高中英語Unit 3 Environmental Protection優(yōu)秀ppt課件-課件下載-教習(xí)網(wǎng)

Reading and Thinking
What cnsequences may the climate change cause?
Befre yu read，lk at the graph and the picture belw and discuss these questins in grups.
1　What is the graph abut? What infrmatin can yu get frm it?
The graph shws the change in the Glbal Surface Temperature between 1920 and 2016. It shws the temperature anmaly，which shws hw much the temperature has risen abve what it wuld usually be at a base level.
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 phts like it. The stry is that theplar bear starved t death because it culd nt find enugh t eat.
1　What happened t the plar bear in the pht? Why did the writer write abut it? 2　Why is the “natural” greenhuse effect imprtant and necessary?
Read the text and answer the questins.
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.
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?4　Why did the authr mentin the climate scientists’ warning?5　What is the authr’s purpse f writing this text?
High greenhuse gas emissins lead t mre heat energy being trapped in the atmsphere and rising temperatures.
The authr mentined the climate scientists’ warning because it is essential that we take actin and s it needs t be brught t everyne’s attentin.
The authr’s purpse is t infrm the readers and inspire them t d whatever they can t deal with this prblem.
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION
CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTIONWe have knwn abut climate change fr decades. There is little dubt that Earth is getting warmer and warmer（see the graph）. A warming cean and atmsphere alng with melting ice and rising sea levels prvide evidence f a dramatic change in the glbal climate. In 2013，a lt f peple were shcked by a news pht f a dead plar bear that was fund n Nrway’s Arctic island f Svalbard. Accrding t the scientists wh fund its dead bdy，all that remained f the plar bear was“skin and bnes”. An expert wh has studied plar bears fr many years said that frm the psitin f its dead bdy，the bear appeared t have starved and died. Experts claimed that lw sea-ice levels caused by climate change meant the bear culd nt hunt seals as befre，s it had t travel greater distances in rder t find fd. This alarming case shwed hw the increase in temperature had an impact n Earth’s eclgy.
Then what is causing the increase in the glbal average surface temperature? 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. The “natural”greenhuse effect refers t the fact that heat frm the sun enters the atmsphere and warms Earth’s surface as shrt-wave radiatin. The heat is released back int space at lnger wave lengths. Greenhuse gases in the atmsphere，such as methane and carbn dixide，trap sme f the heat，keeping Earth’s climate warm and habitable. Withut this prcess，Earth culd nt sustain life. Hwever，the“man-made”greenhuse effect has nw becme a big prblem. When peple prduce huge amunts f extra greenhuse gases by burning fssil fuels，mre heat energy is trapped in the atmsphere and causes Earth’s surface temperature t rise quickly. 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. Climate scientists have warned that if we d nt take apprpriate actins，this warming trend will prbably cntinue and there will be a higher price t pay. In fact，news reprts are frequently bradcast abut extreme rainstrms and heatwaves causing deaths and ecnmic lsses.
Cntinued greenhuse gas emissins will result in further warming and lng-lasting changes t the glbal climate. This requires the attentin f peple all ver the wrld. Gvernments need t cnsider making plicies and taking apprpriate actins and measures t reduce greenhuse gas emissins. We as individuals can als reduce ur“carbn ftprint” by restricting the amunt f carbn dixide ur lifestyles prduce. It is ur respnsibility t seize every pprtunity t educate everyne abut glbal warming，alng with its causes and impacts，because this is the mst serius issue affecting all f us n this planet. S what will yu d t help?
Find the main idea fr each part
Part 1 (Para.1-2 )Part 2 (Para. 3)Part 3 (Para. 4)Part 4 (Para. 5)
The evidence f dramatic climate changethat had an impact n Earth’ eclgy
The causes f the increase in the glbal average surface temperature
The cnsequences f the rise in temperature
The slutins t reducing greenhuse gas emissins
Climate change
Greenhuse effect
Scan and finish the mind map
Read the text again and create a diagram describing hw the greenhuse effect wrks.
The greenhuseeffect
D. Heat enters the atmsphere
B. Reflected sunlight
C. Heat reflected back t earth’ surface
A. Heat released back int space
Discuss these questins in grups.1　What examples f extreme weather and disasters d yu knw? Can yu make a list? 2　D yu think climate change is the result f human activity? Give yur reasns.3　Wh d yu think shuld take respnsibility fr dealing with climate change? What can we d?
There are sadly many examples f extreme weather and disasters I knw f，such as the extremerainfall in France and the drught in East Africa in 2014. There were als heatwaves n nearly everycntinent due t climate change.
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.
