Unit 2 Period One.pptx

1、Unit 2 The environment,The need to feed a growing population is putting much pressure on the worlds supply of water.With 97% of the worlds water too salty to be drunk or used in agriculture，the worldwide supply of water needs careful management，especially in agriculture.Although the idea of a water

2、shortage seems strange to someone fortunate enough to live in a high rainfall country，many of the worlds agricultural industries experience constant water shortages.,話題導(dǎo)入,Although dams can be built to store water for agricultural use in dry areas and dry seasons，the costs of water redistribution(重新分

3、配) are very high.Not only is there the cost of the engineering itself，but there is also an environmental cost to be considered.Where valleys are flooded to create dams，houses are lost and wildlife homes destroyed.Besides，water may flow easily through pipes to fields，but it cannot be transported from

4、 one side of the world to the other.Each country must therefore rely on the management of its own water to supply its farming requirements.,This is particularly troubling for countries with agricultural industries in areas dependent on irrigation. In Texas，farmers overuse of irrigation water has res

5、ulted in a 25% reduction of the water stores.In the Central Valley area of southwestern USA，a huge water engineering project provided water for farming in dry valleys，but much of the water use has been poorly managed.,Saudi Arabias attempts to grow wheat in desert areas have seen the pumping of huge

6、 quantities of irrigation water from underground reserves.Because there is no rainfall in these areas，such reserves can only decrease，and it is believed that fifty years of pumping will see them run dry.,根據(jù)上文完成下列各題 1.Why does the worldwide supply of water need careful management? 2.What is most like

7、ly to be discussed in the paragraph that follows? 3.Whats the text mainly about?,Water supply.,Because 97% of the worlds water is too salty to be drunk or used in agriculture.,Steps to improve water use management.,答案,Period OneWelcome to the unit & Reading,基礎(chǔ)自測(cè) 自主學(xué)習(xí) 落實(shí)基礎(chǔ)知識(shí),課文預(yù)讀 回歸教材 萃取文本主旨,要點(diǎn)探究 探究重

8、點(diǎn) 互動(dòng)撞擊思維,基礎(chǔ)自測(cè) 自主學(xué)習(xí) 落實(shí)基礎(chǔ)知識(shí),1. n.顧問(wèn) 2. n.& vi.辯論；爭(zhēng)論，討論 3. vi.流動(dòng)，流暢地進(jìn)行； n.流動(dòng)；連貫 4. n.責(zé)任，義務(wù)，本分 5. n.產(chǎn)量；生產(chǎn) vt.生產(chǎn) n.產(chǎn)品 adj.多產(chǎn)的,答案,consultant debate flow duty production produce product productive,重點(diǎn)單詞,答案,6. vt.& vi.回收利用 7. adj.貪婪的，貪心的 n.貪婪；貪心 8. n.責(zé)任，職責(zé) adj.有責(zé)任的 9. n.看法；信念 v.相信 10. adj.環(huán)境的 n.環(huán)境,recycle gr

9、eedy greed responsibility responsible belief believe environmental environment,答案,11. vt.&vi.經(jīng)營(yíng)；動(dòng)手術(shù) n.管理；手術(shù) 12. n.贊揚(yáng)，稱贊，認(rèn)可；信用，信譽(yù)；學(xué)分 13. n.數(shù)量 n.質(zhì)量；品質(zhì) 14. adj.愿意的，樂(lè)意的 adj.不情愿，不愿意；勉強(qiáng)的，無(wú)奈的 15. vt.& vi.用泵(或泵樣器官等)輸送；涌出，涌流,operate operation credit quantity quality willing unwilling pump,答案,1.自由發(fā)言 2.流入 3.也

10、4.減少，縮減，削減 5.用盡 6.用完，耗盡,open the floor flow into as well cut back on use up run out (of),重點(diǎn)短語(yǔ),1.，we keep producing more and more people who need more land to live on and more food to eat! ，我們的人口越來(lái)越多，而這些人口又需要更多的土地賴以生存，需要吃更多的食物！ 2.The worlds population has grown by six times what it was in 1800. 目前的世界

11、人口數(shù)量已是1800年的6倍。 3.However，I do agree that we produce more things from materials that have been recycled，. 但是，我非常贊同我們應(yīng)該更多地利用回收材料制造產(chǎn)品，,好句積累,返回,4.What we need are better laws to preserve the environment and still allow our country to grow. 我們需要更有效的法律來(lái)保護(hù)環(huán)境，同時(shí)促進(jìn)經(jīng)濟(jì)發(fā)展。 5.What if they run out? 它們用完了會(huì)怎么樣呢？,課

