Unit 5 Using Language Writing （ppt课件）-2022新人教版（2019）《高中英语》选择性必修第一册.pptx

1、Unit5 Working The Land-Reading For Writing 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；制造生产；制造nutrition nutrn 营养营养mineral 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fertilize

2、 ftlaz the soil施肥施肥kill off the pest pestplow pla犁地犁地sow sa播种播种water the crop krp rid the soil of the weedThe steps to plant have a harvest hrvst收获收获Reading PartPART 03fertilizer ftlaz(r)肥料肥料chemical farming organic farmingBetter？1.What is the text about?Chemical farming Organic nk farming picturest

3、itle2.What type of writing is it?A.Narration(记叙文)B.Exposition(说明文)C.Argumentation(议论文)Match the main ideas(A-D)below with the paragraphs.ParagraphMain idea1-2345BCADA.What organic farming is B.Why man-made chemicals are still used in farming C.Organic methods for producing rich soil D.The problems w

4、ith chemical farmingChemical pesticides and artificial fertilisers have been in widespread use in farming 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,however,what some scientists have

5、 found is that their long-term use can sometimes harm both the land and peoples health.For example,pesticides can damage the land by killing not only harmful bacteria and insects,but also helpful ones.In addition,these chemicals can stay in the soil and underground water sources for a long time.This

6、 affects the crops grown on the land and,in turn,the animals and humans who digest them.Many people worry that these chemicals may make them ill and even cause cancer.In fact,some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the environmen

7、t.As for chemical fertilisers,crops grown with them usually grow too fast to be rich in nutrition.They may look beautiful on the outside,but inside there is usually more water than essential minerals,and they often have less flavour as well.Complete the sentences in the tables.Para.Main IdeaDetail 1

8、-2 Pesticides can kill helpful _Some pesticides have been _ because of the _Crops grown with chemical fertilisers usually _ to be full of _.bacteria and insects prohibiteddamage grow too fast nutritionDHaha,weve turned to organic farming.As an alternative,some farmers have switched to organic farmin

9、g,and many customers have turned to organic food when they shop at the local grocery.Organic farming is simply farming without using any chemicals.Organic farmers focus on keeping their soil rich and free of disease through natural means.For example,many organic farmers use natural waste from animal

10、s as fertiliser.This makes the soil in their fields richer in minerals.It also keeps the air,soil,water,and crops free of chemicals.Para.Main IdeaDetail 3Many organic farmers use _ as fertiliser.natural wasteA 2.What are the advantages of organic farming?.Organic farmers also use many other methods

11、to produce rich soil.They often change the kind of crop grown in each field every year.For instance,they may grow corn or wheat in a field one year,and then grow beans there the next.Why different crops are grown is because they put important minerals back into the ground,making it ready again for t

12、he next batch of crops.Organic farmers also plant diverse crops that use different depths of soil to help keep it rich.For example,peanuts grow on the grounds surface,but many other vegetables put down deep roots.The goal of using different organic farming methods is to grow good food while avoiding

13、 damage to the environment or to peoples health.The methods to keep the soil fertile using natural waste from animals as fertilizer.changing the kind of crop in each field.planting crops to use different levels of soil.planting grass between crops to prevent The same goal:_ to grow good food and avo

14、id damaging the environment or peoples health.Paragraph 41234Para.Main IdeaDetail 4 They often _ grown in each field _.They also plant crops that use _ of the soil to help keep it rich.change crop every year different depths CSome people would prefer to stop the use of man-made chemicals in agricult

15、ure entirely.What keeps them from doing so is the fact that chemical farming serves the high demand for food around the world.Organic farming 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 kee

16、ping people and the environment as healthy as possible.5.Why do organic 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.Main IdeaDetail 5 Organic farming is

17、 nowhere near able to meet the high _.demand for food Bchemical farming Thinkingorganicfarming advantagesdisadvantages fight crop diseasefight crop disease increase productionincrease production lower costlower cost crops look beautiful crops look beautiful outsideoutside.good food good food avoidin

18、g 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 health harm the environmentharm the environment crops are less in crops are less in nutritionnutrition.cannot meet the demand for cannot