I think we all need t take respnsibility fr dealing with it. Individuals can change their behaviur and try t reduce their carbn ftprint，while cmpanies and gvernments can d the same n the larger scale.
Ⅰ 閱讀理解（根據(jù)課文內(nèi)容選擇正確答案） 1. What’s the functin f the first paragraph f the text?A. T intrduce the tpic.B. T tell us climate change has been knwn fr decades.C. T shw the evidence f climate change.D. T cnfirm that Earth is getting warmer and warmer.2. Why is the pht f a dead plar bear mentined?A. T describe hw peple were shcked.B. T shw hw glbal warming influenced Earth’s eclgy.C. T study hw the bear died.D. T explain why the bear was starved t death.
3. What’s the main idea f the third paragraph?A. Hw glbal warming has cme abut.B. The “greenhuse effect” has tw cmmn meanings.C. The “natural” greenhuse effect is mre imprtant than the “man-made” greenhuse effect.D. The “man-made” greenhuse effect has becme a serius prblem.4. Why des climate change require the wrld’s attentin?A. The number f plar bears is smaller and smaller.B. News reprts are ften bradcast abut extreme rainstrms and heatwaves causing deaths and lsses.C. Gvernments can frce peple t reduce “carbn ftprint”.D. It is affecting all f us n the planet and if it is left alne，we will pay an even higher price.
Ⅱ 語法填空（根據(jù)課文內(nèi)容和語法規(guī)則完成短文） There is little dubt 1________ Earth is getting warmer and warmer. In 2013，a lt f peple 2_____________（shck） by a news pht f a dead plar bear 3__________ appeared t have starved and died. This 4__________（alarm） case shwed hw the increase in temperature had 5________ impact n Earth’s eclgy. 　　Then what is causing the increase in the glbal average surface temperature? Climate scientists think the prcess “greenhuse effect”，makes it pssible fr Earth 6__________（sustain）life. Hwever，the “man-made” greenhuse effect makes mre heat energy 7________（trap） in the atmsphere and causes Earth’s surface temperature t rise quickly. 　　The rise in temperature has led t an increase in extreme weather and natural 8________ （disaster） wrldwide. News reprts are 9__________（frequent） bradcast abut extreme rainstrms and heatwaves. This requires the attentin f peple all ver the wrld. 10________ is als ur respnsibility t seize every pprtunity t educate everyne abut glbal warming.
were shcked
Ⅲ 概要寫作　　閱讀課文，根據(jù)其內(nèi)容寫一篇60 詞左右的內(nèi)容概要。
One pssible versin: 　　It’s high time that the wrld shuld fcus n climate change caused by glbal warming，which has had an effect n Earth’s eclgy.（要點1）Accrding t climate scientists，the “greenhuse effect”，including the “natural” greenhuse effect and the “man-made” greenhuse effect，makes it pssible fr Earth t sustain life，but extra “man-made” greenhuse gas causes the increase in temperature.（要點2）In turn，it results in climate change， smetimes ding severe damage. This issue is well wrth the attentin f peple n the planet. （要點 3）
核心詞匯教材原句p.26 bear appeared t have starved and died. ……這只熊似乎是餓死的。1 starve vi. & vt.（使）挨餓；餓死；缺乏 starve t death 餓死 be starving 感覺很餓，餓極了 be starved f/fr 缺乏…… The animals were left t starve t death. Wh is t blame? 動物們被活活餓死了。這該怪誰呢？［詞匯復(fù)現(xiàn)］ Thanks t yur fd. I’m starving! 多虧了你的食物。我餓極了 ?。墼~匯復(fù)現(xiàn)］ The department has been starved f substantial resurces. 這個部門一直缺乏大量的資源。［詞匯復(fù)現(xiàn)］【詞語積累】 starvatin n. 饑餓；挨餓；餓死　　die f/frm starvatin 餓死
單句語法填空（1）They’ll either die frm the cld r starve __________ death. （2）When will the dinner be ready? We ___________ （starve）. （3）The pr kid is just starved __________ attentin. （4）He lks frward t the day when n ne will die f __________（starve）. 完成句子（5）Many peple ___________________（餓死） after the earthquake as a result f the delay f the supplies.
