高中英语人教版 (2019)选择性必修 第三册Unit 1 Art一等奖ppt课件

这是一份高中英语人教版 (2019)选择性必修 第三册Unit 1 Art一等奖ppt课件，文件包含Unit1Period1ReadingandThinking课件人教版高中英语选修三pptx、ReadingandThinkingmp3、ClimateChangemp4、气候变暖导致大堡礁发生大规模白化mp4、里昂纳多ClimateChange演讲mp4等5份课件配套教学资源，其中PPT共53页， 欢迎下载使用。

What can yu see in the pht? What’s happening? Where d yu think it was taken? What d yu knw abut glaciers melting n earth?What des this pht make yu think f?Hw d yu feel when yu lk at the picture?
Earth prvides enugh t satisfy every man’s needs, but nt every man’s greed.— Mhandas K. Gandhi
What is the difference between “needs” and “greed”?Hw d yu understand the qute? Hw is it related t the theme f the unit?
By reading, explain causes and negative effects f glbal warming.
By teamwrk, present hw t slve the prblem f glbal warming in grups.
Be aware f the imprtance f cutting greenhuse gases and take effective actin t d it.
Learning bjectives
Climate change is a heat tpic fr the scientists arund the wrld. They all try t find ut the truth abut these questins:What causes the climate change?What are the slutins t stp climate change?View the vide.
What ther cnsequences may glbal warming bring abut?
What is the graph abut? What infrmatin can yu get frm it?The graph is abut the change f glbal Surface temperature.It shws us that the glbal temperatureis rising steadily and cntinuusly.2. What happened in the picture? D yu knw what caused it?A plar bear was dead and it is “skin and bnes.”The ice is melting n the muntain.Glbal warming causes the melting f iceberg and sme plar bears Suffer frm the lack f fd.
1. What type f writing is this passage? Argumentative writing B. Narrative writingC. Expsitry writing D. Advertising writing
2. In which part f a newspaper r magazine may we find this passage?Entertainment B. EcnmyC. Educatin D. Envirnment
Read the passage quickly, and chse:
本文是一篇说明文。说明文是客观说明事物的一种文体，以解说或介绍事物的形状、性质、成因、构造、功用、类别等为主要内容。说明文主要通过对客观事物或事理的介绍说明，达到以知识教人的目的，因此说明文以客观、准确为基本要求，强调科学性和客观性。
Read the text and sum up the main idea f each paragraph:
Glbal climate is changing dramatically.
An alarming case abut a bear starved t death
What is causing the increase in the glbal average surface temperature
The destructin f the rise in temperature and the warning
Further pssible changes t the glbal climate and ur duty
Read the text quickly, and figure ut its structure.
The evidence f dramatic climate change that had an impact n Earth’s eclgy
The cause f the increase in the glbal average surface temperature
The cnsequences f the rise in temperature
The slutins t reducing greenhuse gas emissins
本文按照“现象—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。
Read the text carefully, and answer the questins.
What happened t the plar bear in the pht? Why did the writer write abut it? The plar bear in the pht died f starvatin. The writer wrte abut it because it shwed ne f the effects f rising temperatures due t climate change.
Can yu use yur wrds t describe hw climate change have influenced the plar bear’s life?
Climate change lw sea-ice levels bears culd nt hunt had t travel greater distances t find fd starved t death its dead bdy fund
2. Why is the “natural” greenhuse effect imprtant and necessary?The “natural” greenhuse effect is imprtant because it warms the Earth’s surface and keeps it habitable.
3. What are the cnsequences f high greenhuse gas emissins? High greenhuse gas emissins lead t mre heat energy being trapped in the atmsphere and rising temperatures.
Keeping Earth’s warm and habitable
Read Paragraph 3, and figure ut the reasn why earth’s temperature rising.
Greenhuse effect
“Natural” greenhuse effect
“man-made” greenhuse effect
Causing Earth’s surface temperature t rise quickly if t much heat energy is trapped
Read Paragraph 4. What are the cnsequences f glbal temperature rise? Finish the mind map belw.
