Unit5 Working the Land Using language (ppt课件)-2022新人教版(2019)《高中英语》选择性必修第一册.pptx

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1、 Using Language:Using Language:chemical versus organic farminghybriddevotedevote.toshortage tacklecrisis n.杂交植(动)物;合成物;杂交植(动)物;合成物;混合动力车混合动力车vt.把把献(给);把献(给);把专用专用 于;于;专心于专心于把把用于;献身;致力;专心用于;献身;致力;专心n.不足;缺少;短缺不足;缺少;短缺vt.解决(难题);应付(局面);解决(难题);应付(局面);处理处理危机;危急关头危机;危急关头Words reviewboostyieldconvincecharac

2、teristic vt.使增长;使兴旺使增长;使兴旺 n.增长;提高;激励增长;提高;激励 n.产量;产出产量;产出 vt.出产(作物);产生(收出产(作物);产生(收 益、效益等)益、效益等)vi.屈服;让步屈服;让步 vt.使相信;使确信;说服使相信;使确信;说服 n.特征;特点;品质特征;特点;品质 adj.典型的;独特的典型的;独特的Words reviewattain conventionalpollinateassumption intenseovercomevt.(通常经过努力)获得;(通常经过努力)获得;得到得到adj.传统的;习惯的传统的;习惯的vt.授粉;传粉授粉;传粉n.

3、假定;设定;(责任的)假定;设定;(责任的)承担;(权利的)获得承担;(权利的)获得 adj.热切的;十分强烈的;热切的;十分强烈的;激烈的激烈的 vt.克服;解决;战胜克服;解决;战胜Words review expandoutputestimatedomesticconsumptioncomprisevt.&vi.扩大;增加扩大;增加vt.扩展;发展(业务)扩展;发展(业务)n.产量;输出;输出量产量;输出;输出量vt.输出输出vt.估计;估价;估算估计;估价;估算n.估计;估算估计;估算adj.本国的;国内的;家用的;本国的;国内的;家用的;家庭的家庭的n.消耗;消耗量;消费消耗;消耗量

4、;消费vt.包括;包含;由包括;包含;由组成组成Words reviewbe comprised ofgenerate strainleisuredeep downsoil包括;包含;由包括;包含;由组成组成(或构成)(或构成)vt.产生;引起产生;引起n.(动、植物的)系;品(动、植物的)系;品 种;拉伤;压力种;拉伤;压力n.闲暇;休闲;空闲闲暇;休闲;空闲在内心深处;本质上;在内心深处;本质上;实际上实际上n.泥土;土壤;国土;领土泥土;土壤;国土;领土 Words reviewcelebrityenvisionsorghum broomgrainvisionrealitysaltyur

5、bann.名望;名誉;名人;名流名望;名誉;名人;名流vt.展望;想象展望;想象n.高粱;高粱米高粱;高粱米n.扫把;扫帚;金雀花扫把;扫帚;金雀花n.谷物;谷粒;颗粒谷物;谷粒;颗粒n.想象;视力;视野;影像想象;视力;视野;影像n.现实;实际情况;事实现实;实际情况;事实adj.含盐的;咸的含盐的;咸的adj.城市的;都市的;城镇的城市的;都市的;城镇的Words reviewbombtunnelextensionchemicalwheatflavourfertilisernutritionaln.炸弹炸弹vt.轰炸;对轰炸;对投炸弹投炸弹n.地下通道;地道;隧道地下通道;地道;隧道n.扩

6、建部分;扩大;电话分机扩建部分;扩大;电话分机adj.与化学有关的;化学的与化学有关的;化学的n.化学制品;化学品化学制品;化学品n.小麦;小麦籽小麦;小麦籽n.味道;特点;特色味道;特点;特色n.肥料肥料adj.营养(物)的营养(物)的Words reviewnutritiousnutritionalleviatepovertyorganicpesticidewidespreadbacteriumin turn adj.有营养的;营养丰富的有营养的;营养丰富的n.营养;滋养营养;滋养vt.减轻;缓解减轻;缓解n.贫穷;贫困贫穷;贫困adj.有机的;不使用化肥的;有机的;不使用化肥的;有机物的

