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

1、 VersusLearning Objectives1.Integrate and describe the differences between chemical and organic farming and their respective advantages and disadvantages.2.Analyze and judge the authors writing techniques,learn to master the main discourse features of argumentation.3.Express their views on chemical

2、farming or organic farming in written form in appropriate language.请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内容请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内

3、容Organic grapesOrganic grapesC Chemical hemical grapesgrapesWhich kind of fruit do you want to choose to eat?请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内容请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替

4、换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内容What kind of What kind of fertilizerfertilizers s do farmers use?do farmers use?Chemical fertilizersNatural waste from animalsPrediction-what is the main idea of the passageIt mainly talks about the chemical farming and organic farming请替换文字内容，添加相关标题，修改文字内容，

5、也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内容请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。请替换文字内容，添加相关标题，修改文字内容，也可以直接复制你的内容到此。点击请替换文字内容 Chemical farmingChemical farming farming using farming using chemical chemical pesticid

6、es and artificial pesticides and artificial fertilisers.fertilisers.Organic farming Organic farming simply farming simply farming without using any without using any chemicalschemicals.1.Why did many farmers welcome the introduction of chemical farming?2.What concerns many people about the use of pe

7、sticides?3.What is one problem with the use of chemical fertilisers?4.How is organic farming different from chemical farming?5.Why do organic farmers change the kind of crop grown in a field every year?6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?

8、A.What organic farming is B.Why man-made chemicals are still used in farmingC.Organic methods for producing rich soil D.The problems with chemical farmingParagraphMain IdeaDetail1-2Pesticidescankillhelpful .Somepesticideshavebeen because of the .Cropsgrownwithchemicalfertilisersusually to be full of

9、 .3Manyorganicfarmersuse as fertiliser.ParagraphMain IdeaDetail4 Theyoften grown in each field .Theyalsoplantcropsthatuse of the soil to help keep it rich.5Organicfarmingisnowherenearabletomeetthehigh .Para1Para1 Chemical pesticidespesticides and artificial fertilisers have been in in widespreadwide

10、spread use use in farming since the middle of the 20th century.When they were first introducedintroduced,many farmers welcomed them as a great way to fight crop fight crop disease and increase productiondisease and increase production.Over timeOver time,however,what some scientists have foundwhat so

11、me scientists have found is that their long-term use can sometimes harm both the land and peoples health.pesticide n.杀虫剂 introduce v.推行；实施；采用in widespread use 在广泛使用中over time 随着时间的流逝Para2 For example,pesticides can damage the land by killing not only harmful bacteria and insects,but also helpful one

12、s.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,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

13、 have been prohibited in most countries because of the damage they cause to people and the environment.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

14、,and they often have less flavour as wellbacteria n(单数bacterium）细菌in turn 相应地；转而；依次digest vt vi 消化；vt 领会；领悟as for 至于too.to.太.而不能essential:adj.完全必要的；极其重要的Para3 As an alternative,some farmers have switched to organic farming,and many customers have turned to organic food when they shop at the local gr

15、ocery.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 animals as fertiliser.This makes the soil in their fields richer in minerals.It also

16、keeps the air,soil,water,and crops free of chemicals.alternative n.可供选择的事物可供选择的事物switch to/turn to 转向，转变转向，转变grocery n.食品杂货店（食品杂货店（pl食品杂货）食品杂货）keep.free of/from 使使.免受免受.伤害（或影响等）伤害（或影响等）through natural means 通过天然的方法通过天然的方法Para4 Organic farmers also use many other methods to produce rich soil.They oft

17、en 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 for the next batch of crops.Organic farm

18、ers also plant diverse crops that used 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 damage to the environment or to p

19、eoples health.for instance/for example 例如，比如例如，比如depth n.向下（或向里）的距离；深度向下（或向里）的距离；深度put down roots 生根；定居生根；定居Para5 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 serves the high demand for food aro

20、und 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 keeping people and the environment as healthy as possible.entirely adv.全部地；完整地；完全地全部地；完整地；完全地serve vt 对对.有用，能满足有用，能

21、满足.需要需要serve/meet/satisfy the demand for 满足对满足对.需要需要nowhere near 远没有；远不及远没有；远不及An argumentative essay An argumentative essay is a genre of writing that requires the students to investigate a topic,collect,generate,and evaluate evidence,and establish a position on the topic in a concise manner.Para.1

22、Para.1Para.2Para.2An argumentative essay Your opinionSupporting point2Para.3Para.3Supporting point3Supporting point1IntroductionBodyConclusionSummaryTitleTitleDetailsDetailsDetailsPara.1Currently,there is a widespread concern over the issue thatAs is often the case,As far as I am concerned,however,I

23、t can be said with certainty that.So in my opinion,Nowadays,it has to be noticed that So Im convinced thatyour opinionPara.2First of all,there is no denying/doubt that.On the one hand,On the other hand,Moreover,.For one thing,For another,Lastly,A case in point is.Similarly,we should pay more attenti

24、on to.As has been mentioned above,.supporting points+detailsPersonally,I will conclude by saying.Therefore,I have the reason to believe that.From what has been discussed above,we may safely draw the conclusion thatPara.3SummaryWriting Practice为积极响应学校英语网站健康生活栏目的征文活动，请根据以下要点写一篇议论文投稿，说明有机农耕的好处：1有机农产品更健

25、康，让人放心；2有机农耕对环境不造成破坏；3有机农耕让农民增加收入。注意：1.词数80左右；2.可以适当增加细节，以使行文连贯。Advantages of Organic Farming Compared to chemical farming,organic farming enjoys its overwhelming superiority.The reasons are as follows.Firstly,organic food is healthier and safer as in organic farming,poisonous chemicals like pestici

26、des are forbidden from being used on crops.Furthermore,organic farming is environmentally friendly.For instance,organic farmers use natural waste from animals as fertilizer,which is harmless to the environment.Lastly,farmers can increase their income through organic farming.As people tend to pursue

27、a green life,they are more likely to buy organic fruit and vegetables despite the high prices.With incomparable advantages,therefore,organic farming is expected to benefit more people in the future.Exchange your draft with a partner.Use this checklist to help you review your partners draft.Does the writer do a good job of expressing his/her opinion?Does each paragraph have one main idea?Does each paragraph have at least one detail to support its main idea?Does the writer sequence the points in a logical order?Does the writer do a good job persuading you to accept his/her opinion?