Unit4Globalwarming（第四课时）教案（新人教选修六）

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1、TheFourthPeriodLanguageStudyTeachinggoals教学目标LTargetlanguage目标语言a.重点词汇和短语glance,widespread,decrease,steady,average,existence,outer,onthewholeb.重点句式Itishumanactivitythathascausedthisglobalwarming.P29...itistheburningofmoreandmorefossilfuelsthatisresultinginthisincreaseincar

2、bondioxide.P262.Abilitygoals能力目标Learnabout"it"usedforemphasis.3.Learningabilitygoals学能目标Helpthestudentslearnhowtousenewwordsandexpressionsofthisunitandhowtouse“iLforemphasis.Teachingimportantpoints教学重点ThestructureofTtis…that…二Teachingdifficultpoints教学难点Teachthestudentshowt

3、omastertheuseof“it"foremphasis.Teachingmethods教学方法Explanationandpractice.Teachingaids教具准备Acomputer.Teachingprocedures&ways教学过程与方式StepIRevisionT:Goodmorning,everyone.Ss:Goodmorning,sir/madam.T:FirstPHcheckyourhomework.Haveyoufinishedtheposter?Ss:Yes.T:Well,whichgroupwouldli

4、ketoshowusyours?Getseveralgroupstoshowtheirposters.Asampleposter:WhatCanWeDoaboutCarbonDioxide?Carbondioxideisoneofthemaincausesofglobalwarmingwhichwillbringtheearthcatastrophe.Hereareafewwaysthatindividualscanfollowtoreduceitscontentintheair.•Turntheelectricalappliancesof

5、fifyouarenotusingthem.•Putonmoreclothesifyouarecoldinsteadofturninguptheheat.•Walkorrideabikeinsteadofusingmotorvehiclesifyoucan.•Recyclecans,bottles,plasticsandnewspapers,buythingsmaderecycledmaterials.•Buyproductsthataremadetosaveenergysuchas&idgesandmicrowaves.•Planttre

6、esinyourgardenorschoolyard.Together,individualsmakeadifference.It，stimeforustodosomethingaboutcarbondioxide.Talkwithyourfriendsorfamilyaboutglobalwarming.Let'sworktogetherandcaretheplanetwearelivingin.StepIIDiscoveringwordsandexpressionsT:Nowpleaseopenyourbooksandturntopag

7、e2&Lettdosomeexercises.StepIHDiscoveringusefulstructuresT:Nextlet^sturnbacktopage29.We511learnausefulstructure.Nowcomparethesetwosentencesbelow.Showthefollowingtwosentencesonthescreen.Humanactivityhascausedthisglobalwarming.Itishumanactivitythathascausedthisglobalwarming.T

8、:WhocantranslatethemintoChinese?Sa:Ithinktheyarethesame.Theybothmean“人类行为引发了全球变暖”・Sb:Idon