Unit3EnvironmentalProtectionReadingandThinking课件高中英语人教版选择性3

新人教版选择性必修Book3ReadingandThinkingP26-27Unit3ENVIRONMENTALPROTECTIONEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.1.Whatcanyouseeinthepicture?2.Whatisthecauseofthisphenomenon?Globalwarming全球变暖meltingglacierTeachingobjectives:1.了解气候改变；总结每段主旨大意2.了解温室效应，并创造图表，说明温室效应进行的过程任务清单1.总结段落大意2.总结文章结构3.写语法填空题课前测starvev.挨饿；饿死releasev.释放；排放sustainv.维持；遭受ecologyn.生态学carbonn.碳fueln.燃料comprehensivea.全部的；所有的

submitv.提交chaosn.混乱annuala.每年的greenhouseeffect温室效应resultin导致insearchof寻找onbehalfof代表某人dozensof许多；很多课前测starvev.releasesustainecologycarbonfuelcomprehensive

submitchaosannualbehalfgreenhouseeffectresultininsearchofonbehalfofdozensof1.Whattypeofwritingisthispassage?A.Argumentativewriting（议论文）B.Narrativewriting（记叙文）C.Expositorywriting（说明文）D.Advertisingwriting（广告）本文是一篇说明文。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。Whatisthegraphabout?Whatinformationcanyougetfromit?thechangeintheGlobalSurfaceTemperaturebetween1920and2016.TemperatureAnomalyshowshowmuchthetemperaturehasrisenabovewhatitwouldusuallybeatabaselevel.Before-readingTask1（任务一）:Readforthemainideaandthestructure.Part1:(para.1-2)Part2:(para.3)Part3:(para.4)Part4:(para.5)Theevidence(证据)ofdramaticclimatechangethathadanimpactonEarth’secologyThecauses(原因)oftheincreaseintheglobalaveragesurfacetemperatureTheconsequences(结果)oftheriseintemperatureThesolutions(解决方法)toreducinggreenhousegasemissionsMatchthemainideawitheachpart.Fast-readingEvidenceCauseConsequencesSolutionsActivity2:Readforthemainideaandthestructure.

Wehaveknownaboutclimatechange

fordecades.ThereislittledoubtthatEarthisgettingwarmerandwarmer(seethegraph).我们几十年前就知道气候变化了。毫无疑问，地球正变得越来越暖和（见图表）。几十年气候变化Thereislittledoubtthat...毫无疑问...，that引导同位语从句比较级+比较级越来越...Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.一位研究北极熊多年的专家说，从它尸体的位置看，这只熊似乎是饿死的。似乎who引导定语从句，作主语，修饰anexpertthat引导宾语从句n.

位置，方位v.

（使）挨饿，饿死appeartohavedonesth.好像做完了某事The“natural”greenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarth’ssurfaceasshort-waveradiation.Theheatisreleasedbackintospaceatlongerwavelengths.“自然”温室效应指的是来自太阳的热量进入大气层，并以短波辐射的形式使地球表面升温。热量以更长的波长释放回太空。指的是，提及that引导同位语从句v.（使）温暖，（使）变暖和短波辐射vt.

&

n.排放；释放；发布同位语从句同位语从句用于对名词（通常是抽象名词）进行进一步解释该名词的具体内容。特点：从句与名词是同位关系，从句内容是对名词的具体解释。that（最常用）：无意义；只起连接作用，一般不省略whether：表示“是否”。who/whom/whose：用于指代人。when/where/why：用于指代时间、地点、原因等。表示事实或信息的名词：fact（事实）news（消息）idea（想法）truth（真相）belief（信念）表示可能性或不确定性的名词：possibility（可能性）doubt（怀疑）question（问题）表示建议或命令的名词：suggestion（建议）order（命令）demand（要求）其他抽象名词：hope（希望）promise（承诺）evidence（证据）

Thereisstrongandcomprehensiveevidence

thattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.有力且全面的证据表明，气温上升已导致世界范围内极端天气和自然灾害的增加，不仅造成严重的破坏，而且还致人丧命。adj.全部的，所有的，详尽的Thereisevidencethat...有证据表明that引导同位语从句导致V-ing作结果状语notonly...butalso…不但...而且...Weasindividualscanalsoreduceour“carbonfootprint”byrestricting

theamountofcarbondioxideourlifestylesproduce.作为个人，我们也可以通过限制生活方式产生的二氧化碳的量来减少我们的“碳足迹”。by+V-ing作方式状语作为个人v.限制；限定；束缚...的数量定语从句，省略that/which，修饰carbondioxideIn2013,manypeople1.

(shock)byanewsphotoofadeadpolarbearwhichappearedtohavestarvedanddied.Expertsclaimedthatlowsea-icelevels2.

(cause)byclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistance3.

(find)food.Thenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?scientistsoftenmentionakeyclimateprocesscalledthe“greenhouseeffect”,4.

hastwocommonmeanings:the“natural”greenhousewereshockedcausedtofind课文语法填空whichPost-readingTask3（任务三）练习effectandthe“man-made”greenhouseeffect.The“man-made”greenhouseeffecthasnowbecome5.

bigproblem.Thereisstrongandcomprehensiveevidence6.

theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisasters.Infact,newsreportsare7.

(frequent)broadcastaboutextremerainstormsandheatwaves8.

(cause)deathsandeconomiclosses.Weasindividualscanreduceour“carbonfootprint”