Unit3EnvironmentalProtectionReadingandThinking課件高中英語人教版選擇性3

新人教版選擇性必修Book3ReadingandThinkingP26-27Unit3ENVIRONMENTALPROTECTIONEarthprovidesenoughtosatisfyeveryman’sneeds,butnoteveryman’sgreed.1.Whatcanyouseeinthepicture?2.Whatisthecauseofthisphenomenon?Globalwarming全球變暖meltingglacierTeachingobjectives:1.了解氣候改變；總結(jié)每段主旨大意2.了解溫室效應(yīng)，并創(chuàng)造圖表，說明溫室效應(yīng)進(jìn)行的過程任務(wù)清單1.總結(jié)段落大意2.總結(jié)文章結(jié)構(gòu)3.寫語法填空題課前測starvev.挨餓；餓死releasev.釋放；排放sustainv.維持；遭受ecologyn.生態(tài)學(xué)carbonn.碳fueln.燃料comprehensivea.全部的；所有的

submitv.提交chaosn.混亂annuala.每年的greenhouseeffect溫室效應(yīng)resultin導(dǎo)致insearchof尋找onbehalfof代表某人dozensof許多；很多課前測starvev.releasesustainecologycarbonfuelcomprehensive

submitchaosannualbehalfgreenhouseeffectresultininsearchofonbehalfofdozensof1.Whattypeofwritingisthispassage?A.Argumentativewriting（議論文）B.Narrativewriting（記敘文）C.Expositorywriting（說明文）D.Advertisingwriting（廣告）本文是一篇說明文。說明文是客觀說明事物的一種文體，以解說或介紹事物的形狀、性質(zhì)、成因、構(gòu)造、功用、類別等為主要內(nèi)容。說明文主要通過對客觀事物或事理的介紹說明，達(dá)到以知識(shí)教人的目的，因此說明文以客觀、準(zhǔn)確為基本要求，強(qiáng)調(diào)科學(xué)性和客觀性。Whatisthegraphabout?Whatinformationcanyougetfromit?thechangeintheGlobalSurfaceTemperaturebetween1920and2016.TemperatureAnomalyshowshowmuchthetemperaturehasrisenabovewhatitwouldusuallybeatabaselevel.Before-readingTask1（任務(wù)一）:Readforthemainideaandthestructure.Part1:(para.1-2)Part2:(para.3)Part3:(para.4)Part4:(para.5)Theevidence(證據(jù))ofdramaticclimatechangethathadanimpactonEarth’secologyThecauses(原因)oftheincreaseintheglobalaveragesurfacetemperatureTheconsequences(結(jié)果)oftheriseintemperatureThesolutions(解決方法)toreducinggreenhousegasemissionsMatchthemainideawitheachpart.Fast-readingEvidenceCauseConsequencesSolutionsActivity2:Readforthemainideaandthestructure.

Wehaveknownaboutclimatechange

fordecades.ThereislittledoubtthatEarthisgettingwarmerandwarmer(seethegraph).我們幾十年前就知道氣候變化了。毫無疑問，地球正變得越來越暖和（見圖表）。幾十年氣候變化Thereislittledoubtthat...毫無疑問...，that引導(dǎo)同位語從句比較級(jí)+比較級(jí)越來越...Anexpertwhohasstudiedpolarbearsformanyyearssaidthatfromthepositionofitsdeadbody,thebearappearedtohavestarvedanddied.一位研究北極熊多年的專家說，從它尸體的位置看，這只熊似乎是餓死的。似乎who引導(dǎo)定語從句，作主語，修飾anexpertthat引導(dǎo)賓語從句n.

位置，方位v.

（使）挨餓，餓死appeartohavedonesth.好像做完了某事The“natural”greenhouseeffectreferstothefactthatheatfromthesunenterstheatmosphereandwarmsEarth’ssurfaceasshort-waveradiation.Theheatisreleasedbackintospaceatlongerwavelengths.“自然”溫室效應(yīng)指的是來自太陽的熱量進(jìn)入大氣層，并以短波輻射的形式使地球表面升溫。熱量以更長的波長釋放回太空。指的是，提及that引導(dǎo)同位語從句v.（使）溫暖，（使）變暖和短波輻射vt.

&

n.排放；釋放；發(fā)布同位語從句同位語從句用于對名詞（通常是抽象名詞）進(jìn)行進(jìn)一步解釋該名詞的具體內(nèi)容。特點(diǎn)：從句與名詞是同位關(guān)系，從句內(nèi)容是對名詞的具體解釋。that（最常用）：無意義；只起連接作用，一般不省略whether：表示“是否”。who/whom/whose：用于指代人。when/where/why：用于指代時(shí)間、地點(diǎn)、原因等。表示事實(shí)或信息的名詞：fact（事實(shí)）news（消息）idea（想法）truth（真相）belief（信念）表示可能性或不確定性的名詞：possibility（可能性）doubt（懷疑）question（問題）表示建議或命令的名詞：suggestion（建議）order（命令）demand（要求）其他抽象名詞：hope（希望）promise（承諾）evidence（證據(jù)）

Thereisstrongandcomprehensiveevidence

thattheriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisastersworldwide,notonlycausingseriousdamage,butalsocostinghumanlives.有力且全面的證據(jù)表明，氣溫上升已導(dǎo)致世界范圍內(nèi)極端天氣和自然災(zāi)害的增加，不僅造成嚴(yán)重的破壞，而且還致人喪命。adj.全部的，所有的，詳盡的Thereisevidencethat...有證據(jù)表明that引導(dǎo)同位語從句導(dǎo)致V-ing作結(jié)果狀語notonly...butalso…不但...而且...Weasindividualscanalsoreduceour“carbonfootprint”byrestricting

theamountofcarbondioxideourlifestylesproduce.作為個(gè)人，我們也可以通過限制生活方式產(chǎn)生的二氧化碳的量來減少我們的“碳足跡”。by+V-ing作方式狀語作為個(gè)人v.限制；限定；束縛...的數(shù)量定語從句，省略that/which，修飾carbondioxideIn2013,manypeople1.

(shock)byanewsphotoofadeadpolarbearwhichappearedtohavestarvedanddied.Expertsclaimedthatlowsea-icelevels2.

(cause)byclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistance3.

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

hastwocommonmeanings:the“natural”greenhousewereshockedcausedtofind課文語法填空whichPost-readingTask3（任務(wù)三）練習(xí)effectandthe“man-made”greenhouseeffect.The“man-made”greenhouseeffecthasnowbecome5.

bigproblem.Thereisstrongandcomprehensiveevidence6.

theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisasters.Infact,newsreportsare7.

(frequent)broadcastaboutextremerainstormsandheatwaves8.

(cause)deathsandeconomiclosses.Weasindividualscanreduceour“carbonfootprint”