Unit 3 Reading and Thinking （ppt课件） (4)-2022新人教版（2019）《高中英语》选择性必修第三册.pptx

1、A large piece of ice breaking off a large glacier or ice sheet.either the Arctic or Antarctic.the problem of global warming.Look Look and discuss and discuss Global WarmingGlobal Warmingnatural disastersthe rise of the sea levelinsect outbreaksthreatening ecosystemsextreme weathereconomic lossescoas

2、tal cities submergedwildfires BrainstormingBrainstormingWildfiresWildfiresNASAs Terra satellite shows fires around the worldBrazils capital city of Rio De Janeiro is one of the cities in real danger of getting swallowed up by the rising waters,and the population of 1.8 million knows it.Research says

3、 that just an increase of 3 degrees Celsius could flood and envelop the Copacabana Beach,even the Barra de Tijuca town nearby and the places airport.Coastal cities submergedCoastal cities submergedInsects spread because of increased rainfall and elevated temperatures perfect conditions for them to b

4、reed and grow quickly.Insect outbreaksInsect outbreaksClimate Change Requires the Worlds Attention Reading ReadingCLIMATE CHANGE REQUIRES THE WORLDS ATTENTIONExpository essay While-reading While-reading:read for the text type:read for the text type 1.Whats the type of this text?A.News report.B.Biogr

5、aphy.C.Expository essay.D.Argumentation.While-reading:read for main ideasClimate change requires the worlds attention Para.1 The _:The earth is getting _.Para.2 A(n)_:A polar bear starved to _ because of hunting no seals.Para.3 The _:The“_”.Para.4 The _:More extreme weather and natural _ worldwide.P

6、ara.5 The _:The global climate change requires the _ of people all over the world.problem/phenomenon/present situation case/example reasons/causes consequences/danger/impactssolutions/measureswarmer and warmerdeathgreenhouse effectdisastersattention While-reading:read for main ideasPart 1(para.1-2)T

7、he problem While-reading:read for details a warming ocean and atmosphere melting ice rising sea levelsincrease sharplyincrease gradually/steadily While-reading:read for detailsanomalyn./nmli/athing,situation,etc.thatisdifferentfromwhatisnormalorexpected While-reading:read for details While-reading W

8、hile-readingBeforeWhat happened to the polar bear in the video?While-reading While-readingNow While-reading:read for detailsuThe polar bear died of starvation.uThe writer wrote about it because it showed one of the effects of rising temperature due to climate change,calling for our attention.Can you

9、 use your own words to describe how climate change has influenced the polar bears life?climate changehad to travel to find foodbears couldnt hunt low sea-ice levelsits dead body foundstarved to deathCause and effectPut them in order.While-reading:read for detailsPart 2(Para.3)The causesGreenhouse ef

10、fect _ greenhouse effect _ greenhouse effect keeping Earths climate _ causing Earths surface temperature _naturalman-madewarm and habitableto rise quicklyimportantA big problemThe greenhouse effectThe greenhouse effectDraw a diagram describing how the greenhouse effect works.1.Visualise the problem

11、more clearly.2.Demonstrate your creative thinking and problem-solving.Sunlight Reflected sunlight Heat reflected back to Earths surfaceHeat released back into spaceEarth AtmosphereWhat are the benefits of using diagram?The rise in temperature extreme weather/natural disasters extreme rainstorms,heat

12、 waves serious damage,costing human lives,economic losses led to example results Part 3(Para.4)The consequencesBecause global warming needs everyones attention and it is essential that we take appropriate actions.Part 4(Para.5)The solutionsWhat is a question left in the end?Post-reading:DISCUSSIONGl

13、obal WarmingGlobal Warming Reading for language featuresa grapha photoThe“natural greenhouse effect”refers to Without this process,earth could not sustain life.However,the“man-made greenhouse effect”has now become a big problem explanation,comparisonAn expert who has studied polar bears said thatAcc

14、ording to the scientists who found Experts claim thatClimate scientists have warned that if wescientists and experts quotesSo what will you do to help?raise a question at the end of the article for readers to think aboutGovernments need to consider making policies and taking appropriate actions and

15、measures We as individuals can also reduce our“carbon footprint”by.examplesWriting purposes:To inform readers of global warming,convince and inspire them to do whatever they can do to deal with this problem.MohandasK.GandhiTosatisfytheirgreed,somepeopleoverexploitnaturalresources,huntvarietiesofanim

16、als,occupymorelandtobuildfactoriesandextendcitiesunlimitedly,resultinginenvironmentaldestruction,ecologicalunbalanceandresourceexhaustion.Ultimately,wehumanbeingswillpayaterribleprice.What is the difference between“needs”and“greed”?How do you understand the quote?Naturehasevolvedtoprovideenoughtosatisfythebasicneedsofalllivingthings.However,naturecannotprovideenoughtosatisfyeveryonesgreed,becausegreedisadesirethatcanneverbesatisfied.Critical Thinking