Unit 3Environmental ProtectionSection AReadingand Thinking ppt课件 (1)-（2019版）新人教版选择性必修第三册高中英语.pptx

1、Unit 3 Environmental Protection MENULeading-inWhile-classAfter-classPart.1 Leading-inPart.1 Leading-inLeading inWhatisthegraphabout?Whatinformationcanyougetfromit?Leading inHaveyoueverseenthephotobefore?Whatmightbethestorybehindit?Leading inWhathappenedtothepolarbear？Howdoyoufeelwhenyouseethephoto？W

2、hatdoyouthinkmighthavecausedthepolarbearsdeath？Doyouthinkitisrelatedtotheglobaltemperaturerise？Part.2 While-classPart.2 While-classWhile-class阅读全文，找出每一段的主题句，划分文章结构PartParagraphMain idea11-2TheevidenceofdramaticclimatechangethathadanimpactonEarthsecology23Thecauseoftheincreaseintheglobalaveragesurfac

3、etemperature34Theconsequencesoftheriseintemperature45ThesolutionstoreducinggreenhousegasemissionsWhile-classPart 1Para 1introducing the topic a dramatic change in the global climatethe reason for its death Para. 2 finding a dead polar bear Global warming affected Earths ecology.While-classWhathappen

4、edtothepolarbearinthephoto?Whydidthewriterwriteaboutit?Thepolarbeardiedfromlackoffood.ThewriterwroteaboutittoshowhowtheincreaseintemperaturehadanimpactonEarthsecology.While-classWhatevidenceofclimatechangecanyoufindinthesetwoparagraphs？Whatistheauthorspurposeofusingthegraphandthephoto？Canyouuseyourw

5、ordstodescribehowclimatechangehaveinfluencedthepolarbearslife？While-classPara. 3 reasons for the increase in temperaturethenatural“greenhouse effecttheman-made greenhouse effect-producing huge amounts of extra greenhouse gasesWhile-class Whyisthe“natural”greenhouseeffectimportantandnecessary？ Whatar

6、etheconsequencesofhighgreenhousegasemissions?Becausegreenhousegasesintheatmospheretrapsomeoftheheat,keepingEarthsclimatewarmandhabitable.Withoutthisprocess,Earthcouldnotsustainlife. Moreheatenergyistrappedintheatmosphere,whichcausesEarthssurfacetemperaturetorisequickly.While-classDiagramsareveryusef

7、ultoolsthatcanbeusedtobrainstormideas,mapoutprocesses,showcauseandeffectrelationships,explainanewideaorconcept,andsoon.Whenyoureadanessayaboutscientificissues,youcantrydrawingadiagram,whichwillnotonlyallowyoutovisualisetheproblemsmoreclearlybutalsocanhelpdemonstrateyourcreativethinkingandproblem-sol

8、ving.While-classWhile-classPara. 4 results of the rise in temperaturean increase in extreme weather and natural disasters worldwideclimate scientists calling on people to take appropriate actionsWhile-classWhydidtheauthormentiontheclimatescientistswarning?Becausethewarmingtrendwillcausegreatdamageto

9、humanbeings.While-classPara. 5 how we reactGovernments need to make policies and take measures to reduce greenhouse gas emissions.Individuals restrict the amount of carbon dioxide their lifestyles produce.While-classWhatistheauthorspurposeofwritingthistext?Toattracttheattentionofpeopleallovertheworl

10、dtofocusonclimatechangeandtakeactionstoreducegreenhousegasemissionsandthecarbonfootprint.Part.3 After-classPart.3 After-classAfter-class1Whatexamplesofextremeweatheranddisastersdoyouknow?Canyoumakealist?2Doyouthinkclimatechangeistheresultofhumanactivity?Giveyourreasons.3Whodoyouthinkshouldtakeresponsibilityfordealingwithclimatechange?Whatcanwedo?Thank you!