Unit5WorkingthelandUsinglanguage课件31张 2021-2022学年人教版(2019)高中英语选择性必修第一册.pptx

1、 Using Language 耕耘土地Using LanguageEvaluate chemical farming and organic frming CHEMICAL VERSUS ORGANIC FARMING 化学耕作和有机耕作versus prep (缩写缩写vs., v.) （比赛或诉讼中）对、诉，（比赛或诉讼中）对、诉， 对抗；对抗； 与与.相对、相比相对、相比1. What do farmers do in order to make crops grow better?lTo add natural or chemical/artificial fertilizers t

2、o the soil/land.lTo use pesticides to kill pests.lTo irriage the fieldslTo remove the weedsl.Pre-readingchemical / artificial fertilizers natural fertilizersTo protect the crops, farmers have to kill off the harmful pests using chemicals/pesticides.2. What is organic farming?Organic farming is simpl

3、y farming without using any chemicals.3.What is chemical farming? Chemical farming is farming using chemical pesticides and artificial fertilisers. Organic farming is simply farming without using any chemicals.1 Read the text and answer the questins on page 56. 1. Why did many farmers welcome the in

4、troduction of chemical 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.Scanning3. What is one problem with the use of ch

5、emical fertilisers? Crops grown with them usually grow too fast to be rich in nutrition.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 mean

6、s.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 next batch of crops.6. What is the goal of using organic farming methods? Do you think it can be reached? Why or wh

7、y not? The goal of using organic farming methods is to grow good food while avoiding damage to the environment or to peoples health. Yes, I think this goal can be reached, because the development of new agricultural technology will improve organic farming methods greatly.2. Match the main ideas (A-D

8、) 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. 5DACBDetailed readingare still in useComplete the sentences in the tables.Para.Main Idea

9、Detail 1-2 Pesticides can kill helpful _ _.Some pesticides have been _ because of the _.Crops grown with chemical fertilisers usually _ to be full of _.bacteria prohibiteddamage they causegrow too fast nutritionDand insectsPara.Main IdeaDetail 3Many organic farmers use _ _ as fertiliser.4 They often

10、 _ grown in each field _.They also plant crops that use _ of the soil to help keep it rich.5 Organic farming is nowhere near able to meet the high _.from animals change the kind of crop every year different depths demand for food around the world natural wasteACB= far from/not at all1 Read the passa

11、ge again and answer the following questions.1. Whats the main idea of the passage?The advantages and disadvantages of chemical and organic farming.2. What type of writing of the passage?It is an argumentative essay.Skimming3. Whatd the authors attitude towards organic farming? How do you know?From t

12、he last paragraph I know that the author is for/in favour of organic farming.4. How the passage is developed? By means of examples, illustration and contrast 2 The author uses “Benefits Problems Solutions” to introduce chemical farming and organic farming. Finish the table according to the passage.

13、Farming Benefit Problem Solution Chemical farming lfight crop disease and increase productionlserve the high demand for foodllook beautiful on the outsidellower cost of productionlharm/damage the land, animal, peoples health and the environmentlcause crops to lack nutrition/ nessential minerals or h

14、ave less favourswitch to organic farmingFarming Benefit Problem Solution Organic farmingluse natural animal waste as fertiliser and turn waste into wealthlmake the soil rich; lkeep the air, soil, water and crops free of chemicalslnowwhere near able to meet the need for foodlhigher cost of producing

15、foodlgreater effort required for farmingstill a long way to find a suitable solution3 Get to know the structure of the text (an argumentative essay).benefits(advantages)problems(disadvanges)Chemical farming VSorganic farmingbenefits(advantages)problems(disadvanges)Para. 1Para. 1Para. 2Para. 2Para. 3

16、 & 4Para. 3 & 4Para. 2Para. 2总分总4. The author uses some transitions (过度和转换过度和转换) between ideas. Find some in Para.2 and name their functions.Transition wordsFunction For example/instanceIllustrating, but alsoAdding more information and emphasisingIn addition,Adding more informationIn turn,Se

17、quencingIn fact,Illustrating / EmphasisingAs for, as an alternative Introducing a new topic / thinghowever, butContrastingand as well, alsoAdding more informationbecause, thereforeIntroducing cause, conclusionWriting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

18、、论据、 论证。 Write an argumentative essay giving your opinion on chemical or organic farming.书面表达书面表达 假定你是李华，最近，你班开展了主题为假定你是李华，最近，你班开展了主题为“Chemical Farming or Organic Farming”的征文的征文活动。请根据以下内容用英语写一篇短文。活动。请根据以下内容用英语写一篇短文。1. 你的观点；你的观点；2. 做出该选择的理由。做出该选择的理由。步骤1精准审题题材：_人称：_时态：_步骤2构建框架第一部分_第二部分_第三部分_农业 第一人称、第三

19、人称 一般现在时 表明观点 表明自己选择的理由 再次肯定自己的观点，与首段相呼应 四步成文Structure 1 Topic sentence: In my opinion, _farming is preferable to _farming because _ Point 1_(Detail) _ Point 2_ (Detail) _ Point 3_ (Detail) _Conclusion:_Structure 2Topic sentence: In my opinion, _farming is preferable to _farming because _ One the on

20、e hand, _ . Besides, _. In addition, _ However, on the other hand, _.Whats more, _.Also, _ In conclusion, _. express your opinions:In my eyes In my opinion . Im opposed to Id prefer because Id rather.I think/believe/guess that. From my point of view,What I firmly believe in is thatMy view/opinion/be

21、lief is that.My impression is that.I have a feeling that.Im fully convinced that.make a conclusion:In summary/conclusionIn a word,All in all,To sum up,Therefore. In my opinion, organic farming is preferable to chemical farming because of its many obvious advantages.One the one hand, organic farmers

22、try to avoid using chemical pesticides and fertilizers to help crops grow. As a result, there are no harmful chemicals left in the food or the environment. In addition, organic farmers focus on keeping their soil rich and free of disease through natural means. For example, they use natural waste fro

23、m animals to keep their soil rich and the air, soil, water, and crops free of chemicals. Moreover, organic food is not only safe and healthy but also more nutritious and tastes better because of the rich and natural vitamins and minerals. On the other hand, chemical farming harms/ damage the land, p

24、eoples health and the environment. For example, chemicals stay and build up in the ground, underground water and food supply, thus affecting crops, animals, and humans and leading to cancer or other illnesses. Besides, crops grown with chemical fertilizers usually grow too fast to be rich in nutruti

25、on and have less flavour as well. All in all, I m in favour of organic farming. I advocate more people choose to consume organic foods, despite their higher prices. I hope more farmers will turn to organic farming to meet the growing need.Write an argumentative essay giving your opinion on chemical or organic farming.