人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection课文课件ppt

这是一份人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection课文课件ppt，共30页。PPT课件主要包含了Lead-in，wildfires ，Wildfires，important，a graph，a photo，examples等内容，欢迎下载使用。
What can yu see in the picture?What will happen if glaciers are melting faster than befre?
Greenland’s melting glaciers
Vast quantities f water are lcked up as ice in Greenland’s giant sheets, yet these sheets are melting at increasing rates. In the past decade 3.5 trillin tns f ice has melted n the island. That’s enugh melted ice t cver the entire United Kingdm in 15 metres f water.
What ther cnsequences may glbal warming bring abut?
Glbal Warming
natural disasters
the rise f the sea level
insect utbreaks
threaten ecsystems
extreme weather
ecnmic lsses
castal cities submerged
NASA's Terra satellite shws fires arund the wrld
Brazil's capital city f Ri De Janeir is ne f the cities in real danger f getting swallwed up by the rising waters, and the ppulatin f 1.8 millin knws it. Research says that just an increase f 3 degrees Celsius culd fld and envelp the Cpacabana Beach, even the Barra de Tijuca twn nearby and the place's airprt.
Castal cities submerged
Insects spread because f increased rainfall and elevated temperatures – perfect cnditins fr them t breed and grw quickly. 
Insect utbreaks
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION
What is the writing style?A. ExpsitinB. Narratin C. ArgumentatinD. A news reprt
Expsitin: a full explanatin f a thery, plan, etc.
Read fr the main ideas
Para.1 The ________:The earth is getting ____________________.
Para.2 A(n) _____________:A plar bear starved t _______ because f hunting n seals.
Para.3 The _______:The “_____________________”.
Para.4 The _________:Mre extreme weather and natural _______ wrldwide.
Para.5 The ________:The glbal climate change requires the _________ f peple all ver the wrld.
prblem/ phenmenn/ present situatin
case/ example
reasns/ causes
cnsequences/ danger/ impacts
slutins/ measures
warmer and warmer
greenhuse effect
Part 1. The prblem
Part 2. The causes
Part 3. The cnsequences
Part 4. The slutins
◆a warming cean and atmsphere
◆melting ice
◆rising sea levels
What evidence f climate change can yu find in the first paragraph?
Read fr details
Part 1 (Para.1-2) The prblem
What is the graph abut? What infrmatin can yu get frm it?
increase sharply
increase gradually/ steadily
anmaly n. /əˈnɒməli/ a thing, situatin, etc. that is different frm what is nrmal r expected
The graph shws the changes f glbal surface temperature ver the perid frm 1920 t 2016.
What happened t the plar bear in the pht?
The plar bear died f starvatin.
The writer wrte abut it because it shwed ne f the effects f rising temperature due t climate change.
Why did the writer write abut it?
Can yu use yur wn wrds t describe hw climate change has influenced the plar bear’s life?
climate change
had t travel greater distances t find fd
bears culdn't hunt
lw sea-ice levels
its dead bdy fund
starved t death
Cause and effect
Put them in rder.
keep Earth’s climate warm and habitable, sustain life
natural greenhuse effect
causing earth’s surface temperature t rise quickly if t much heat energy is trapped
man-made greenhuse effect
Greenhuse effect
Part 2 (Para.3) The causes
A big prblem
The greenhuse effect
Draw a diagram describing hw the greenhuse effect wrks.
Visualise the prblem mre clearly. Demnstrate yur creative thinking and prblem-slving.
Reflected sunlight
Heat reflected back t Earth’s surface
Heat released back int space
What are the benefits f using diagrams?
What are the cnsequences f the glbal temperature rise?
The rise in temperature
extreme weather/ natural disasters
extreme rainstrms , heatwaves
serius damage,csting human lives, deaths and ecnmic lsses
Part 3 (Para.4) The cnsequences
Why did the authr mentin the climate scientists’ warning?
Because glbal warming needs everyne’s attentin and it is essential that we take apprpriate actins.
Part 4 (Para. 5) The slutins
Gvernments
Individuals
◆Make plicies
◆Take apprpriate actins and measures
◆Reduce ur carbn ftprint by restricting the amunt f carbn dixide ur lifestyles prduce
◆Educate everyne abut glbal warming, alng with its causes and impacts
What is a questin left at the end?