are starving
starved t death
教材原句p.26 This alarming case shwed hw the increase in temperature had an impact n Earth’s eclgy. 這一令人震驚的案例表明，氣溫升高對地球生態(tài)產(chǎn)生了怎樣的影響。2 have an impact n 對……有影響；對……造成影響There is n prf that French had an impact n the Chinese language. 沒有證據(jù)表明法語對漢語有影響。［詞匯復(fù)現(xiàn)］ Cancer stem cells have an impact n the utcme f disease. 癌癥干細胞對疾病的結(jié)果有影響。［詞匯復(fù)現(xiàn)］【詞語積累】have an effect/influence n... 對……有影響
單句語法填空（1）Questins that lead them int emtinal states will als have an impact __________ their respnses. （2）What the pregnant mther eats will have __________ impact n the baby’s develpment. 完成句子（3）［詞匯復(fù)現(xiàn)］Whatever yu d will ___________________________________（對……有影響）sciety， s behave well.
have an impact/effect/influence n
教材原句p.26 The ““natural” greenhuse effect refers t the fact that heat frm the sun enters the atmsphere... “自然”溫室效應(yīng)指的是來自太陽的熱量進入大氣層…… 3 refer t（t 是介詞）（1）指的是Peple wh are likely t succeed refer t thse wh are ambitius. 可能成功的人是指那些有抱負的人。［詞匯復(fù)現(xiàn)］（2）提到，談到搭配：refer 把……稱為…… She referred t a strange slid in her reprt. 她在報告中提到了一種奇怪的固體。［詞匯復(fù)現(xiàn)］ The child referred t the clrful ribbn as rainbw. 那個孩子把彩帶稱為彩虹。［詞匯復(fù)現(xiàn)］（3）參考，查閱Yu can refer t the excellent mechanic’s ntes if yu want. 如果你想的話，你可以參考優(yōu)秀技工的筆記。［詞匯復(fù)現(xiàn)］ Please refer t a dictinary t check the spelling. 請查一下詞典看看拼寫是否正確。
【歸納拓展】（1）把……送交給……（以求獲得幫助等）（2）reference n. 提及，涉及；查閱，參考；推薦信in/with reference t 關(guān)于 fr future reference 供日后參考
單句語法填空（1）We always refer t Ben __________“a nice by”. （2）While giving the English speech，ne is nt allwed t refer __________ the ntes. （3）Yu’d better write dwn the phne number f that restaurant fr further __________（refer）. 完成句子（4）The headmaster spke at the meeting fr nearly an hur withut _____________________（參考） his ntes. （5）I prmise nt ____________________（提到） this matter again. （6）I have nthing t say ____________________ （關(guān)于） the agreement. （7）English ____________________ （被稱為） a universal language.
referring t
in/with reference t
is referred t as
教材原句p.27 The heat is released back int space at lnger wave lengths. 熱量以更長的波長釋放回太空。4 release vt. & n. 排放；釋放；發(fā)布release a prisner 釋放囚犯a release frm prisn 從獄中釋放release a mvie 發(fā)行影片the latest release 最新發(fā)行的產(chǎn)品In the fggy mrning，the enemy released the wrkers frm the awesme quarry. 在霧蒙蒙的早晨，敵人把工人們從可怕的采石場里釋放了出來。［詞匯復(fù)現(xiàn)］ Plice have released n further details abut the accident in the harbur. 關(guān)于在港口發(fā)生的事故，警方?jīng)]有透露更多的細節(jié)。The new editin f the dictinary with new idims will be released later this mnth，as yu anticipate. 如你所料，新版成語詞典將于本月晚些時候出版。［詞匯復(fù)現(xiàn)］
單句語法填空（1）The prisner has served his sentence and ______________（release） tmrrw. （2）［詞匯復(fù)現(xiàn)］On the peak，she burst int tears， __________（release） all her emtins. 完成句子（3）After the trainer was sure that the whale culd lk after itself，he _____________________（把它放入大海）. （4）The mayr has 　　　　　　　?。òl(fā)表聲明） explaining the reasns fr his resignatin.
will be released
released it int the sea
released a statement
教材原句p.27 Withut this prcess，Earth culd nt sustain life. 如果沒有這個過程，地球就無法維持生命。5 sustain vt. 維持（生命、生存）；遭受；承受住The massive increase in spending failed t sustain his life when he became seriusly ill. 當他得了重病時，大量增加的開支沒能維持他的生命。［詞匯復(fù)現(xiàn)］ Anyhw，yu culdn’t let the cmpany avid sustaining lsses f millins f dllars. 無論如何，你不能讓公司避免承受數(shù)百萬美元的損失。［詞匯復(fù)現(xiàn)］ t sustain damage/an injury/a defeat 遭受損失/受傷/遭到失敗The ice will nt sustain yur weight. 這冰承受不了你的體重?！驹~語積累】sustainable adj. 可持續(xù)的；合理利用的sustainable ecnmic grwth 經(jīng)濟的可持續(xù)增長
完成句子（1）［詞匯復(fù)現(xiàn)］The questin has arisen which planets can 　　　　　　　?。ňS持生命）. （2）The typhn left，and the city had ________________________（遭受巨大破壞）. （3）［詞匯復(fù)現(xiàn)］The ice was t thin ________________________ （承受體重） f the gat. （4）A large internatinal meeting was held with the aim f prmting ________________________ ?。沙掷m(xù)發(fā)展）in all cuntries.
