Unit5 Working the Land Using Language(情境教学课件）英语人教版2019选择性必修第一册

Using Language （Reading and Writing） Unit 5 Working the Land 人教版2019选择性必修第一册 Evaluate chemical farming or organic farming Learning Objectives In this period, we will understand the differences between chemical and organic farming and their advantages and disadvantages; learn about the author’s writing techniques; learn about the structure of an argumentative essay； write an argumentative essay to express our views on chemical farming or organic farming. 01.Pre-reading Leading in How much do you know about chemical farming and organic farming? pesticides杀虫剂 physical insecticides物理杀虫 Leading in How much do you know about chemical farming and organic farming? chemical fertilisers organic fertilisers/animals’ waste Warming up If you are going to buy some tomatoes, which would you choose? Why? chemical products organic products Warming up Free Talk(Pair Work) If you had a piece of land, which kind of farming would you apply, chemical farming or organic farming? Share your reasons. Reading VS Chemical versus Organic Farming Prediction Predict by analyzing the title and observing the pictures. 1. What is the farmer in the picture doing? 2.What is the farmer wearing? Why? Spraying chemical pesticides on the crops. A mask and a hat. Maybe the chemical pesticides are harmful to health. Prediction Predict by analyzing the title and observing the pictures. What will the passage mainly tell us about? The passage will mainly introduce the , , and of chemical farming and organic farming. characteristics advantages disadvantages Read for the structure Task 1 Match the main idea with each paragraph. Para 1 Para 2 Para 3 Para 4 Para 5 What organic farming is. The problems with chemical farming. Some examples for the disadvantages of chemical farming. Organic methods to produce rich soil. Why man-made chemical fertilisers are still used in farming. Read for the structure Task 2 Divide the text into several parts according to the main idea of each paragraph. Part 1 (para 1-2) Part 2 (para 3-4) Part 3 (para 5) The _______ and _________ of chemical farming. benefits problems What organic farming is and . how it keeps the soil rich The _______and __________of organic farming. problem solution specific general Read for the content Task 1 Read and answer The benefits and problems of chemical farming. Chemical pesticides and artificial fertilisers have been in wide spread 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 crop disease and increase production. Over time, however, what some scientists have 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 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 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, and they often have less flavour as well. Chemical pesticides and artificial fertilisers have been in wide spread 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 crop disease and increase production. Over time, however, what some scientists have 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 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 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, and they often have less flavour as well. 3. What is one problem with the use of chemical fertilisers? 1. Why did many farmers welcome the introduction of chemical farming? 2. What concerns many people about the use of pesticides? As an alternative, 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. 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 keeps the air, soil, water, and crops free of chemicals. Organic farmers also use many other methods 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 the 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 ground’s 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 people’s health. What organic farming is and how it keeps the soil rich 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? 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 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 keeping people and the environment as healthy as possible. The problem and solution of organic farming. 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 people’s health. Yes, I think this goal can be reached. Farmers worked for centuries without using any kinds of chemicals and without harming the environment, and the food they produced was just fine. Read for the content Task 2 Read and fill advantages disadvantages organic farming fight crop disease increase production lower cost crops look beautiful outside ...... healthy food avoid damage to the environment or to people's health ...... harm the land harm people’s 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 Read for the language features There are abundant transitional words used in the text, please circle them and put them into different categories. Function Transitional words contrast illustrate add information cause and effect introduce a new topic however, but for example, for instance, in fact both…and…, not only…but also, in addition, and, also, as well, why… is because…, therefore as for, as an alternative 02.While-writing Write an argumentative essay giving your opinions on chemical or organic farming. Discussion Task 1 Group Work Is the author of the passage for or against organic farming? How do you know? Find out the evidence in the passage. chemical farming high output but harm both the land and people’s health, less flavour, less nutritious Examples Definition organic farming good food avoid damage to the environment or to people’s health Examples Definition Contrast 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. not for or against Discussion Task 2 Brainstorm What other advantages and disadvantages of chemical and organic farming the author did not list? Please add more. advantages disadvantages chemical organic lower costs mature technology ecological balance food safety ecological damage food safety risks high technology demands Discussion Task 3 Thinking Which do you prefer? Share your reasons. Writing 假如你是李华，你班就化学农业和有机农业进行了分组讨论，请写一篇议论文阐述一下你们组的观点。 