The rise in temperature
extreme rainstrms, heat waves
serius damage, csting human lives, ecnmic lsses
extreme weather/ natural disasters
4. Why did the authr mentin the climate scientists’ warning?The authr mentined the climate scientist’s warming because it is essential that we take actin and s it needs t be brught t everyne’s attentin.
5. What is the authr’s purpse f writing this text?The authr’s purpse is t infrm the readers and inspire them t d whatever they can t deal with this prblem.
In Paragraph 5, the authr hpes everyne can take actins t reduce ur “carbn ftprint”. As individuals, what can we d in ur daily life t help t minimize climate change?
Use renewable energiesSave energyStp using plastic bagsLive a lw-carbn lifeUse the minimum paper, backing paper etc.Take green transprtatinTake a shwer instead f a bathTurn ff the lights, cmputers etc. the mment yu dn’t need them…
Read Paragraph 5. What plicies can the gvernment make t reduce greenhuse gas emissins? Why is a questin left at the end?
In this passage, what writing techniques des the authr use in rder t achieve his/her purpse?
Read the text again and create a diagram describing hw the greenhuse effect wrks.
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 visualise the prblems mre clearly but als can help demnstrate yur creative thinking and prblem-slving.
1.What examples f extreme weather and disasters d yu knw? Make a list f them.2. D yu think it is human activity that caused glbal climate change? Give yur reasn?3. Wh shuld take respnsibility t address this climate change? What shuld yu d t d t tackle it?
Chse the right item frm the bx t make the summary cmplete. Change the frm when necessary.
starve, natural, eclgy, natural disaster, carbn ftprint, fssil fuel
Warming ceans, melting ice and rising sea levels prve climate change is happening. Its shcking impact n Earth's 1. ______________ culd be seen in a 2013 pht f a plar bear n the Nrway's Arctic island f Svalbard that had 2. ______________ t death. Unable t hunt seals as befre, scientists cncluded lw sea-ice levels due t climate change had frced it t travel lng distances t find fd.
When explaining climate change's causes, scientists ften talk abut tw types f “greenhuse effect” — “3. ______________” and “man-made.” As the sun warms Earth, greenhuse gases in the atmsphere such as methane and carbn dixide trap sme heat in, making Earth warm enugh t live n. Extra man-made greenhuse gases frm burning 4. _______________ hwever trap even mre heat in the atmsphere, leading t extreme weather and 5. _________________. 
fssil fuels
natural disasters
Scientists warn f mre disasters t cme if this man-made glbal warming is nt stpped. Bth gvernment and individual actins are required t reduce the carbn dixide r “6. _______________” ur lifestyles prduce. S what will yu d t help with the mst serius issue?
carbn ftprint
1.What examples f extreme weather and disasters d yu knw? Make a list f them.Tsunami, flds, landslides, sandstrms, thunderstrms, earthquakes, hail, ht waves, cld waves, typhns, trnads, hail
2. D yu think it is human activity that caused glbal climate change? Give yur reasn?Yes. Human beings burn t much fssil fuels and prduce large quantities f carbn dixide, causing the temperature t g up steadily .
3. Wh shuld take respnsibility t address this climate change? It is everyne’s duty t take care f the earth and d ur part t tackle glbal warming.
Take the stairs instead f elevatr
Dn't litter
What yu shuld d t d t tackle it?
G t schl by bike instead f by car/bus
Turn ff the lights when leavingCver the pt while cking
Use handkerchief instead f facial tissue
Use basket r envirnmental basket bag instead f plastic bag;buy thins ecnmic with energy; use recycle gds r items.
watch less TV
plant mre trees
eat mre vegetable
1. There is little dubt that Earth is getting warmer and warmer.
There is little dubt... 几乎没有疑问的是……There is n dubt that... 毫无疑问的是……There is sme dubt abut sth.  对……值得怀疑
that引导同位语从句，解释说明dubt的具体内容
注意：dubt前有否定意义的词修饰时，其后的同位语从句由that引导；dubt前有肯定意义的词修饰时，其后的同位语从句由whether或if引导。
2. Accrding t the scientists wh fund its dead bdy, all that remained f the plar bear was “skin and bnes”.
wh引导的定语从句，修饰先行词scientists
that引导的定语从句，修饰先行词all, that不能用which代替
句意：根据发现北极熊尸体的科学家的说法，这只北极熊只剩下了“皮和骨头”。
3. …the bear appeared t have starved and died.本句中appear是系动词，t have starved and died是不定式作表语。starve这个动作发生在appear之前，所以用完成式的形式来表达。
starve v. t suffer r die because yu d nt have enugh t eat (使)挨饿; 饿死
e.g. Thusands f peple will starve if fd desn't reach there. The schls are starved f funding.