19、 meet the demand for foodfood more efforts and higher more efforts and higher costcost smelly gasessmelly gases.English Learningexpress 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 of view,From my point of vie

20、w,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,In recent days,scientists have discovered that using_ fertilizers for a long time can _ the land and also peoples

21、health.There are several _ caused by chemical fertilizers.They damage the land,stay in the water for a long time which can _ in peoples bodies and _ many illnesses.chemicalproblemscause damage to build upFill in the blanks according to the passage.lead to_ farming is becoming more popular with some

22、farmers.Organic farming does not use any chemicals and _ keeping the soil rich.This also _ the air and crops _ chemicals.There are many organic farming_ for making the land healthy and productive.All of these methods try to produce good food and to keep the environment and peoples health.keepmethods

23、focus onOrganicfree fromchemical farming organic farmingRead for writing 2(discourse 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 c

24、rop disease and increase production.Over time,_,what some scientists have found is 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

25、water sources for a long time.This affects the crops grown on the land and,in turn,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 thes

26、e chemicals may make them ill and even cause cancer._,some pesticides like DDT have 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 t

27、he outside,_ inside there is usually more water than essential minerals,_ they often 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

28、 factAs forbutandas wellAs an alternativeRead for writing 2(discourse markers)CHEMICAL 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 fie

29、lds richer in minerals.It _ keeps the air,soil,water,and crops free of chemicals.Organic 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._ _ th

30、ey put important minerals back into the ground,making it ready for the next batch of 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

31、 to help keep it rich._,peanuts grow on the grounds surface,_ many other vegetables 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 chemical

32、s in agriculture entirely.What keeps them from doing so is the fact that chemical farming 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 whil

33、e keeping people and the environment as healthy as possible.For examplealsobutTherefore 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,mor

34、eover,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 new topicWriting 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”等问题等问题作了一些报道，引作了一些报道，引发了许多讨论，发了许多讨论，到底哪

35、种农业种植方式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有利于农业可持续发展并解决食品安全问题呢？问题呢？如某英语报记者对你进行采访，如某英语报记者对你进行采访，征求对此现象的看法，请用英语征求对此现象的看法，请用英语写一篇写一篇议论文，表达自己的观点，并说明理由议论文，表达自己的观点，并说明理由。BrainstormIn my opinion/in my view/in my eyes/as far as I am concerned,organic farming is preferable to chemical farming,because its beneficial

36、to both peoples health and the environment,and favorable to sustainable development of agriculture.In my opinion,I agree/am for/be in favor of chemical farming,because it can fight crop decease and increase production,thus serving the high demand for the food around the world.Whats your argument?Wha

37、ts your argument?Brainstorm organization 1Part 1Part 2Part 3chemical farming Thinkingorganicfarming advantagesdisadvantages fight crop diseasefight crop disease increase productionincrease production lower costlower cost crops look beautiful crops look beautiful outsideoutside.good food good food av

38、oiding 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 health harm the environmentharm the environment crops are less in crops are less in nutritionnutrition.cannot meet the demand for c

39、annot meet the demand for foodfood more efforts and higher more efforts and higher costcost smelly gasessmelly gases.Recently,we have had a heated discussion aboutRecently,we have had a heated discussion about_._.Different people,however,Different people,however,have different opinions on this have

40、different opinions on this mattermatter.SomeSome peoplepeople areare inin favour offavour of /agree /agree /supportsupport_.They _.They think it can_.Moreover,it _think it can_.Moreover,it _However,some people are against it.They argue However,some people are against it.They argue that_.Whats more,.

41、that_.Whats more,.as far as I am concerned,Im convinced that_.as far as I am concerned,Im convinced 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2.人工肥料3.在.应用中4.长期使用5.随着时间推移6.有机耕种Para 1 phrases1.dam

42、age 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 soil rich5.free of disease6.through natural means7.keep A free of B1.转向2.转向3.当地的百货店4.保持土壤肥沃5.免受病害6.通过自然方法7.使A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2.种豆3.下一批谷物4.种植多样化的作物5.土地表面6.避免.的伤害Para 4 phrases