内容包括： 1. 你们小组推崇的农业耕种方式； 2. 列举至少三个你们小组推崇该农业耕种方式的理由。 注意： 1. 词数120左右； 2. 可适当增加细节，以使行文连贯。 How to write an argumentative essay? Organization Para.1 Para.2 An argumentative essay Your opinion Supporting point2 Para.3 Supporting point3 Supporting point1 Introduction Body Conclusion Summary Title Details Details Details Useful Expressions Para.1 state your opinion Currently, there is a widespread concern over the issue that… As is often the case, … As far as I am concerned, however, … It can be said with certainty that ... So in my opinion, … Nowadays, it has to be noticed that… So I’m convinced that… Useful Expressions Para.2 supporting points and details First 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 attention to... As has been mentioned above, ... Useful Expressions Para.3 give a summary Personally, 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 that… Outline making An argumentative essay Topic sentence: In my opinion, ________ farming is preferable to _______ farming because ____________. Argument 1 (Topic sentence) +detail: Point 1: To begin with, ______________.(Detail)_______. Point 2: What’s more, _______________.(Detail)_______. Point 3: Finally,_______________.(Detail)_______. Conclusion: In closing, I am fully convinced that__________________. ... farming is preferable to... farming because... Point 1+ Detail Point 2+ Detail Point 3+ Detail Conclusion Draft making Use your outline and content learned in the reading part to write a short essay giving your opinion on the topic. Make sure in your writing, you apply subject clauses; clearly and directly present your opinions and reasons; have one main idea in each paragraph; have at least one detail to support each of your point; try your best to persuade the readers to accept your opinion. sequence the points in a logical order; Presentation Exchange your draft with a partner, and evaluate for each other. 评价内容 分数(满分15) Complete Structure (3 parts) Complete structure√&Exact language√&Good Logic ( 9points) High level sentences and good words(+ 2points for each) Spelling/Grammar mistakes and bad handwriting (- 2points) Exact Language Good Logic (linking words) A sample In my opinion, organic farming is preferable to chemical farming because of the benefits to the environment and to people, and because organic food is more nutritious. To begin with, chemical farming harms the environment. Since chemical pesticides are not found in nature, normal natural processes cannot get rid of them. Instead, the chemicals tend to accumulate in the soil and water, and are absorbed in the food chain, where they poison wildlife and domestic animals. In addition, .... Finally, organic food is generally more nutritious than food grown with man- made chemicals. ... In closing, I would like to suggest buying organic food. Yes, the price is a little higher, but the small price we pay extra will bring us huge rewards in the end. 03.Post-writing Summary Evaluate chemical farming or organic farming Write an argumentative essay giving your opinions on chemical or organic farming. chemical farming organic farming Evaluation Genetic marking ladders for topic genre-language, grammar, structure and connect For you to consider Objectives-focus on language and grammar I Peer Teacher Tense I have used tense properly. Sentence structure Each sentence has a complete verb I have checked the sentence structure(S+Vt+O;S+Vi) I have used -ing forms properly. Sentence variety I have used simple and complex sentences. I have used clauses, especially if-clauses. I have used imperatives. Accuracy I have used the key words relevant to the topic. I have used adjectives accurately. Spelling I have checked the spellings of the uncertain words(by using a dictionary or asking partners/teachers) Punctuation I have checked my punctuations carefully. Genetic marking ladders for topic genre-language, grammar, structure and connect For you to consider Objectives-focus on structure and connect I Peer Teacher Opening My opening paragraph has started with an introduction to the topic. Organizing your ideas I have told the name, location and main feature of the theme park in the starting part. The main body has covered the attractions, rides, shows and food of the theme park. I have given recommendation and welcome in the ending part.. My points are logically arranged. Flow I have used connectives between paragraphs and sentences. Overall My layout is neat and clear. Suggestions for next time Assignment 1. Further polish your writing after the evaluation. 2. 假如你是李华，最近你居住在美国的朋友Tom打算来中国定居，但他不知道该在城市还是农村安家，就此向你征求意见。请根据以下提示给他回一封电子邮件。 城市 农村 交通便利，教育条件好 污染少，空气新鲜 … …. … … 注意：1. 词数100左右； 2. 不要逐字翻译，并适当补充内容； 3. 开头和结尾已给出，不计入总词数。 Thank you for Listening $$