth.Itisimportanttostayinsideandawayfromthewindowwhenatyphooniscoming.Itisagreatideatocallthepoliceatonceandstayawayfromtheforestfire.Tip4:Wecanuseitastheemptysubjectofasentencetoreplaceato-infinitivetomakesuggestionsaswell.图片来源于网络Readthearticle&makesuggestionswith“It”.Itisimportanttodropdownontoyourhandsandkneesbeforeanearthquakeknocksyoudown.Itisagoodideatocoveryourheadandneckunderneathasturdytable.Itisnecessarytoholdontoashelteruntiltheshakingstops.图片来源于网络Howcanwestaysafeduringanearthquake?Part3DesignaposterabouttheEnvironmentalproblemsinourcity.Man-madeenvironmentalissuesNaturaldisastersBadeffectsMeasuresBadeffectsSurvivaltips图片来源于网络posterboardThingsyouneedfordesigningapostercolorpensscissorsgluestickpencilGroupdiscussion:Writealistofelementstoincludeintheposter.Student1:Sketchoutthedesign.Student2:Responsibleforenvironmentalissues.Student3:Responsiblefornaturaldisasters.Student4:Decorateyourposter.12345图片来源于网络Evaluationofthegroupwork图片来源于网络CriteriaContentsScore（1-5）Content（内容）1.Man-madeenvironmentalproblems,effectsandmeasures2.Naturaldisasters,effectsandsurvivaltipsLanguage（语言）1.Applying“It”astheemptysubject,modalverbsandimperativesentencestomakesuggetions2.Accuracyofwordsandexpressions(准确性)3.Logicoflanguage(语言的逻辑性)Layout（布局）1.Clearlyidentifiedtopic(清晰的主题)2.Illustration(插图)3.Creativity(创意)54534544通过这节课的学习，我能做到以下几点：1.Describesomeevironmentalproblems,thecausesandeffectsinyourownwords.2.Use“It”,Imperativesentencesandmodalverbstomakesuggestions.3.Designahand-madeposteraccordingtowhatyouhavelearnedinthislesson.4.Raiseyourawarenessofenvironmentalprotectionandlearnhowtostaysafeduringadisaster.Summary&AssessmentHomeworkPleasemakeaspeechon“Let’sgogreen!”toyourclass!此页图片来源于网络Thank

you!九年级下册—上海教育出版社—英语—第二模块第四单元

Module2Unit4NaturaldisastersLesson7RevisionofModule2（答疑）BrainstormWhatarethestudentsdoinginthepictures?此页图片来源于CCTVTheyarecelebratingEarthDay.SomethingaboutEarthDay1.WhenwasEarthDayfirstcelebrated?2.Whatisthetheme(主题)ofEarthDay?3.WhydowecelebrateEarthDay?4.HowdowecelebrateEarthDay?此页图片来源于网络Pleasereadthearticleandanswerthequestions.Ourplanetisanamazingplace,butitneedsourhelptothrive!That’swhyeachyearonApril22,morethanabillionpeoplecelebrateEarthDaytoprotecttheplanetfromthingslikepollutionanddeforestation.SincethefirstEarthDaywasheldin1970intheUnitedStates,ithasgrownintoaninternationallycelebratedeventinmorethan200countriesacrosstheglobe.1.OnwhichdaywasEarthDayfirstcelebrated?ItwasfirstcelebratedonApril22,1970.此页图片来源于网络2.Whatisthetheme(主题)forEarthDay2022?Everyyear,athemeisdecidedforthecelebrationofEarthDay.HerearesomeofthethemesforEarthDay.TheglobalEarthDayorganizerannouncedthatthethemefor2022willbe“Investinourplanet”.Itisfocusedonacceleratingsolutionstocombatourgreatestthreat,climatechange,andtoactivateeveryonetodotheirpart.EarthDay2022Investinourplanet此页图片来源于网络2.WhydowecelebrateEarthDay?1.Everyonecanparticipate2.Smallactsmatter3.WeonlyhaveoneEarthNooneisleftoutorleftbehind,everyonecandosomethingsmalltomakeanimpactonourplanet.Nomatterhowsmallchangesyoumake,theyaresignificant,andthisisyourchancetoimproveourworld.Weallneedtoberemindedtostayin