12、文預(yù)讀 回歸教材 萃取文本主旨,1,2,4,3,5,答案,1.What is the focus of the debate according to the text? A.Developing economy is the most important. B.Preserving the environment is the most important. C.The relationship between the environment and the economy. D.The factories which cause much pollution to the environm

13、ent should pay higher taxes. 答案C,課文閱讀理解,答案,2.According to Lin Shuiqing，there are mainly causes responsible for the environmental destruction. A.five B.two C.three D.four,1,2,4,3,5,C,答案,3.We can infer that both sides agree on the point that . A.people should cut back on production and reduce the amou

14、nt of things we make and buy B.recycling will help in both the fields of economy and environment C.it is very important to reduce the amount of jobs D.we need more effective laws to preserve the environment,1,2,4,3,5,B,答案,4.A business development consultant is often seen as the environment，but in fa

15、ct they often work with many environmental consultants. A.being for；side by side B.being in；hand in hand C.being at；against D.being against；side by side,1,2,4,3,5,D,答案,5.We can predict that the debating show would be probably part of a(n) programme. A.economics B.entertainment C.films and plays D.mi

16、litary,1,2,4,3,5,A,答案,課文閱讀填空,host,Suggestions/Advice,答案,damaging,killing,caught,population,friendly,答案,development,preserve,taxes,答案,課文閱讀簡(jiǎn)答,1.What side does Ms Lin Shuiqing and Mr Qian Liwei each represent? 2.By how many times has the worlds population increased since 1800? 3.According to Mr Qian Li

17、wei，what should be done to factories that pollute the environment?,Ms Lin represents the society for Environmental Preservation while Mr Qian is an economist.,More than six times.,Those factories should have to pay higher taxes.,返回,要點(diǎn)探究 探究重點(diǎn) 互動(dòng)撞擊思維,Todays debate question is.今天的辯題是,1.,歸納拓展 debate n.&

18、vi.辯論；爭(zhēng)論，討論 under debate正在辯論中 beyond debate無(wú)可爭(zhēng)辯 注意：debate作動(dòng)詞時(shí)，后接名詞、動(dòng)名詞或連接代(副)詞引起的不定式短語(yǔ)，不接that從句。,重點(diǎn)單詞,易混辨析debate，argue，discuss (1)debate爭(zhēng)論，辯論，討論，指正式的、慎重的辯論和爭(zhēng)論。通常由評(píng)判人裁決或按規(guī)則進(jìn)行，由雙方各自申述理由，“交鋒”意味較強(qiáng)。 (2)argue爭(zhēng)論，論證，以說(shuō)理的方式擺出觀點(diǎn)，或以激烈的爭(zhēng)論方式交換意見(jiàn)，以致?tīng)?zhēng)吵。 (3)discuss討論，商討；辯論，重在交換意見(jiàn)、進(jìn)行討論，不含有意說(shuō)服對(duì)方的意味。,語(yǔ)境助記 (1)He likes

19、to debate issues with his friends. 他喜歡跟朋友辯論各種問(wèn)題。 (2)The proposal is under debate. 那個(gè)提議還在討論當(dāng)中。 (3)They are arguing with each other about money. 他們正在為錢爭(zhēng)吵。 (4)Ill discuss the problem with him later. 我等一會(huì)兒再跟他討論這個(gè)問(wèn)題。,題組訓(xùn)練 (1)By now，who is winning is (無(wú)可爭(zhēng)辯). (2)He that the experiment could be done in anot

20、her way. A.debated B.argued C.discussed D.quarrelled 解析句意為：他爭(zhēng)辯說(shuō)可以用另外一種方法做這個(gè)實(shí)驗(yàn)。argue可接that從句，其他三項(xiàng)通常不接that從句。,B,beyond debate,解析答案,They think of greedy businessmen hiding from their responsibilities and only worrying about money. 他們會(huì)聯(lián)想到那些對(duì)環(huán)境保護(hù)逃避責(zé)任，只想著賺錢的貪婪的商人。,2.,歸納拓展 (1)responsibility n.責(zé)任；職責(zé) have re

