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

这是一份人教版 (2019)选择性必修 第三册Unit 3 Environmental Protection备课课件ppt，共37页。PPT课件主要包含了Review，用法小结，starve，meaning，starvation，verb，ecosystem，ecosphere，生态学 ，生态学的 等内容，欢迎下载使用。
Teaching bjectives:
By the end f this perid, yu will be able t…
1) learn t guess the meaning f the new wrds frm the cntext.2) further understand the usages f such imprtant wrds and expressins as greed, starve, eclgy and s n. 3) learn t use these target wrds by putting them in the right cntext with the right frm.
Wh d yu think shuld take respnsibility fr dealing with climate change?
Earth prvides enugh t satify every man's needs, but nt every man's greed. ——Mhandas K. Gandhi
greed[不可数名词]a strng desire fr mre wealth, pssessins, pwer, etc. than a persn needs 贪婪；贪心；贪欲
greedGreed is nt merely caring abut mney and pssessins, but caring t much abut them. 
Human beings shuld take respnsibility fr dealing with climate change.
Q1: Lk at the picture, what happened t the plar bear?
The plar bear appeared t have starvedand died.
starve vi.& vt. t suffer r die because yu d nt have enugh fd t eat; t make smebdy suffer r die in this way (使)挨饿；饿死
She’s _______________t try t lse weight.
starving herself
derivative（衍生词）
suffer greatly frm lack f fd
starve t deathstarve sb int ding sth.be starved f sth.
part f speech
Q2: What implicatins can we get frm the news pht f a dead plar bear by referring t the diagram?
It shwed the increase in temperature had a negative impact n Earth’s eclgy.
eclgy n. the relatin f plants and living creatures t each ther and t their envirnment; the study f this 生态学；社会生态学
Eclgy helps us understand cmplex prblems.Oil pllutin culd damage the fragile eclgy f the cral reefs.
The prefix “ec” describe smething as being related t eclgy.
A. Heat enters the atmsphere.
D. Heat is trapped by green-huse gases.
B. Heat warms the earth’ surface as shrt-wave radiatin.
C. Heat is released back int space at lnger wave lengths
Q3: What is greenhuse effect?
Q:What are the cnsequence f high greenhuse gas emissins?
Heat is released back int space at lnger wave lengths.
release vt.& n. = set sb/sth freerelease sb/sth frm sthThe factry keeps __________ smke, making the air dirty.Smke keeps _______________ frm the factry, making the air dirty.
being released
Matching ExerciseFirefighters tk tw hurs t release the driver frm the wreckage.She asked her husband nt t release her arm while she was climbing up the muntain. She burst int tears, releasing all her pent-up(堆积起来) emtins.The club is releasing sme f its lder players.My idl will release a bk next mnth.
t free sb frm a duty, respnsibility, cntract, etc.t express feelings such as anger r wrry in rder t get rid f themt stp hlding sth r stp it frm being held s that it can mve freelyt let sb/sth cme ut f a place where they have been kept r trappedt make sth available t the public
Q4: Is the natural greenhuse effect imprtant fr Earth?
Yes, it’s very imprtant. Withut this prcess, Earth culd nt sustain life.
sustain verb. t prvide enugh f what smebdy /smething needs in rder t live r exist 维持生命、生存
哪些行星可以维持生命的存在？Which planet can sustain life?
Q5: What are the cnsequences f the rise in temperature?
There is a strng and cmprehensive evidence that the rise in temperature has led t an increase in extreme weather and naturaldisasters wrldwide, nt nly causing serius damage, but als csting human lives.
cmprehensive adj. including all the necessary facts, details, r prblems that need t be dealt with [SYN]thrugh cmprehensive examinatins cmprehensive insurance cmprehensive knwledge
Q6: What did climate scientists warn us if we dn’t 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.
trend 趋势；趋向；倾向；动态；动向trend in/twards sth.