sustain life
sustained great damage
t sustain the weight
sustainable develpment
教材原句p.27 In fact，news reprts are frequently bradcast abut extreme rainstrms and heatwaves... 事實上，新聞報道經(jīng)常報道……極端暴雨和熱浪。6 frequently adv. 頻繁地；經(jīng)常（=ften） Buses run frequently between the city and the airline. 公共汽車頻繁地來往于市區(qū)與航空公司之間。［詞匯復(fù)現(xiàn)］ He isn’t a silent by. On the cntrary，he frequently asks questins abut the Internet. 他不是個沉默的男孩。相反，他經(jīng)常問關(guān)于互聯(lián)網(wǎng)的問題。［詞匯復(fù)現(xiàn)］【詞語積累】frequent adj. 頻繁的；經(jīng)常的；常見的a frequent visitr t ur huse 我們家的常客
單句語法填空（1）The newly learnt wrds will sn be frgtten unless __________（frequent）used in everyday life. 完成句子（2）　　　　　　　　　　　　　　　　（無論多么頻繁）perfrmed，the wrks f Beethven still attract peple all ver the wrld.
N matter hw frequently/Hwever frequently
7 bradcast vt. & vi.（bradcast，bradcast）播送（電視或無線電節(jié)目）；廣播；傳播（信息等） n. 廣播節(jié)目；電視節(jié)目The cncert will be bradcast live tmrrw evening. 音樂會將于明晚現(xiàn)場直播。I dn’t want t bradcast the fact that my father wns the cmpany. 我不想宣揚這家公司為我父親所有的事實。a live bradcast f the cncert 音樂會的現(xiàn)場直播a news bradcast 一檔新聞節(jié)目【學(xué)法點撥】a live bradcast（n.） bradcast（v.） live
單句語法填空（1）The annuncement _____________（bradcast） live last week. （2）We dn’t want _____________（bradcast） ur unhappiness t the wrld.完成句子（3）She 　　　　　　　　　　　　　　　?。ㄏ颉瓊鞑ミ@個好消息） all her friends.
was bradcast
bradcast the gd news t
教材原句p.27 ur“carbn ftprint”by restricting the amunt f carbn dixide ur lifestyles prduce. ……通過限制生活方式產(chǎn)生的二氧化碳量來減少我們的“碳足跡”。8 restrict vt. 限制，限定（數(shù)量、范圍等）；束縛；妨礙把……限制在…… restrict ne’s freedm 限制某人的自由The number f diners in this canteen is restricted t 50. 這家餐廳就餐者的人數(shù)限制在50 人以內(nèi)。［詞匯復(fù)現(xiàn)］ Having small children tends t restrict yur freedm. 有年幼的孩子往往會限制你的自由。The lng skirt restricted her mvements. 長裙妨礙了她的行動。【詞語積累】restrictin n. 限制規(guī)定；限制法規(guī)；約束speed restrictins 速度限制 a restrictin n smking in schls 禁止在學(xué)校吸煙
完成句子（1）Speed 　　　　　　　　（被限制在……） 30 mph in twns. 單句語法填空（2）Access t the club is restricted __________ members nly. （3）I restrict myself __________ ne cup f cffee a day. （4）The gvernment has agreed t lift __________ （restrict） n press freedm.
is restricted t
restrictins
教材原句p.27 It is ur respnsibility t seize every pprtunity t educate everyne abut... 我們有責任抓住每一個機會，讓每個人了解…… 9 seize vt. 抓??；（常指通過暴力突然）奪?。豢刂苨eize a chance/an pprtunity/pwer 抓住機會/ 抓住時機/ 奪權(quán)seize sb. by the arm 抓住某人的胳膊seize n/upn sth. 突然對……大為關(guān)注；抓住（可利用的事物） As far as I knw，Bb seized n the rain as an excuse fr missing schl. 據(jù)我所知，鮑勃以下雨為借口不去上學(xué)。［詞匯復(fù)現(xiàn)］ They seized the airprt in a surprise attack. 他們突襲攻占了機場。Seeing the pearl，he was seized by curisity. 看到珍珠，他好奇心頓起。［詞匯復(fù)現(xiàn)］【學(xué)法點撥】catch 側(cè)重指抓住實物，包括人；grasp 強調(diào)抽象含義的“抓”，還表示“領(lǐng)會”之意；snatch 指快速地“搶”；seize 多用來表示“抓住時機”。
單句語法填空（1）The man seized me by __________ arm and begged me t bring his sn back t life. （2）The rumurs were eagerly seized __________ by the lcal press. （3）［詞匯復(fù)現(xiàn)］Nt knwing that was his trick， she was seized __________ panic. 完成句子（4） __________________________ （抓住這次機會），therwise yu will regret it. （5）He bjected t vilence and never wanted t _____________________（奪取政權(quán)）by means f armed frces.
