【课件】Unit+5+Using+Language+课件高二英语人教版（2019）选择性必修第一册.pptx

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1、UNIT 5 WORKING THE LAND Using Language:chemical versus organic farmingLearning objectivesIn this class we will:uTo know the meanings of chemical farming and organic farming.uTo know the advantages and disadvantages of both chemical farming and organic farming.uTo master some transitional words or ph

2、rases in the text.uTo express opinions on chemical farming and organic farming,and write an argumentative essay.I Love New WordsPART 01chemical 化学的。添加标题在此录入图表的综合描述说明，在此录入图表的综合描述说明。加标题添加标题添加标题添加标题chemical kemkl化学的化学的bacteria bktri细菌细菌pest pest害虫害虫production prdkn生产；制生产；制造造nutrition nutrn 营养营养mineral

3、mnrl矿物质矿物质 Warming upPART 02The steps to plant P在此添加标题在此添加标题fertilizefertilize ftlaz the soilsoil施肥施肥kill off the pestpest pestplow pla犁地犁地sow sa播种播种water the cropcrop krp rid rid the soil ofof the weedThe steps to plant have a harvest hrvst收获收获Organic FarmingOrganic farming is simply farming withou

4、t using any chemicals.Which tomatoes do you prefer?5 yuan/kg30 yuan/kgNormal tomatoesOrganic tomatoesWhats the main idea of the text?The text mainly talks about chemical farming and organic farming._ can cause many problems,as an alternative,some people switch to _.Chemical farmingorganic farmingOrg

5、anic farming is simply farming without using any chemicals.1.What is chemical farming?2.What is organic farming?Skim the text,and then answer the following questions.Chemical farming is farming using chemical pesticides and artificial fertilisers.1.What is the main idea of the text?(45 )A.Advantages

6、 and disadvantages of chemical farming and organic farming.B.Chemical pesticides can fight crop disease and increase production.C.Artificial fertilisers can harm both the land and peoples health.D.Organic farmers focus on keeping their soil rich and free of disease through natural means.AMatch the m

7、ain ideas(A-D)below with the paragraphs.A What organic farming is B Why man-made chemicals are still used in farming C Organic methods for producing rich soilD The problems with chemical farmingPara.1-2Para.3Para.4Para.5DACBbacteria and insectsprohibiteddamage they usegrow too fastnutritionnatural w

8、aste from animalsevery yeardifferent depthsdemand for food around the worldchange the kind of cropDACBRead and Think(organization)Title Text type:Exposition The _ and _ of chemical farming.benefitsproblemsPart 1:(Para 1&2)What organic farming is and _.how it keep the soil richPart 2:(Para 3&4)Part 3

9、:(Para 5)Conclusion 1.Why did many farmers welcome the introduction of chemical farming?2.What concerns many people about the use of pesticides?Para.1 Read the text,and then answer the questions on page 56.Read the text,and then answer the questions on page 56.1.Why did many farmers welcome the intr

10、oduction of chemical farming?2.What concerns many people about the use of pesticides?Many farmers welcomed them as a great way to fight crop diseases and increase production.Their long-term use can sometimes harm both the land and peoples health.Self-study 3.What is one problem with the use of chemi

11、cal fertilisers?Para.2 4.How is organic farming different from chemical farming?Para.3 Read the text,and then answer the questions on page 56.Read the text,and then answer the questions on page 56.3.What is one problem with the use of chemical fertilisers?4.How is organic farming different from chem

12、ical farming?Crops grown with them usually grow too fast to be rich in nutrition.Organic farming is simply farming without using any chemicals.Organic farmers focus on keeping their soil rich and free of diseases through natural means.5.Why do organic farmers change the kind of crop grown in a field

13、 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 Read the text,and then answer the questions on page 56.Read the text,and then answer the questions on page 56.5.Why do organic farmers change the kind of

14、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.6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?Para.4 Read the text,and then answer the q

15、uestions on page 56.Read the text,and then answer the questions on page 56.6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?The goal of using organic farming methods is to grow good food while avoiding damage to the environment or to peoples health.Ye

16、s,I think this goal can be reached because people tend to live a green and healthy life and they need organic farming to develop.chemical farming Thinkingorganicfarming advantagesdisadvantagesfight crop diseaseincrease productionlower costcrops look beautiful outside.good food avoiding damage to the

17、 environment or to peoples health.harm the land harm peoples healthharm the environmentcrops are less in nutrition.cannot meet the demand for foodmore efforts and higher costsmelly gases.however,but,on the contrary,instead,on one hand on the other hand for example,for instance,in fact,such as,take f