21、sponsibility for對(duì)有責(zé)任；對(duì)負(fù)責(zé) a sense of responsibility責(zé)任感 (2)responsible adj.負(fù)責(zé)任的，有責(zé)任心的 be responsible for對(duì)負(fù)責(zé)；是的原因 be responsible to sb.對(duì)某人負(fù)責(zé),語(yǔ)境助記 (1)You have responsibility for clearing up the classroom after class. 下課后你負(fù)責(zé)打掃教室。 (2)But we just have to be responsible to ourselves. 但是，我們只需要對(duì)自己負(fù)責(zé)。,題組訓(xùn)練 (1)

22、The boy，rather than his friends， the accident. 這場(chǎng)事故是這個(gè)男孩的責(zé)任，而非他朋友的責(zé)任。 (2)Personally speaking，I think it is of great importance to have . 就個(gè)人而言，我認(rèn)為有一種責(zé)任感是非常重要的。,is responsible for,a sense,答案,of responsibility,(3)She has already tried her best and she is for her job.Please dont be too about it. A.resp

23、onsibility；special B.responsible；responsible C.responsibly；unusual D.responsible；particular 解析be responsible for對(duì)負(fù)責(zé)任；be particular about對(duì)挑剔。,D,解析答案,People often have this belief that development is bad for the environment，but this does not have to be true. 人們常常認(rèn)為經(jīng)濟(jì)發(fā)展對(duì)環(huán)境有害，但這不一定是正確的。,3.,歸納拓展 (1)belie

24、f n.看法，信念 have belief in對(duì)有信心 beyond belief難以置信的 (2)believe v.相信 believe it or not信不信由你,語(yǔ)境助記 (1)I have much belief in his honesty. 我非常相信他的誠(chéng)實(shí)。 (2)Believe it or not，I will marry Mary next month! 信不信由你，我和Mary下個(gè)月就要結(jié)婚了！,題組訓(xùn)練 (1) (真令人難以置信) he could be so foolish! (2)I asked my boss for a months holiday and

25、， ，she agreed. A.believing or not B.that is to say C.believe it or not D.to believe it or not 解析句意為：我向老板請(qǐng)了一個(gè)月的假，信不信由你，她同意了。believe it or not信不信由你。,Its beyond belief that,C,解析答案,The people operating these factories are deeply concerned about the environment. 這些工廠的經(jīng)營(yíng)者非常關(guān)心環(huán)境。,4.,歸納拓展 (1)operate vt.經(jīng)營(yíng)，管

26、理；操作；vi.動(dòng)手術(shù)；運(yùn)轉(zhuǎn)；起作用，見(jiàn)效 operate on sb.(for.) (因某病)給某人動(dòng)手術(shù) (2)operation n.運(yùn)轉(zhuǎn)，運(yùn)行，操作 come/go into operation生效，實(shí)行,語(yǔ)境助記 (1)This machine is very easy to operate. 這機(jī)器操作很簡(jiǎn)單。 (2)Doctors decided to operate on the patient at once. 醫(yī)生們決定立刻對(duì)病人動(dòng)手術(shù)。 (3)The new rules come into operation from next week. 這些新的規(guī)則將從下個(gè)星期起生效

27、。,題組訓(xùn)練 (1) according to the instructions，the robot can behave like a human being with average IQ. A.When to operate B.When operating C.When to be operated D.When operated 解析句意為：當(dāng)根據(jù)說(shuō)明書(shū)操作時(shí)，機(jī)器人的行為可以像普通智商的人類。句中operate與邏輯主語(yǔ)the robot為被動(dòng)關(guān)系，故用過(guò)去分詞。故D項(xiàng)正確。,D,解析答案,(2)Difficult in practice，this new technique ha

28、snt been applied. A.operated B.to be operated C.operating D.to operate 解析句意為：因?yàn)檫@種新技術(shù)很難在實(shí)踐中操作，所以它沒(méi)有被應(yīng)用。此處相當(dāng)于because it is difficult to operate in practice，省略because it is之后就變成了 difficult to operate in practice。,D,解析答案,Ms Lin suggested we should cut back on the quantity of things we produce in order t

29、o save the environment. 林女士建議我們應(yīng)當(dāng)縮減生產(chǎn)量來(lái)拯救環(huán)境。,5.,歸納拓展 quantity n.數(shù)量 in quantity大量，大批，許多 quantities of名詞謂語(yǔ)動(dòng)詞復(fù)數(shù)許多 a quantity of名詞復(fù)數(shù)謂語(yǔ)動(dòng)詞復(fù)數(shù)/不可數(shù)名詞謂語(yǔ)動(dòng)詞單數(shù)大量,語(yǔ)境助記 (1)The steel works supplied us with raw material in large quantities. 那家鋼鐵廠給我們提供了大量原材料。 (2)Huge quantities of oil were shipped to Japan last year.