Seize the pprtunity/chance
重點句式教材原句p.26 There is little dubt that Earth is getting warmer and warmer... 毫無疑問，地球正在變得越來越暖…… 【句式分析】本句是復(fù)合句，that 引導(dǎo)同位語從句，解釋說明抽象名詞dubt 的具體內(nèi)容。1 There is little/n dubt that... 毫無疑問…… There is little dubt that the results are entirely cnsistent with ur earlier research. 毫無疑問，這些結(jié)果與我們早些時候的研究完全吻合。［詞匯復(fù)現(xiàn)］ There is n dubt that she’s very mdest abut her success. 毫無疑問，她對自己的成功非常謙虛。［詞匯復(fù)現(xiàn)］【歸納拓展】There is sme dubt abut... 對……有些疑問。Sb. has sme dubt abut... 某人對……有些疑問。
【誤區(qū)警示】（1）dubt（vt.）+ that 引導(dǎo)的賓語從句（否定句或疑問句中） dubt（vt.）+whether / if 引導(dǎo)的賓語從句（肯定句中）（2）dubt（n.）+ that 引導(dǎo)的同位語從句（否定句或疑問句中） dubt（n.）+ whether 引導(dǎo)的同位語從句（肯定句中） We dn’t dubt that he can d a gd jb. 我們不懷疑他能做得很好。I dubt if/whether that was what he wanted. 我不知道那是不是他想要的。
單句語法填空（1）There is little dubt __________ it is vital fr us t deal with e-waste prperly. （2）［詞匯復(fù)現(xiàn)］There is sme dubt __________ we shuld direct ur attentin at the fundamental questin. （3）He dubted __________ he wuld learn anything valuable frm Marie. （4）I dn’t dubt __________ he can accmplish the task befre the deadline.（5）If yu have any dubt __________ yur health，yu’d better cnsult yur dctr at nce. 完成句子（6）　　　　　　　　　　　?。ê翢o疑問） this candidate’s advantage lies in his ability t cmmunicate with freigners in English. （7）　　　　　　　　　　　　（對是否……有一些疑問）their ftball team will win the match.
whether/if
There is little/n dubt that
There is sme dubt abut whether
教材原句p.27 There is strng and cmprehensive evidence that the rise in temperature has led t... 有充分和全面的證據(jù)表明，氣溫上升已導(dǎo)致…… 【句式分析】本句是復(fù)合句。There is evidence that...“有證據(jù)表明……”， that 引導(dǎo)同位語從句，解釋說明evidence 的具體內(nèi)容。2 There is evidence that... 有證據(jù)表明…… There’s strng evidence that t much dessert is bad fr yur teeth. 有充分的證據(jù)表明，吃太多甜食對牙齒不好。［詞匯復(fù)現(xiàn)］【學(xué)法點撥】evidence 是不可數(shù)名詞。本句型中常用來修飾evidence的詞有：sme/gd/clear/strng 一些/充分的/明顯的/有力的。 There is clear evidence that smking causes heart disease. 有明顯證據(jù)表明吸煙導(dǎo)致心臟病?！驹~語積累】evident adj. 明顯的，顯然的 It is evident that... 很明顯…… It was evident that the chef was ging t lse his temper. 很明顯，廚師要發(fā)脾氣了。［詞匯復(fù)現(xiàn)］
單句語法填空（1）There is gd evidence __________ children’s early sleeping prblems are likely t cntinue when they grw up. （2）__________ is sme evidence that the cat sn made the assciatin between human beings and fd. （3）All the scientific evidence __________（shw） that increasing use f chemicals in farming is damaging ur health. 完成句子（4）　　　　　　　　　　　　 ?。ㄓ忻黠@的證據(jù)表明） the ship sank in a bmb attack. （5）　　　　　　　　　　　　（很明顯） the man is highly thught f in the cmpany.
There is clear evidence that
It is evident that

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