7、有机物的n.杀虫剂;除害药物杀虫剂;除害药物adj.分布广的;普遍的;分布广的;普遍的;广泛的广泛的n.细菌细菌相应地;转而;依次;轮流相应地;转而;依次;轮流 Words reviewdigestessential mineralalternativegroceryvt.&vi.消化消化vt.领会;领悟领会;领悟n.摘要;文摘摘要;文摘adj.完全必要的;极其重要的完全必要的;极其重要的n.矿物;矿物质矿物;矿物质n.可供选择的事物可供选择的事物adj.可供替代的;非传统的可供替代的;非传统的n.食品杂货店;食品杂货店;pl.食品杂货食品杂货Words reviewinstancefor i

8、nstancedepthrootentirelyaspectn.例子;实例;事例例子;实例;事例例如;比如例如;比如n.向下(或向里)的距离;向下(或向里)的距离;深(度)深(度)n.根;根茎;根部;根源根;根茎;根部;根源adv.全部地;完整地;完全地全部地;完整地;完全地 n.方面;层面方面;层面Words review VietnamLEDDDT越南(国家名)越南(国家名)abbr.(light-emitting diode)发光二极管发光二极管n.滴滴涕(旧时尤用作农业滴滴涕(旧时尤用作农业 杀虫剂)杀虫剂)Words reviewReading for WritingChemical

9、 Versus Organic FarmingIt is fertilizer.What is the substance we put on the soilto make crops grow?Pre-readingAChemical fertilizersWhat kind of fertilizers do farmers use?BNatural fertilizersNatural waste from animals and dead plantsWhat kind of fertilizers do farmers use?Its a product of organic fa

10、rming.AIts a product of chemical farming.BBNow,which one do you prefer?A1.in my eyes/in my opinion from my point of view My view/opinion is that.2.Id prefer.Id rather.Read and Think(organization)Title The _ and _ of chemical farming.benefitsproblemsPart 1:(Para 1&2)What organic farming is and _.how

11、it keep the soil richPart 2:(Para 3&4)Part 3:(Para 5)Conclusion bacteria and insectsprohibiteddamage they usegrow too fastnutritionnatural waste from animalsevery yeardifferent depthsdemand for food around the worldchange the kind of cropDACB1.Why did many farmers welcome the introduction of chemica

12、l farming?Many farmers welcomed them as a great way to fight crop diseases and increase production.2.What concerns many people about the use of pesticides?Their long-term use can sometimes harm both the land and peoples health.Para.1 3.What is one problem with the use of chemical fertilisers?Crops g

13、rown with them usually grow too fast to be rich in nutrition.Para.2 4.How is organic farming different from chemical farming?Organic farming is simply farming without using any chemicals.Organic farmers focus on keeping their soil rich and free of diseases through natural means.Para.3 5.Why do organ

14、ic farmers change the kind of crop grown in a field every year?Different crops are grown because they put important minerals back into the ground,making it ready for the next batch of crops.Para.4 6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?The g

15、oal of using different organic farming methods is to grow good food while avoiding damage to the environment or to peoples health.Para.4 Read for writing 1(useful expressions)_(化学农药和人工肥料)have been in widespread use in farming since the middle of the 20th century.When they were first introduced,many

16、farmers welcomed them as a great way to _ _(抵御作物病害、增加产量).Over time,however,what some scientists have found is that _ (长期使用它们有时会危害土地和人类健康).Chemical pesticides and artificial fertilizers disease and increase productiontheir long-term use can sometimes harm both the land and peoples healthPara 1CHEMICA

17、L VERSUS ORGANIC FARMINGfight cropRead for writing 1(useful expressions)For example,pesticides can damage the land by _(杀死有害细菌和昆虫的同时,也杀死有益的细菌和昆虫).In addition,these chemicals can stay in the soil and underground water sources for a long time.This affects the crops grown on the land and,_(继而影响消化这些作物的人

18、畜).Many people worry that these chemicals may _(致病,甚至引发癌症).In fact,some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environment.As for chemical fertilizers,crops grown with them usually _(生长过快而营养不足).They may look beautiful on the outs