30、 去年大量的石油被用船運(yùn)往了日本。 (3)A large quantity of food has been supplied to the flooded area. 大量的食品被提供給了洪水受災(zāi)地區(qū)。,題組訓(xùn)練 (1)用所給詞的正確形式填空 A quantity of land (be) wasted while quantities of victims (be) starving. (2)Why does the river smell terrible? Because large quantities of water . A.have pollutedB.is being pol

31、luted C.has been pollutedD.have been polluted 解析句意為：這條河的河水為什么發(fā)臭??？因?yàn)榇罅康暮铀晃廴玖?。large quantities of water中是large quantities作主語(yǔ)，故謂語(yǔ)動(dòng)詞用復(fù)數(shù)形式。選項(xiàng)D正確。,is,are,解析答案,D,Asking around，I find many people willing to pay a little higher price for things that are friendly to the environment. 詢問(wèn)了周圍的人，我發(fā)現(xiàn)很多人愿意付高一點(diǎn)兒的價(jià)格買

32、環(huán)境友好型商品。,6.,歸納拓展 (1)willing adj.愿意的，樂(lè)意的 be willing to do sth.愿意做某事 (2)unwilling adj.不愿意的 be unwilling to do sth.不愿意做某事,語(yǔ)境助記 (1)If you are in trouble，Mike is always willing to lend a hand. 如果你有困難，邁克是很樂(lè)意向你伸出援手的。 (2)Is there any man unwilling to fight in defence of his country? 難道有誰(shuí)不愿為保衛(wèi)自己的國(guó)家而戰(zhàn)嗎？,題組訓(xùn)練

33、(1)Do you know if Linda take charge of the program? 你知道琳達(dá)是否愿意負(fù)責(zé)這個(gè)項(xiàng)目嗎？ (2) to accept his offer，she politely said that she could manage it by herself. A.Willingly B.Willing C.Unwillingly D.Unwilling 解析句意為：因?yàn)椴辉敢饨邮芩膸椭?，她禮貌地說(shuō)她自己可以解決。unwilling不愿意的，不情愿的，在句中作原因狀語(yǔ)。,is willing to,D,解析答案,Then we will open the

34、floor for discussion. 之后我們將展開(kāi)自由討論。,1.,歸納拓展 open the floor自由發(fā)言 take the floor發(fā)言 have/get the floor取得發(fā)言權(quán) give the floor to sb.讓某人發(fā)言,重點(diǎn)短語(yǔ),語(yǔ)境助記 (1)Now lets open the floor. 現(xiàn)在我們自由發(fā)言。 (2)After they each had said a few words，Professor White took the floor. 他們每個(gè)人說(shuō)了幾句話之后，懷特教授開(kāi)始發(fā)言。 (3)The president didnt give

35、 me the chance to have the floor. 主席沒(méi)有給我發(fā)言的機(jī)會(huì)。,題組訓(xùn)練 (1) (誰(shuí)發(fā)言) isnt important to us. (2)Whom will the headteacher give the to in the class meeting tomorrow? Yang Xiaohuiour monitor. A.words B.order C.floor D.discussion 解析give the floor to sb.讓某人發(fā)言。,C,Who will take the floor,解析答案,It is our duty to try

36、 to cut back on production and reduce the number of things we make and buy. 削減生產(chǎn)量，減少我們制造和購(gòu)買東西的數(shù)量都是我們的責(zé)任。,2.,歸納拓展 cut back on減少，削減，縮減 cut down削減，縮減；砍倒 cut in插入；插話；插隊(duì)；超車 cut o sth.把切成 cut off切斷，中斷 cut out剪掉；戒掉；停止；刪除,語(yǔ)境助記 (1)The doctor advised you to cut back on smoking. 醫(yī)生建議你少吸煙。 (2)In order to

