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1、Module4SandstormsinAsiaIntroduction整体设计教材分析在本节课屮学生将会学到一些关于天气的词汇，重点是用来描述沙尘暴的词汇。教材设计了三个活动来逐渐熟悉本模块的话题，学生可以通过教材设计的三个活动来加深对本单元话题的理解，并能流利地表达沙尘暴发生时的场景。活动一对以设计成看图说话，教师要引导学生想象和回想沙尘暴发生时的场景并准确地描述出来。活动二的判断正误可以使学生对当今地球的环境恶化有个更深地了解。最后的小组讨论活动涉及人们在沙尘暴中的自我保护和对改造环境能够作出什么样的努力。学生通过本节课的学
2、习，能够对沙尘暴这种天气现象作出准确的描述并能分析其原因和给出解决方法。三维目标1.知识.与技能1)Makestudentsmastersomenewwords.2)Encouragestudentstoknowhowtodescribeasandstorm.2.过程与方法Trainstudents5speakingabilitythroughindividualandpairwork・3.情感与价值Getstudentstoknowtheharmthatsandstormsdotohumanbeingsandtrytodeve
3、loptheirsenseofenvironmentprotection.教学重点Gettoknowsomeinformationaboutsandstormsandencouragestudentstousetheirownwordstodescribethem.教学难点Learnsomenewwordsandotherinformationaboutsandstorms.教学方法Individualwork,pairworktogeteverystudenttoparticipateinclass.教学过程Step1Back
4、groundaboutthetopicofthismodule1•Talkaboutthetopicofthismoduleasanintroduction.Showthefollowingpassagetostudentsonthescreen.AboutSandstormThetopicofthismoduleis"environmentalconservation^（环境保护）•ThismodulemainlyintroducessomethingaboutthesandstormsinAsia,especiallyinC
5、hina.Atthesametime,itbringsinsomewordsaboutsandstormsandenvironmentalconservation.Whatisasandstorm?Asandstorm,akindofdisastrous（灾难性的）weathersystem,isacombinationofsandandstrongwind.Whatonearthcausessandstorms?Inmyopinion,severesandstormsareusuallycausedbybothnaturala
6、ndcontrived（人为白勺）factors,thatis,climatic,geographical,socialandhumanfactors.Ofallthefactors,theoveruseofnaturalresources,suchascuttingdowntoomanytreesandopeninguptoomuchuntouchedland,leadstothefrequentoccurrenceofsandstorms.Wheredoesasandstormusuallygo?Asmentionedabo
7、ve,disastrousasitis,asandstormdoesnotgoeverywhere,comingtoonlythoseplaceswithdryweatherandlittlevegetation（植物的总称，植被）.TakeChinaforexample,inthenorthwestofChina,wherethereislittleforest,sandstormsareworsenedwith（因为而恶化）people'sactivitieslikediggingupgrassandmining（采矿）・B
8、arelandeasilygivesawayitslandwhenstrongwindscome,interactionofsandandwindformingasandstorm.Andwhatdamagewillsandstormsusuallycause?