19、ide,but inside there is usually more water than _(必需矿物质),and they often _(口感较差)as well.killing not only harmful bacteriain turn,the animals and humans who digest themmake them ill and even causegrow too fast to be rich in nutritionessential mineralshave less flavorPara 2CHEMICAL VERSUS ORGANIC FARMI

20、NGand insects,but also helpful onescancerRead for writing 1(useful expressions)_(作为一种替代方法),some farmers have switched to _(有机耕作),and many customers have turned to _(有机食品)when they shop at the local grocery.Organic farming is simply farming _ _(不使用任何化学品).Organic farmers focus on _ (通过天然的方法保持土壤肥沃,没有病害

21、).For example,many organic farmers use natural waste from animals as fertilizer.This _(使农田土壤富含矿物质).It also keeps the air,soil,water,and crops free of chemicals.As an alternativeorganic farmingorganic foodwithout using anykeeping their soil rich and free of disease through natural meansmakes the soil

22、 in their fields richer in mineralsPara 3CHEMICAL VERSUS ORGANIC FARMINGchemicalsRead for writing 1(useful expressions)Organic farmers also use many other methods to produce rich soil.They often _(每年更换每块农田种植的作物种类).For instance,they may grow corn or wheat in a field one year,and then grow beans there

23、 the next.Why different crops are grown is because they put important minerals back into the ground,making it ready for the next batch of crops.Organic farmers also _(种植土壤深度要求不同的多样化作物)to help keep it rich.For example,peanuts grow on the grounds surface,but many other vegetables put down deep roots.T

24、he goal of using different organic farming methods is to _(生产优质食物,同时避免损害环境和人类健康).change the kind of crop grown in each field every yearplant diverse crops that use differentgrow good food while avoiding damage to the environment or to peoples health.Para 4CHEMICAL VERSUS ORGANIC FARMINGdepths of soi

25、lRead for writing 1(useful expressions)Some people would prefer to stop the use of man-made chemicals in agriculture entirely.What keeps them from doing so is the fact that chemical farming _(满足了全世界对事物的高要求).Organic farming is nowhere near able to meet that need.Therefore,_(想要找到一个合适的解决方案,使人类和环境尽可能保持健

26、康,又让人们有足够的食物可吃,还有很长的路要走).serves the high demand for food around the worldsuitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible.Para 5CHEMICAL VERSUS ORGANIC FARMINGthere is still a long way to find aRead for writing 2(discours

27、e markers)Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century.When they were first introduced,many farmers welcomed them as a great way to fight crop disease and increase production.Over time,_,what some scientists have found is

28、that their long-term use can sometimes harm _ the land _ peoples health._,pesticides can damage the land by killing _ harmful bacteria and insects,_ helpful ones._,these chemicals can stay in the soil and underground water sources for a long time.This affects the crops grown on the land and,in turn,

29、the animals and humans who digest them.CHEMICAL VERSUS ORGANIC FARMINGhoweverbothandFor examplenot onlybut alsoIn additionRead for writing 2(discourse markers)CHEMICAL VERSUS ORGANIC FARMINGMany people worry that these chemicals may make them ill and even cause cancer._,some pesticides like DDT have

30、 been prohibited in most countries because of the damage they cause to people and the environment._ chemical fertilisers,crops grown with them usually grow too fast to be rich in nutrition.They may look beautiful on the outside,_ inside there is usually more water than essential minerals,_ they ofte

31、n have less flavour _._,some farmers have switched to organic farming,and many customers have turned to organic food when they shop at the local grocery.Organic farming is simply farming without using any chemicals.In factAs forbutandas wellAs an alternativeRead for writing 2(discourse markers)CHEMI

32、CAL VERSUS ORGANIC FARMINGOrganic farmers focus on keeping their soil rich and free of disease through natural means._,many organic farmers use natural waste from animals as fertiliser.This makes the soil in their fields richer in minerals.It _ keeps the air,soil,water,and crops free of chemicals.Or

33、ganic farmers _ use many other methods to produce rich soil.They often change the kind of crop grown in each field every year._,they may grow corn or wheat in a field one year,and then grow beans there the next._ _ they put important minerals back into the ground,making it ready for the next batch o

