Unit5 Working the Land Using Reading for writing （ppt课件）-2024新人教版（2019）《高中英语》选择性必修第一册.pptx

1、Lead-inLead-inWhat organic means?What organic means?No chemical fertilisers or pesticides No genetically modified organismsvs.Which one is better?Which one do you support?化学农业化学农业有机农业有机农业Lead-inLead-inPart 1(para 1&2)The _ and _ of chemical farming.Part 2(para 3&4)What organic farming is and how it

2、keep the _ rich.Part 3(para 5)conclusionbenefitsproblemssoilRead the text and choose its structure.P1A.A.B.B.C.C.Read for structureRead for structureRead for contentRead for contentSignpostsSome words and phrases are used as signposts to help show a paragraphs purpose.These usually come at the begin

3、ning or end of a paragraph.however,for examplein additionin factas foras an alternativefor example for instancefor examplethereforecontrastillustrateadd informationintroduce a new topic标识性语言标识性语言cause and effectbenefits1.fight_2.increase_chemical farmingproblemsPara 1 the benefits and problems of ch

4、emical farmingHow?How?crop diseaseproductionHoweverSome scientists have found _long-term use harm both the land and peoples healthRead for Read for contentcontent Find out the argument in para1论点Complete the sentences in the tables.Para.Main IdeaDetail 1-2 Pesticides can kill helpful _Some pesticide

5、s have been _ because of the _Crops grown with chemical fertilisers usually _ to be full of _.bacteria and insects prohibiteddamage grow too fast nutritionDThe problems with chemical farmingRead for Read for contentcontent P2For examplespraying pesticides on cropsstay in the _and _ for a long timeaf

6、fectsthe _the animals and humans who digest may _and _ bacteria&insectsharmful helpful have a cancerprohibitedIn additionsoil underground water sourcescropsfall illdamagein turnCrops grown with them usually grow too fast to be rich in nutrition.They may look beautiful on the outside,but inside there

7、 is usually more water than essential minerals,and they often have less flavour as well.Part 2(para 3&4)What organic farming is and how it keep the soil rich.supporting detailsBenefit:keep the soil rich.Read for contentRead for contentP4P4Except for kitchen&animal waste,what else can help produce ri

8、ch soil without chemicals?4Main idea:C Organic methods for producing rich soilThey often _grown in each field _.They also plant crops that use _ of the soil to help keep it rich.change the kind of crop every year different depths because they put important minerals because they put important mineral

9、s back into the ground,making it back into the ground,making it ready for the next batch of cropready for the next batch of crops s to grow good food while avoiding damage to the environment or to peoples healthPart 2(para 4)the problem of organic farmingCan you think of the problem of organic farmi

10、ng?Did the author mention it?Problem:cant meet the high demand.Read for contentRead for content远远不可能；远非远远不可能；远非Draw an outline advantagesdisadvantagesorganicfarming fight crop disease increase production lower cost crops look beautiful outside.healthy food avoid damage to the environment or to peopl

11、es health.harm the land harm peoples health harm the environment crops are less in nutrition less flavour.cannot meet the demand for food more efforts and higher cost smelly gases.chemical farming VSRead for contentRead for content关于有机耕作和化学耕作，你们班举行了一场辩论。请你结合你们的讨论结果，写一篇支持有机耕作的英语作文，内容包括：1.化学耕作的危害；2.有机

12、耕作的优点及理由；3.作出总结。注意：1.写作词数应为80左右；2.可以适当增加细节，以使行文连贯。PracticePractice三维设计三维设计p122p122 一、合理布局，精心谋篇Structure The hot issue P1P1P2P2The disadvantage(s)The advantage(s)P3P3 The writers opinion the arguments（论据）&supporting examples（例子）the conlusion（结论）the main idea （论点）正反对比式议论文正反对比式议论文结构结构二、遣词造句，规范得体1.根据提示提

13、出讨论的话题最近我们讨论了要不要发展有机耕作。看法因人而异。Recently organic farming.we held a discussion about whether to developOpinions vary from person to person2.根据下面提示介绍反方观点及理由很明显，使用化肥有很多缺点。It is obvious that using chemical fertilisers .最重要的是，留在作物内部的化学物质会导致癌症或其他疾病。Above all，the chemicals staying inside the crops .这些蔬菜长得很快，

14、几乎没有什么营养。The vegetables .has many disadvantagescan lead to cancer or other illnessesgrow so fast that they contain little nutrition3.根据下面提示介绍正方观点及理由随着人们越来越富裕，他们非常重视健康。As people are becoming richer，.有机农产品只需使用天然肥料，使蔬菜和水果既美味又有营养。Organic produce simply uses natural fertilisers，and nutritive.they attach

15、great importance to healthmaking vegetables and fruit tasty这种产品生长在干净的水中，从不使用农药，这对我们的健康有益。The produce grows in clean water and never uses pesticides，.which is beneficial to our health4.根据提示介绍自己的观点健康是第一财富，所以选择有机食品更明智。Health is the first wealth，so it is wiser to choose organic food.三、恰当衔接，自然过渡使用一句名言，使发

16、表个人观点过渡自然 As the old saying goes，health is the first wealth，so it is wiser to choose organic food.参考范文：Recently we held a discussion about whether to develop organic farming.Opinions vary from person to person.It is obvious that using chemical fertilisers has many disadvantages.Above all，the chemica

17、ls staying inside the crops can lead to cancer or other illnesses.Besides，the vegetables grow so fast that they contain little nutrition.However，as people are becoming richer，they attach great importance to health，and organic produce simply uses natural fertilisers，making vegetables and fruit tasty and nutritive.Moreover，the produce grows in clean water and never uses pesticides，which is beneficial to our health.As the old saying goes，health is the first wealth，so it is wiser to choose organic food.HomeworkHomework