(江苏专用)牛津译林版高中英语必修5:Unit2 Period One课件
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1、Unit 2 The environment,话题导入,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 w
2、ater shortage seems strange to someone fortunate enough to live in a high rainfall country,many of the worlds agricultural industries experience constant water shortages.,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 homes of wildlife are destroyed.Besides,water may flow easily through pipes to fields,but it cannot be transport
4、ed from 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 h
5、as resulted 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 o
6、f huge 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.,根据上文完成下列各题 1.Why does the worldwide supply of water need careful management? _ _ 2.What is
7、 most likely to be discussed in the paragraph that follows?3.Whats the text mainly about?,Because 97% of the worlds water is too salty to be drunk or used in agriculture.,Steps to improve water use management.,Water supply.,基础自测,课文预读,内容索引,要点探究,当堂达标,Period One Welcome to the unit & Reading,基础自测,1. n.
8、顾问 2. n.& vi.辩论;争论,讨论 3. vi.流动,流畅地进行n.流动;连贯 4. n.责任,义务,本分 5. n.产量;生产vt.生产n.产品adj.多产的,.重点单词,consultant,debate,flow,duty,production,produce,product,productive,6. vt.& vi.回收利用 7. adj.贪婪的,贪心的n.贪婪;贪心 8. n.责任,职责adj.负责任的 9. n.看法;信念v.相信 10. adj.环境的n.环境,recycle,greedy,greed,responsibility,responsible,belief,
9、believe,environmental,environment,11. vt.& vi.经营;动手术n.管理;手术 12. n.赞扬,称赞,认可;信用,信誉;学分 13. n.数量n.质量;品质 14. adj.愿意的,乐意的adj.不情愿,不愿意;勉强的,无奈的 15. vt.& vi.用泵(或泵样器官等)输送;涌出,涌流n.泵;抽水机;打气筒,operate,operation,credit,quantity,quality,willing,unwilling,pump,.重点短语 1. 自由发言 2. 流入 3. 也 4. 减少,缩减,削减 5. 用尽 6. 用完,耗尽,open t
10、he floor,flow into,as well,cut back on,use up,run out (of),The worlds population has grown by in 1800. 目前的世界人口数量比1800年增长了6倍。However,I that we should produce more things from materials that have been recycled,. 但是,我非常赞同我们应该更多地利用回收材料制造产品,,six times what it was,do agree,1.倍数表达法,2.do表强调的用法,.重点句式,_we nee
11、d are better laws to preserve the environment and still allow our country to grow. 我们需要更有效的法律来保护环境,同时保障我们国家的发展。they run out? 它们用完了会怎么样呢?,What,What if,3.what引导主语从句,4.what if.,课文预读,1,2,3,4,.课文阅读理解,1.What is the focus of the debate according to the text? A.Developing economy is the most important. B.Pr
12、eserving the environment is the most important. C.The relationship between the environment and the economy. D.The factories which cause much pollution to the environment should pay higher taxes.,答案,5,2.According to Lin Shuiqing,there are mainly causes responsible for the environmental destruction. A
13、.five B.two C.three D.four,答案,1,2,3,4,5,3.We can infer that both sides agree on the point that . A.people should cut back on production and reduce the amount 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 j
14、obs D.we need more effective laws to preserve the environment,答案,1,2,3,4,5,4.A business development consultant is often seen as the environment,but in fact 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
15、 side,答案,1,2,3,4,5,5.We can predict that the debating show would be probably part of a(n) programme. A.economics B.entertainment C.films and plays D.military,答案,1,2,3,4,5,.课文阅读填空,host,Suggestions/Advice,damaging,killing,caught,friendly,population,friendly,development,preserve,taxes,.课文阅读简答,1.What si
16、de 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 Liwei,what should be done to factories that pollute the environment?,Ms Lin represents the society for Environmental Preservation while Mr Qian is
17、an economist.,More than six times.,Those factories should have to pay higher taxes.,要点探究,重点词汇,经典句式,难句分析,debate n.& vi.辩论;争论,讨论 under debate正在辩论中 beyond debate无可争辩 注意:debate作动词时,后接名词、动名词或连接代(副)词引起的不定式短语,不接that从句。,Todays debate question is. 今天的辩题是,归纳拓展,重点词汇,debate,argue,discuss (1)debate争论,辩论,讨论,指正式的、
18、慎重的辩论和争论。通常由评判人裁决或按规则进行,由双方各自申述理由,“交锋”意味较强。 (2)argue争论,论证,以说理的方式摆出观点,或以激烈的争论方式交换意见,以致争吵。 (3)discuss讨论,商讨;辩论,重在交换意见、进行讨论,不含有意说服对方的意味。,易混辨析,(1)U.S.second presidential debate sees the number of social media viewers soar while TV audience decline. 第二场美国总统辩论见证了社交媒体观众数目飙升而电视观众数目有所下降。 (2)The proposal is un
19、der debate. 那个提议还在讨论当中。 (3)They are arguing with each other about money. 他们正在为钱争吵。 (4)Ill discuss the problem with him later. 我等一会儿再跟他讨论这个问题。,语境助记,(1)By now,who is winning is (无可争辩).,题组训练,beyond debate,(2)He that the experiment could be done in another way. A.debated B.argued C.discussed D.quarrelle
20、d,答案,解析,句意为:他争辩说可以用另外一种方法做这个实验。argue可接that从句,其他三项通常不接that从句。,open the floor自由发言 take the floor发言 have/get the floor取得发言权 give the floor to sb.让某人发言,Then we will open the floor for discussion. 之后我们将展开自由讨论。,归纳拓展,(1)Now lets open the floor. 现在我们自由发言。 (2)After they each had said a few words,Professor Wh
21、ite took the floor. 他们每个人说了几句话之后,怀特教授开始发言。 (3)The president didnt give me the chance to have the floor. 主席没有给我发言的机会。,语境助记,题组训练,(1) (谁发言) isnt important to us.,Who will take the floor,(2)Whom will the headteacher give the to in the class meeting tomorrow? Yang Xiaohuiour monitor. A.words B.order C.fl
22、oor D.discussion,答案,解析,give the floor to sb.让某人发言。,cut back on减少,削减,缩减 cut down削减,缩减;砍倒 cut in插入;插话;插队;超车 cut sth.into sth.把切成 cut off切断,中断 cut out剪掉;戒掉;停止;删除,It is our duty to try to cut back on production and reduce the number of things we make and buy. 削减生产量,减少我们制造和购买东西的数量都是我们的责任。,归纳拓展,(1)In orde
23、r to save money,they wanted to cut back on the cost. 为了节省资金,他们想削减成本。 (2)They were cut off from the outside world because of the storm. 由于暴风雨,他们被切断了与外界的联系。,语境助记,题组训练,(1)用适当的介、副词填空 First,cut the meat small pieces. They cut the big tree. Dont cut when others are talking. I must cut smoking.,into,down,i
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