34、f crops.For examplealsoFor instancealsoWhy different crops aregrown is becauseRead for writing 2(discourse markers)CHEMICAL VERSUS ORGANIC FARMINGOrganic farmers _ plant diverse crops that use different depths of soil to help keep it rich._,peanuts grow on the grounds surface,_ many other vegetables

35、 put down deep roots.The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to peoples health.Some people would prefer to stop the use of man-made chemicals in agriculture entirely.What keeps them from doing so is the fact that chemical f

36、arming serves the high demand for food around the world.Organic farming is nowhere near able to meet that need._,there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible.For examplealsobutThere

37、fore however,but,on the contrary,instead,on one hand on the other hand for example,for instance,in fact,such as,take for example bothand,not onlybut also,in addition,and,also,as well,whats more,besides,furthermore,moreover,whats worsewhyis because,therefore,for this reason,thus,consequently,as a res

38、sultas for,as an alternativeRead for writing 2(discourse markers)contrast illustrate add cause and effectintroduce a new topic1.Is the author of the passage for or against organic farming?How do you know?Some people would prefer to stop the use of man-made chemicals in agriculture entirely.Organic f

39、arming is nowhere near able to meet that need.Therefore,there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible.Discussion2.What other disadvantages of organic farming can you think of?higher

40、cost of producing foodgreater effort required to farming 3.What is the text type?You need to state your own standpoint in an argumentative essay议论文议论文 on chemical or organic farming.发表议论就是通过议论或说理来表达作者的见解和主张,作者对某一问题持有一种看法,为了使读者同意自己的看法,提出若干理由,试图说服别人。发表议论时,我们要注意三个要素:论点、论据、论证。Write an argumentative essa

41、y giving your opinion on chemical or organic farming.Is the author of the passage for or against organic farming?How do you know?What other disadvantages of chemical farming did the author not list?How might the following items be problems and how important are they for organic farming?What other di

42、sadvantages of organic farming can you think of?Step 1 Discuss these questions in groups.Step 2 Decide whether your group supports chemical farming or organic farming.Topic sentence:In my opinion,_farming is preferable to _ farming because _ Point 1:_ (Detail)_Point 2:_ (Detail)_Point 3:_ (Detail)_C

43、onclusion:_ Step 3 Use your outline to write a short essay giving your opinion on the topic.Topic sentence:In my opinion,_farming is preferable to _ farming because _ Point 1:_ (Detail)_Point 2:_ (Detail)_Point 3:_ (Detail)_Conclusion:_Make a summaryOpinion Body Argument Evidence/Details(Use some si

44、gnposts.)Rephrase the opinionSample WritingIn my opinion,organic farming is preferable to chemical farming because of the benefts to the environment as to people,and because organic food is more nutritious.To begin with,chemical farming harms the environment.Since chemical pesticides are not found i

45、n nature,normal natural processes cannot get rid of them.Instead,the chemicals tend to accumulate in the soil and water,and are absorbed in the food chain,where they poison wildlife and domestic animals.This affects us directly,because we end up eating plants,dairy products,eggs,and meat that have h

46、igh levels of pesticides.Think about it:The purpose of the pesticides is to kill“pests”,that is,to kill insects.Something that can kill an insect probably is not healthy for a person to eat.While it may be true that the food we eat does not have enough pesticide in it to kill us immediately,over the

47、 years this pesticide may cause us health problems or give us diseases such as cancer.Finally,organic food is generally more nutritious than food grown with man-made chemicals.If you remember a few years ago,there was the case of watermelons literally exploding in the fields because they had been gi

48、ven chemicals to make them grow faster.The reason why they exploded was that they contained too much water,because the farmers had used too many chemicals and the weather was unusually wet.As it turns out,such chemicals are commonly used in farming to grow larger crops more quickly.Do you really wan

49、t to eat watered-down fruit and vegetables which have been rushed to market?They cannot possibly taste as good as organic vegetables,nor can they be as nutritious.In closing,I would like to suggest buying organic food.Yes,the price is a little higher,but the small price we pay extra will bring us huge rewards in the end.How to write an argumentative essaybrainstormpoints and detailsorganizationdiscourse markersargument

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