starve t death 饿死be starve f/fr 缺乏/急需……
4. Climate scientists ften mentin a key climate prcess called the “greenhuse effect”, which has tw cmmn meanings: the “natural” greenhuse effect and the “man-made” greenhuse effect.
过去分词作后置定语，修饰名词prcess
which引导的非限制性定语从句，修饰the “greenhuse effect”
句意：气候学家经常提到一个被称为“温室效应”的关键气候过程，它有两个常见的含义：“自然”温室效应和“人为”温室效应。
5. The heat is released back int space at lnger wave lengths.
release vt. : t let a substance flw ut 排放；释放
release sth. int sth.eg Oil was released int the sea. Cal pwer statins release sulphur dixide (二氧化硫) int the atmsphere.
release vt. : t let news r fficial infrmatin be knwn and printed 发布
eg The latest news has just been released t the media.
6. Withut this prcess, Earth culd nt sustain life.
sustain v. t make smething cntinue t exist r happen fr a perid f time 保持，维持，使持续
eg She fund it difficult t sustain the children's interest.
sustain v. t suffer damage, an injury, r lss f mney 遭受，经受
eg Tw f the fire-fighters sustained serius injuries.
7. When peple prduce huge amunts f extra greenhuse gases by burning fssil fuels…
huge amunts f + 不可数名词 大量，许多修饰名词作主语时，谓语动词用复数形式
a huge amunt f +不可数名词 大量，许多修饰名词作主语时，谓语动词用单数形式
eg A huge amunt f mney has been spent n this prject.
eg Huge amunts f damage have been dne in a shrt time.
8. There is strng and cmprehensive evidence that the rise in temperature has led t an increase in extreme weather and natural disasters wrldwide, nt nly causing serius damage, but als csting human lives.
剩余的部分是that引导的同位语从句，解释evidence的具体内容。
nt nly…, but als…是两个并列的现在分词短语作结果状语
9. In fact, news reprts are frequently bradcast abut extreme rainstrms and heatwaves causing deaths and ecnmic lsses.
现在分词短语作后置定语，修饰rainstrms and heatwaves
bradcast v. t send ut radi r televisin prgrammes 广播; 播送
eg The interview was bradcast live acrss China.
bradcast v. t tell sth. t a lt f peple使广为传播，散布
eg Dn’t bradcast the fact that he lst his jb.
10. Cntinued greenhuse gas emissins will result in further warming and lng-lasting changes t the glbal climate.
result in: t make smething happen 导致，造成
eg The accident resulted in the death f tw passengers. Our effrts resulted in success.
【拓展】 result frm... 由……造成; 因……而产生 as a result f... 由于……的结果 as a result 结果 (在句中常用作插入语, 相当于一个副词)
11. We as individuals can als reduce ur “carbn ftprint” by restricting the amunt f carbn dixide ur lifestyles prduce.
restrict vt.  t limit r cntrl the size, amunt, r range f smething 限制；限定
eg In future we will restrict class sizes t 20 students. I'm restricting myself t a piece f candy a day.
省略了that/which的定语从句，修饰先行词carbn dixide
12. It is ur respnsibility t seize every pprtunity t educate everyne abut glbal warming,…
seize vt. t take hld f smething suddenly and vilently 抓住
seize a chance / an pprtunity :t quickly and eagerly d smething when yu have the chance t 抓住机会/时机
eg Seize the chance, therwise yu’ll regret it.
I seized his arm and made him turn t lk at me.
Write a cmpsitin with the title : Glbal warming in my eyes
What is glbal warmingHw des it cme abutWhat harmful effects dse it causeHw t stp it