18、or 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 ressultas for,as an alternativeRead for writing 2(discourse markers)contrast illustrate add cause and effectintroduce a n

19、ew topicHow to write an argumentative essaybrainstormpoints and detailsorganizationdiscourse markersargumentchemical farming Thinkingorganicfarming advantagesdisadvantagesfight crop diseasefight crop diseaseincrease productionincrease productionlower costlower costcrops look beautiful crops look bea

20、utiful outsideoutside.good food good food avoiding damage to the avoiding damage to the environment or to peoples environment or to peoples healthhealth.harm the land harm the land harm peoples healthharm peoples healthharm the environmentharm the environmentcrops are less in nutritioncrops are less

21、 in nutrition.cannot meet the demand for cannot meet the demand for foodfoodmore efforts and higher more efforts and higher costcostsmelly gasessmelly gases.express your opinions:express your opinions:In my eyes In my eyes Im opposed to Im opposed to Id prefer because Id prefer because From my point

22、 of view,From my point of view,What I firmly believe in is thatWhat I firmly believe in is thatmake a conclusion:make a conclusion:In summary,In summary,In a word,In a word,All in all,All in all,To sum up,To sum up,chemical farming organic farming chemical fertilizers natural fertilizersOrganic Farm

23、ingWriting Task近年来，媒体对近年来，媒体对“农业可持续发展农业可持续发展”“”“食品安全食品安全”等问题等问题作作了一些报道，引发了许多讨论，了一些报道，引发了许多讨论，到底哪种农业种植方式有利于到底哪种农业种植方式有利于农业可持续发展并解决食品安全问题呢？农业可持续发展并解决食品安全问题呢？如某英语报记者对你如某英语报记者对你进行采访，征求对此现象的看法，请用英语进行采访，征求对此现象的看法，请用英语写一篇议论文，表写一篇议论文，表达自己的观点，并说明理由达自己的观点，并说明理由。Brainstorm organization 1ArgumentPoint 1Point 2P

24、oint 3ConclusionPart 1Part 2Part 3detailsdetailsdetailsdetailschemical farming Thinkingorganicfarming advantagesdisadvantagesfight crop diseasefight crop diseaseincrease productionincrease productionlower costlower costcrops look beautiful crops look beautiful outsideoutside.good food good food avoi

25、ding damage to the avoiding damage to the environment or to peoples environment or to peoples healthhealth.harm the land harm the land harm peoples healthharm peoples healthharm the environmentharm the environmentcrops are less in nutritioncrops are less in nutrition.cannot meet the demand for canno

26、t meet the demand for foodfoodmore efforts and higher more efforts and higher costcostsmelly gasessmelly gases.Recently,Recently,we we have have had had a a heated heated discussion discussion aboutabout_._.Different Different people,people,however,however,have have different different opinions opin

27、ions on on this this mattermatter.SomeSome peoplepeople areare inin favour favour ofof /agree agree /supportsupport_._.They They think it can_.Moreover,it _think it can_.Moreover,it _However,However,some some people people are are against against it.it.They They argue argue that_.Whats more,.that_.W

28、hats more,.as as far far as as I I am am concerned,concerned,Im Im convinced convinced that_.that_.Because_,.Then.Because_,.Then.1.chemical pesticides2.artificial fertiliser3.be in use in sth.4.long-term use5.over time6.organic farming1.化学农药化学农药2.人工肥料人工肥料3.在在.应用中应用中4.长期使用长期使用5.随着时间推移随着时间推移6.有机耕种有机耕种

29、Para 1 phrases1.damage the land2.harmful bacteria and insects3.underground water sources4.essential minerals5.in turn6.cause damage to sb.7.be rich in8.as well 9.as for1.破环土地2.有害的细菌和昆虫3.地下水资源4.必需矿物质，主要矿物5.相应地，依次，轮流6.对某人造成伤害7.富含.8.也9.关于，至于Para 2 phrases1.switch to2.turn to3.local grocery4.keep their

30、soil rich5.free of disease6.through natural means7.keep A free of B1.转向转向2.转向转向3.当地的百货店当地的百货店4.保持土壤肥沃保持土壤肥沃5.免受病害免受病害6.通过自然方法通过自然方法7.使使A摆脱摆脱BPara 3 phrases1.grow corn or wheat2.grow beans3.the next batch of crops4.plant diverse crops5.grounds surface6.avoid damage to1.种玉米或小麦种玉米或小麦2.种豆种豆3.下一批谷物下一批谷物4.种植多样化的作物种植多样化的作物5.土地表面土地表面6.避免避免.的伤害的伤害Para 4 phrasesTHANKSTHANKSTHANKSTHANKS