1. There is _______________（增加的趋势）twards earlier retirement.2. 销售额上升、下滑的趋势a dwnward/an upward trend in sales3. The recrd has already prved a success and may well ____________. 该唱片已证明大获成功，并且很可能会引导潮流。4.确诊病例报告数量呈上升趋势。There has been an upward trend in the number f cnfirmed cases reprted.5. The article discusses ___________ (当前趋势) in language teaching.
a grwing trend
start a trend
current trends
bradcast vt.& vi. (bradcast, bradcast)播送(电视或无线电节目); 广播;传播（信息等） The cncert will be bradcast live tmrrw evening. I dn't like t bradcast the fact that my father wns the cmpany.bradcast n. 广播节目；电视节目a live bradcast f the cncert 音乐会的现场直播a news bradcast 一档新闻节目a live bradcast 现场直播
We as individuals can als reduce ur “carbn ftprint” by restricting the amunt f carbn dixide ur lifestyles prduce. It’s ur respnsibility t seize every pprtunity t educate everyne abut glbal warming, alng with its causes and impacts.
Q7: What shuld we as individuals d t reduce greenhuse gas emissins?
restrict vt. t limit the size, amunt r range f smething限制；限定；束缚 把……限制在……e.g. We shuld restrict the number f students t 10. restrict neself/sb t sth/t ding sth. 约束自己做某事；管束自己做某事e.g. I restrict myself t ne cup f cffee a day.restrictin n.限制restricted adj.有限的；受限制的restrictive adj.限制性的；约束的restrictively adv.限制（性）地，约束（性）地
(1)We restrict the number f students per class ____ 10.我们将每个班的学生人数限制在10人。(2)In thse days wmen led fairly __________ (restrict) lives.那时，妇女过着相当受限制的生活。(3)The gvernment has agreed t lift ___________(restrict) n press freedm.政府已经同意解除对新闻自由的限制。(4)They will hld a meeting t discuss the ___________(restrict) laws.他们将要开会讨论那些限制性的法律。(5) Access t the club ___________ t members nly.俱乐部仅对会员开放。
restrictins
restrictive
is restricted
seize vt. (1) t take smebdy/smething in yur hand suddenly and using frce抓住；夺取；控制seize sb. by the arm 抓住某人的胳膊seize n/upn 抓住；突然对……大为关注(2) take cntrl f a place r situatin 夺取，攻占，控制seize the airprt seize pwer in a military cup (3) (f an emtin 情绪) t affect sb suddenly and deeply 侵袭；突然控制Panic seized her.
(1)I was ready t pay fr my bananas at the grcery ne night，when fear seized me.一天晚上，我在杂货店里正准备付钱买香蕉时恐惧攫住了我。(2)I was walking in the street when a by suddenly seized me the arm.我正在街上走着，这时一个男孩抓住了我的胳膊。(3)Bb seized the rain as an excuse fr missing schl.鲍勃以下雨为借口不去上学。(4)It is said that the city which was seized by the enemy was very ld.It is said that the city was very ld.(用非谓语动词改写)
seized by the enemy
Build up yur vcabulary (P28)
1. Cmplete the sentences with the crrect frms f the wrds in the bx.
1. The Amazn basin, knwn as the “lungs f the wrld”, nt nly prvides sme __________ balance fr the planet, but als fd and resurces fr the lcal natives. 2. Thusands f baby penguins ________ t death because the changing climate frced their parents t leave them and travel lng distances in search f fd．
bradcast cmprehensive eclgy starve seize
3. Many experts link China’s ecnmic success t the_____________ refrm that China has undergne since 1978．4. The speaker said the media shuld make mre _________ that spread awareness f the climate crisis and pssible slutins.5. T deal with climate change, we must ________ the initiative t d whatever is necessary t prtect ur envirnment.
cmprehensive
2. Cmplete the passage with the crrect frms f the wrds in the bx.
Carbn dixide is _________ thrugh human activities such as destrying frests and burningfssil ________，as well as natural prcesses such as vlcanic eruptins. The measurementsby climate experts shw a rising ______f carbn dixide emissins. If this cntinues, urplanet will face further envirnmental disasters. ln respnse t this envirnmental issue, China is implementing significant ________ and measures t address climate change, aiming t ________cal cnsumptin, prmte a harmnius relatinship between man and nature, build a ___________energy system, and advcate a mderate, green, and lw-carbn lifestyle.
sustainable
fuel plicy release restrict sustain trend