高中英语人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection精品ppt课件

这是一份高中英语人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection精品ppt课件，共24页。PPT课件主要包含了Open page，Scanning，Skimming，Summary等内容，欢迎下载使用。
1. What’s happening in the pht?
2. Why des it happen?
Large pieces f ice are breaking ff a large glacier r ice sheet.
Because f glbal warming / the greenhuse effect / rising glbal temperatures.
3. Hw d yu understand the qute? Hw is it related t the theme f the unit?Earth can prvide enugh resurces fr man’s survival, but can nt sustain man’s damage t it, due t its greed fr resurces, which is the rt cause f envirnmental prblems and the basic reasn fr envirnmental prtectin.
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed.— Mhandas K. Gandhi
Reading and Thinking
Climate Change Requires The Wrld’s Attentin
Discuss the climate change
1 Befre yu read, lk at the praph and the picture belw and discuss these questins in grups.1. What is the graph abut? What infrmatin can yu get frm it? It is abut the change in the Glbal Surface Temperatures between 1920 and 2016. It shws us that the glbal temperature is rising steadily and cntinuusly.It shws us that the earth is becming warmer and warmer.
Pre-reading
2. Have yu ever seen the pht befre? What might be the stry behind it?I haven’t seen this pht, but I have seen similar phts t it. The stry behind it might be that the plar bear was struggling t find fd but in vain, and starved t death.
2 Read the text and answer the questins.1. What happened t the plar bear in the pht? Why did the writer write abut abut it?The plar bear died f/frm starvatin. The writer wrte abut it t shw hw the increase in temperature had an impact n Earth’s eclgy. The writer wrte abut it t shw ne f the effects f rising temperatures due t climate change.
2. Why is the “natural ”greenhuse effect imprtant and necessary？ Because greenhuse gases in the atmsphere trap sme  f the heat, keeping Earth's climate warm and habitable. Withut this prcess, Earth culd nt sustain life.3. What are the cnsequences f high greenhuse gas  emissins?Mre heat energy is trapped in the atmsphere,  causing Earth's surface temperature t rise quickly.
4. Why did the authr mentin the climate scientists' warning?T stress the seriusness f rising temperatures and the urgency t take apprpriate actin t deal with it.5. What is the authr's purpse f using the graph and the pht？T infrm the reader f this prblem f glbal warming and inspire them t whatever they can t deal with it.
1 Lk thrugh the text again and answer the fllwing questins.1. Which is the genre (type f writing) f this passage ?A. news reprtB. narratinC. argumentatinD. expsitin
2. In which rder is the text rganized? A. fact, pinin, example, ways B. prblem, decisin, actin, result C. phenmenn, cause, effect, slutin D. prperty, functin, pattern, measures
3. What des the text mainly tell us?A. Sme plar bears are becming endangered and need the wrld’s attentin.B. Glbal warming has becme the wrld’s cncern.C. The cnsequences f the greenhuse effect and slutins.D. Glbal warming has becme a big prblem and we must pay attentin t it.
4. In which part f a newspaper r magazine may we find this passage? A. Entertainment B. Ecnmy C. Educatin D. Envirnment
2 Read the passage again and cmplete the table.
an example f a dead plar bear
Sentence 2 in Para. 1
The phenmenn and evidence f glbal warming
Using a graph and a news pht; Giving an example
a warming cean and atmsphere;
melting ice;
rising sea levels
climate change
lnger fd-seeking travel
lw sea-ice levels
The fllwing reasns accunt fr the death f the plar bear, with ne influencing anther. Put them in a crrect lgical rder.
What is the rt cause?
Cause and effect
Sentence 1
The cause f glbal warming / a dramatic climate change
Using definitin
keeping earth’ surface warm and habitable
trapping mre heat energy in the atmsphere and causing Earth’s surface temperature t rise quickly
The effect f glbal warming/ The results f a dramatic climate change
Citing scientists’ pinins and giv ing an example (new reprts)
extreme weather
natural disasters
serius damage
human lives
slutins t reducing greenhuse gas emissins
By listing
Sentence 2
making plicies
taking apprpriate actins and measures
restricting
the amunt f carbn dixide ur lifestyle prduce
everyne abut glbal warming, alng with its causes and impacts
The greenhuse effect
3. Read the text again and create a diagram describing hw the greenhuse effect wrks. (P27, Ex. 3)
D. Heat enters the atmsphere
B. Reflected sunlight
C. Heat reflected back t earth’ surface
A. Heat released back int space
Climate change
Phenmenn & Evidence
individuals
Greenhuse effect
natural greenhuse effect
man-made greenhuse effect
1. D yu think climate change is the result f human activity? Give yur reasns. (P27, Ex. 4.2) Yes, humans burn fssil fuels like cal, natural gas and il t prduce energy, alng with sme byprducts called greenhuse gases like carbn dixide, methane and water vapur, which trap heat frm the sun and therefre warm the earth. S, the grwth f the greenhuse gas, carbn dixide in the air actually cmes as a result f things we d every day and the way we prduce and use energy.
Pst reading
2. D yu think we individuals shuld take respnsibility fr dealing with climate change? What can we d? (P27, Ex. 4.3) Yes, I think we individuals can have a great effect n such envirnmental prbems and have the pwer t d smething t imprve the envirnment by restricting the amunt f carbn dixide ur lifestyles prduce. Tgether, individuals can make a difference and everyne’s cntributins cunt. Here are what we can d t use less energy and lwer/reduce ur carbn ftprint t a minimum:Use electric appliances wisely and save water, gas and electricity.
Travel n ft, by bike r public transprt.Buy things that are ecnmical with energy.Buy prducts made frm recycled materials.Recycle materials and bjects, which take a lt f energy t make.Plant mre trees and prtect the frests, which absrb carbn dixide frm the air.Be an educatr abut glbal warming, alng with its causes and impacts.