高中英语人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection优秀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优秀ppt课件，共49页。PPT课件主要包含了Summary，Homework等内容，欢迎下载使用。

1. What can yu see in the picture?
2. What is the cause f this phenmenn?
Glbal warming
melting glacier
地球能满足人类的需要，但满足不了人类的贪婪。
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed.
1.What happened t the earth ver the years?
glbal warming
animals dying
Glaciers melting
extreme weather patterns and disasters
2. What kind f extreme weather patterns and disasters d yu knw f ?
sea level rise,Tsunami, flds, typhn, trnad, landslides, sandstrms,rainstrm,thunderstrms,vlcanic eruptin , hail, heatwaves, cld current, hail,drught,fire...
3. What’s the mst imprtant reasn f them?
Climate Change
Reading and thinkingClimate Change Requires The Wrld’s Attentin
By the end f this class, we will be able t1. knw the causes and cnsequences f climate change.2. explre practical ways t address climate change.3. figure ut effective infrmatin n graphs and diagrams.
Learning bjectives
Lk at the graph. What infrmatin can yu get frm it?
The earth is becming warmer and warmer.
Pre-reading
The plar bear (北极熊) was skin and bnes and starved t death.
What may be the cause f the death f the plar bear?
What can yu see in the pht?
Glbal warming causes the melting f icebergand sme plar bears may have suffered frm thelack f fd.
In the expsitry text, the authrs smetimes use sme graphs r diagrams in their essays in rder t cnvince their readers.
Fast-reading:Read fr the main idea and the structure.
Task 1:Match the main idea with each part.
Cnsequences
the main idea and the structure.
Task 2: Find the key sentence f each paragraph
Careful-reading
Task 3: Read Para 2 and answer the questins:
Find the cause and effect that can shw hw climate change has influenced the plar bear’s life?
climate change
lw sea-ice levels
bears culd nt____
had t_____________________ find fd
______t death
its dead bdy fund
travel greater distances t
What’s the rt cause f this series？
Evidence (para.1-2)
climatechange
Evidence 1:____________________
Evidence 2:_____________________
Evidence 3: ____________________
Evidence 4:________________
a warming cean and atmsphere
melting ice
rising sea levels
a dead plar bear
The ________ is getting warmer and warmer.
The cause f the increase in the glbal average surface temperature
Find the key sentence f Para 3
Causes (para.3)
Heat frm the sun enters the __________ and warms Earth’s __________ as _________-wave radiatin.
Keeping Earth’s warm and_____________
Peple prduce huge amunts f_________ greenhuse gases by burning_____________.
A big prblem
Mre ________ energy is trapped in the atmsphere and causes Earth’s surface temperature t ________ quickly.
fssil fuels
Greenhuse Effect
Task 4: Read Para 3 and fill in blanks:
Can yu create a diagram describing hw the greenhuse effect wrks?
Heat released back int space
Heat reflected back t Earth’s surface
Reflected sunlight
Draw a diagramDiagrams are very useful tls that can be used t brainstrm ideas, map ut prcesses, shw cause and effect relatinships, explain a new idea r cncept, and s n. When yu read an essay abut scientific issues, yu can try drawing a diagram, which will nt nly allw yu t visualise the prblems mre clearly but als can help demnstrate yur creative thinking and prblem-slving.
The cnsequences f the rise in temperature
In Para 4, why did the authr mentin the climate scientists’ warning?
Because it is essential that we take actin and s it needs t be brught t everyne’s attentin.
Find the key sentence f Para 4
The rise in temperature
Task 4: Read Para 4 and fill in blanks:
cnsequences


extreme weather
natural disasters
nt nly .but als .
extreme and causing deaths and ecnmic lsses
causing serius damage
csting human lives
slutns (para.5)
The slutins t reducing greenhuse gas emissins
Find the key sentence f Para 5
Climate is changing.
Ptential further changes
actins t tackle the issue
The develpment f the passage.
[ɪkˈspɒzɪtərɪ]
Expsitry writing
本文按照“证据—原因—危害—措施”的逻辑顺序展开，环环相扣，步步深入。标题Climate Change Requires the Wrld’s Attentin点明了作者的诉求：气候变化对地球生态系统的影响是巨大的，需要全人类共同关注和面对。文本以现在时态和将来时态为主，强调文章的现实意义及对将来不利后果的预测。
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed. — Mhandas K. Gandhi
Such as shelter, air, fd, water and the means t d smething prductive and meaningful.
Greed is a desire that can never be satisfied.
Needs mean all basic living things
Over lgging, plluted water resurces …
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed.— Mhandas K. Gandhi
地球能满足每个人的需要，但不能满足每个人的贪婪。
we shuld cherish what we have and d whatever we can t make the wrld a better place, leaving the green muntains and blue waters fr ur ffsprings.