◆ Reduce, reuse and recycle◆ Srt the garbage◆ Plant mre trees◆ Take public transprt …
What will yu d t help?
Reduce yur fd waste.
Buy prducts made with recycled cntent.
Take shrter shwers.
Share yur knwledge!
Cntinue t use greener transprtatin.
Plant mre trees wherever yu can.
Use water efficiently.
We all cntribute t climate change and can make a difference by changing ur wn behavirs.
Chse energy-efficient prducts.
Get invlved.
What writing techniques des the authr use in the passage?
Read fr language features
The “natural greenhuse effect” refers t … Withut this prcess, earth culd nt sustain life. Hwever, the “man-made greenhuse effect” has nw becme a big prblem…
explanatin, cmparisn
An expert wh has studied plar bears …said that…
Accrding t the scientists wh fund …
Experts claim that…
Climate scientists have warned that if we…
scientists’ and experts’ qutes
S what will yu d t help?
raise a questin at the end f the article fr readers t think abut
Gvernments need t cnsider making plicies and taking apprpriate actins and measures … We as individuals can als reduce ur “carbn ftprint” by ….
Writing purpses: T infrm readers f glbal warming, cnvince and inspire them t d whatever they can d t deal with this prblem.
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed. — Mhandas K. Gandhi
Critical thinking
T satisfy their greed, sme peple verexplit natural resurces, hunt varieties f animals, ccupy mre land t build factries and extend cities unlimitedly, resulting in envirnmental destructin, eclgical unbalance and resurce exhaustin. Ultimately, we human beings will pay a terrible price.
What is the difference between “needs” and “greed”? Hw d yu understand the qute?
Nature has evlved t prvide enugh t satisfy the basic needs f all living things. Hwever, nature cannt prvide enugh t satisfy everyne’s greed, because greed is a desire that can never be satisfied.
An interview
A jurnalist frm England is visiting Li Hua’s cmmunity. He/She is nw interviewing Li Hua, a senir high schl student. They are talking abut the envirnmental prblems in the cmmunity.
The jurnalist : I am …frm England. May I ask yu sme questins abut the state f the envirnment in yur cmmunity? Li Hua: Of curse…The jurnalist : What envirnmental prblems des yur cmmunity have?Li Hua: …The jurnalist : What have residents dne t slve the prblem?Li Hua: …The jurnalist : Wh d yu think shuld take respnsibility fr dealing with the prblem? What can yu d t prtect the envirnment?Li Hua: …The jurnalist : D yu think climate change is the result f human activities? Give yur reasns. …
Situatin 1 (with example answers):
The jurnalist : I am …frm England. May I ask yu sme questins abut the state f the envirnment in yur cmmunity? Li Hua: Of curse…The jurnalist : What envirnmental prblems des yur cmmunity have?Li Hua:
一些居民经常随地扔垃圾。这种情况是如此的可怕，以至于很多人都无法忍受。 
The jurnalist : What have residents dne t slve the prblem?Li Hua:
Sme residents frequently drp garbage everywhere. The situatin is s terrible that dzens f peple can't tlerate it.
一些居民强烈建议安装高清摄像头。 那些乱扔垃圾的人应该被罚款。有必要采取严格的措施和执行一些规定。
Sme residents strngly recmmend that high definitin camera shuld be installed. Thse caught thrwing garbage abut shuld be fined. It's necessary t take strict measures and carry ut sme regulatins.
The jurnalist : Wh d yu think shuld take respnsibility fr dealing with the prblem? What can yu d t prtect the envirnment?Li Hua: The jurnalist : D yu think climate change is the result f human activities? Give yur reasns. Li Hua:The jurnalist: Thank yu s much.
每个人都应该对自己的行为负责。就我个人而言，我更喜欢购买可回收的产品。
Every persn shuld be respnsible fr their wn behaviur. Persnally, I prefer t buy the recycled prducts.
我确实认为气候变化是人类活动的结果，因为大多数科学家也这么认为，而且全球气温随着全球排放和人口的增加而上升。
I d think that climate change is the result f human activities because the majrity f scientists als think s, and als because glbal temperatures have fllwed the rise in glbal emissins and ppulatin.