37、 save money，they wanted to cut back on the cost. 為了節(jié)省資金，他們想削減成本。 (3)They were cut off from the outside world because of the storm. 由于暴風(fēng)雨，他們被切斷了與外界的聯(lián)系。,答案,題組訓(xùn)練 (1)用適當(dāng)?shù)慕?、副詞填空 First，cut the meat small pieces. They cut the big tree. Dont cut when others are talking. I must cut smoking.,into,down,in,out,

38、(2)If you completely foods and drinks that you love, youll only set yourself up to go on a large amount of those items later. A.take out B.cut out C.give out D.put out 解析句意為：如果你完全停止你喜歡的飲料與食物，你只會(huì)導(dǎo)致自己在以后吃得更多。take out拿出；cut out 停止；give out分發(fā)；put out撲滅。,B,解析答案,The number of people in the world keeps gro

39、wing，and we are producing more rubbish and using up more raw materials. 世界人口不斷增長(zhǎng)，我們制造的垃圾越來(lái)越多，并且即將用盡更多的原材料。,3.,歸納拓展 use up用完，一般用人作主語(yǔ) run out一般以物作主語(yǔ)，表示該物已用光，以主動(dòng)形式表示被動(dòng)意義(be used up意義與run out相同) run out of后接用光物品的名詞，主語(yǔ)則是人或地區(qū),語(yǔ)境助記 (1)Who has used up/run out of the oil? 誰(shuí)用光了石油？ (2)We should store some mone

40、y before the money runs out. 趁著沒(méi)把錢用光我們應(yīng)當(dāng)存一些。,答案,題組訓(xùn)練 (1)一句多譯 汽油已經(jīng)用光了。 The petrol . The petrol . We .,has run out,has been used up,have run out of/used up the petrol,(2)Food supplies in the earthquake area .We must act immediately before theres none left. A.are being run out B.are running out C.have

41、run out D.have been run out 解析run out用完，用盡，無(wú)被動(dòng)形式，排除A、D兩項(xiàng)。根據(jù)后半句可知食物快用完了，故用現(xiàn)在進(jìn)行時(shí)表將來(lái)。,B,解析答案,The worlds population has grown by six times what it was in 1800. 目前世界人口數(shù)量已是1800年的6倍。,1.,經(jīng)典句式,歸納拓展 倍數(shù)表達(dá)法： 英語(yǔ)中倍數(shù)主要由“基數(shù)詞times”表示，“兩倍”用twice。常用以下三種句型： (1)倍數(shù)what從句 (2)倍數(shù)as.as,(3)倍數(shù)比較級(jí)than (4)倍數(shù)the size/height.of.,語(yǔ)

42、境助記 (1)This hall is five times bigger than our classroom. 這個(gè)大廳比我們的教室大5倍。 (2)The production this year is five times what it was ten years ago. 今年的產(chǎn)量是十年前的五倍。 (3)The car factory can produce 3 times what it did five years ago. 這家轎車廠現(xiàn)在的產(chǎn)量是五年前的三倍。,題組訓(xùn)練 (1)一句多譯 亞洲是歐洲的四倍大。 Asia is of Europe. Asia is as Euro

43、pe. Asia is than Europe.,four times the size,答案,four times as large,three times larger,(2)In the Asian Games in South Korea，the Chinese team won gold medals as Japan. A.more than 3 times as many B.3 times more than as C.as many more than 3 times D.as more than 3 times 解析句意為：在韓國(guó)的亞運(yùn)會(huì)上中國(guó)隊(duì)贏得的金牌是日本隊(duì)贏得金牌的

44、三倍多。根據(jù)英語(yǔ)中的倍數(shù)表達(dá)法句型結(jié)構(gòu)：Abe倍數(shù)as形容詞asB，判斷選A。,A,解析答案,However，I do agree that we produce more things from materials that have been recycled，. 但是，我非常贊同我們應(yīng)該更多地利用回收材料制造產(chǎn)品，,2.,歸納拓展 “do/does/did動(dòng)詞原形”構(gòu)成強(qiáng)調(diào)句，意為“確實(shí)，的確”，用來(lái)加強(qiáng)謂語(yǔ)動(dòng)詞的語(yǔ)氣，但須符合以下條件： (1)句子是肯定句； (2)句子的時(shí)態(tài)為一般現(xiàn)在時(shí)或一般過(guò)去時(shí)。,語(yǔ)境助記 (1)To my great joy，the plant did look exactly like what we were loo