Only by changing the way we treat the envirnment can we get alng well with it. Only by saving the envirnment can we save urselves. Lucid waters and lush muntains are valuable as "muntains f gld and silver". 青山绿水就是金山银山。If we dn't save water, the last drp f water will be ur tear. 如果我们不节约用水，那么最后一滴水将会是我们的眼泪。When the sky becmes blue again and the rivers becme clean, we'll live a healthier and happier life. 当天空再次变得湛蓝，河水变得清洁，我们会过上更健康、更快乐的生活。
Let’s keep the wrds in mind:
Climate change
Scan: mind map(hmewrk checking)
Evidence1:_______Evidence2:_______Evidence3:_______
example_______
natural greenhuse effect
____________________
_____________
gvernment: _________
__________: _______
functin:____
prblem:____
result:_______
Scan and finish the mind map
_______________
result: ______________
a warming cean and atmsphere
melting ice
rsing sea levels
a dead plar bear
man-made greenhuse effect
individuals
keeping Earth’s warm and habitable
Causing Earth’s surface temperature t rise quickly.
serius damage, csting human lives, ecnmic lsses
make plicies and take apprpriate actins and measures.
reduce ur “carbn ftprint”
Grup discussin
As a student, what can we d t reduce ur “carbn ftprint” ?
plant mre trees
Take the stairs instead f elevatr
Dn't litter
G t schl by bike instead f by car/bus
Turn ff the lights when leaving
Use handkerchief instead f facial tissue
Use basket r envirnmental basket bag instead f plastic bag
every small step will make a difference.
Take the stairs instead f the elevatr
What can we d t tackle it?
Dn’t litter!
G t schl r wrk by bike /bus instead f driving a car.
Use a handkerchief instead f tissues
Use reusable baskets r ec-friendly bags instead f plastic bags; buy things ecnmic with energy; use recyclable gds r items.
1. Surf the Internet and find 3-4 reasns why peple burn fssil fuels. 2. Read Paragraph 3 again and create yur wn diagram t describe hw the greenhuse effect wrks. 3. Finish part f the students’ wrksheet. .
climate change 气候变化the wrld's attentin全世界的关注knw abut...知道...;了解 decades 数十年来; 几十年来There is little dubt that ...毫无疑问 warmer and warmer 变得越来越暖alng with... 和…一起;随着; 除…以外（还）; 连同 ice and rising sea levels 冰的融化和海平面的上升a dramatic change in the glbal climate 全球气候的剧烈变化prvide evidence f ...提供了...的证据
be shcked by ...被震惊 a news pht f ...一张...的新闻照片all that remained f the plar bear 北极熊所剩下的一切skin and bnes 皮肤和骨头frm the psitin f its dead bdy 从它的尸体的位置来看appear t have starved and died 似乎已经饿死了claim that ...声称... mean that...意味着 sea-ice levels caused by climate change 由气候变化引起的低海冰水平as befre 如以前; 依旧; 照旧 hunt seals 捕猎海豹travel greater distances 走很远的距离this alarming case 这个令人震惊的案例the increase in ...在...方面的增长have an impact n…对…有影响
the glbal average surface temperature 全球平均表面温度Climate scientists 气候学家们a key climate prcess called the "greenhuse effect " 一个称为“温室效应”的重要气候过程tw cmmn meanings 两个普遍的含义refer t ...指的是；描述；提到；查阅refer t the fact that... 指的是……这个事实enter the atmsphere 进入大气层as shrt-wave radiatin 以短波辐射的形式be released back int space 被释放回太空at lnger wave lengths 以更长的波长trap sme f the heat 吸收部分热量
keep Earth's climate warm and habitable 使地球的气候温暖宜居withut this prcess 没有这个过程sustain life 维持生命huge amunts f +U/C 大量的 amunts f extra greenhuse gases 大量额外的温室气体burn fssil fuels 燃烧化石燃料be trapped in ...被困在 Earth's surface temperature t rise 引起地球表面温度上升
There is strng and cmprehensive evidence that ...有充分而全面的证据the rise in temperature 温度的升高lead t ...导致 increase in ... 的增长/增加extreme weather 极端天气和自然灾害natural disasters wrldwide 全球自然灾害cause serius damage 造成严重破坏cst human lives 造成人类生命损失take apprpriate actins 采取适当的行动this warming trend 这种变暖趋势a higher price t pay 要付出更高的代价cause deaths and ecnmic lsses 造成死亡和经济损失
cntinued greenhuse gas emissins 持续的温室气体排放result in 导致...；造成... further warming 进一步变暖a change in/t sth .. 的变化/改变/变革lng-lasting changes t the glbal climate 全球气候的持久变化 cnsider ding sth 考虑做某事 make plicies 制定政策take apprpriate actins and measures 采取适当的行动和措施reduce greenhuse gas emissins 减少温室气体排放as individuals 作为个人 n this planet在这个星球上reduce ur "carbn ftprint"减少我们的“碳足迹”restrict the amunt f carbn dixide 限制二氧化碳的量It is ur respnsibility t d sth 这是我们的责任去做 every pprtunity t d sth 抓住每个机会做某事alng with its causes and impacts 及其原因和影响the mst serius issue affecting all f us 影响我们最严重的问题