人教版必修4英语Unit2_Listening_and_speaking_名师教学设计

Unit2 Listening and speaking名师教学设计第四课时Listening and speaking (Using language)1. Teaching Analysis 教情分析1.1 Teaching objectives-教学目标1.1.1 Language target语言目标1.1.1.1 Key words & expressions重点词汇和短语1.1.1.1.1 For applying: chemical, organic, production, discovery, focus, reduce, comment,1.1.1.1.2 For comprehending：grain, confuse, bacteria, pest, soil, nutrition, mineral, root, skim, underline summary,1.1.1.1.3 For recognizing: fertile, fertilizer, soybean, root, producer, industrial1.1.1.2 Useful expressions:1.1.1.2.1 For applying: build up, lead to, focus on, turn to，keep…free from/of1.1.1.2.2 For comprehending：long term use of, in addition, as well as, , keep in mind1.1.1.3 Sentence structures:1.1.1.3.1 For applying:①With these discoveries, some farmer and many customers are beginning to turn to organic farming.P13②They focus on keeping their soil rich and free of disease. P133.1.1.3.2 For comprehending：①Over the past half century, using chemical fertilizer has become very common in farming.P13..②Recently, however, scientists have been finding that long-term use of these. fertilizers can cause damage to the land and, even more dangerous, to people's health. P13③What are some of the problems caused by chemical fertilizers? P13④First, they damage the land by killing the helpful bacteria and peseta as well as the harmful ones. P13⑤Organic farming is simply farming without using any chemicals. P13⑥To grow good food and avoid damaging the environment or people' health...1.1.1.4 Function :Social communication(社会交往)——Advice/ persuasion①I’d rather …②If I have a choice I’ll choose…③It’s better ….④What is the advantage of`…?⑤You need to…⑥The advantages are…⑦I’d prefer…because…⑧This is good value because…⑨I don’t like…because…⑩It’s a great pity that…⑾You’ll taste the difference when…1.1.2 Ability goals能力目标1.1.2.1 Enable Ss to master the main idea of the reading passage.1.1.2.2 Enable Ss to listen and get the main idea of the listening text.1.1.2.2 Enable Ss to use some listening strategies.1.1.2.3.Enable Ss to talk about the advantages of organic food and use the expression of persuasion.1.1.3 Emotion goals情感目标1.1.3.1 Enable Ss to know about the difference between chemical farming and organic farming, the advantages of organic farming and make correct choices while buying food.1.1.3.2 Enable Ss to advise people to do buy organic food..1.2 Important & difficult teaching points-教学重难点1.2.1 Important teaching points-教学重点1.2.1.1 Make Ss master the main idea of the text1.2.1.2 Enable Ss to use some listening strategies to get the main idea and some specific information of the listening text1.2.2 Difficult teaching points-教学难点1.2.2.1 How to use what they have read and listened to persuade people to buy organic food.2. Student analysis学情分析2.1 Fundamental state基本情况通过前几节课的学习，学生知道了农业先驱袁隆平的研究和贡献，很多人吃饭的问题解决了。

但是，由于经济和科技的发展与人口的进一步增加，使得化肥在农业中非常普遍的使用。

这又产生了一个新的问题——化学农耕好还是有机农耕好？他们的区别是什么？化学农耕的害处和有机农耕的好处是什么？如何让人们在吃饱的基础之上吃得健康，这也是当今人们最关注的问题。

但是有机农耕生产出的绿色食品怎样才能为人们所接受和购买？这是学生通过阅读、听力和口语学习和练习将要获取的知识和解决的问题。

学生对这些问题也会感兴趣。

2.3 Class data本班实际由于本班的理科班，学生的课后作业负担较重，参加生活实践的机会不多。

相对于文科生来说，理科学生课后复习、预习和练习英语的时间较少，所以课后任务相对也较少，主要在课堂上完成复习巩固和练习。

3. Teaching methods教法建议Question and answer method问答法，task-based teaching method任务型教学法，communicative approach交际法，situational teaching approach情景教学法4. Teaching Aids教学辅助Blackboard and chalk, computer, projector5.Teaching procedures-教学进程5.1 Step I Lead- in & Warming up5.1.1 Ask Ss talk about people’s major concern about safetyT: Today, we will learn something about organic farming and chemical farming. Before that , I have a question for you: What is our major concern nowadays?Ss: …T: You see, as our living condition improves, we are more and more concerned about what we eat. In fact more and more people become worried about the quality of the food they eat.T: Why so?Ss: …T: Yes, because more and more farmers use chemical fertilizer instead of natural waste from animals. And they use poison to kill insects to protect their plants. So people now all want to eat green food which does no harm to their health. And we call the way of farming that farmer use to produce green food organic farming.5.2 Step II Reading5.2.1 Skimming: Ask students to read through the using language reading passage T: Now read through the reading passage and find the main idea of the passage. Ss; …Suggested answer:Chemical fertilizers can cause many problems, so organic farming is becoming more popular.5.2.2 Scanning :Ask students to reading the passage again to find the answers to the following questions:T: Good. Now please read the passage again and find the answers to the questions:1. What is the organic farming?2. What is the advantage of using natural fertilizer?3. What is the disadvantage of using chemical fertilizers?4. What’s the main idea of paragraph 3?5. What is the main reason for using organic faming method ?Ss: …Suggested answer:anic farming refers to crops growing with natural rather than chemicalfertilizers.2. Make the soil richer in minerals and so more fertile, reduce diseases in crops and help them grow strong and healthy. Besides, keep the air, soil and water as well as the food supply free from chemical.3. There are three disadvantages. Firstly, leaving chemicals in the ground for a long time is not good for the soil or the water supply. Secondly, farmers often grow the same crop year after year. As a result, the soil gets exhausted. Thirdly, chemical fertilizers kill both helpful and harmful bacteria and pests.4. Organic farming is becoming more popular with some farmers and many customers after these discoveries came out.5. To grow good food and avoid damaging the environment or people’s health.5.2.3. Post-reading Summary of the passageT: After reading a passage, it’s important for us to summarize it. How should we write a summary?Ss:…T: Now please write a summary of this passage , try following the procedures:Step 1. Skim the passage to find its main idea. Write it down if your own words Step 2.Find and underline the topic sentence of each paragraph. Rewrite each topic sentence, using your own words.Step 3. Write your summary. First state the main idea of the passage and them the topic sentence covered by each paragraph.Ss: …Step 4. Swap summaries with your partner and give each other comments..5.3 Step III Important words and sentences5.3.1.Guide Ss to deal with the language pointsT: Now please find and underline the important words, phrases and sentences. You may ask each for help if you have any problems.Ss: …T: Ok, now look at the screen and make sure you understand them all.1. Words : chemical, organic, production, discovery, focus, reduce, comment2 .Useful expressions: build up, lead to, focus on, keep…free from/of, in addition, as well as, turn to3. Sentence structures:1. Over the past half century, using chemical fertilizer has become very common in farming. P132.With these discoveries, some farmer and many customers are beginning to turn to organic farming.P133. They focus on keeping their soil rich and free of disease. P13(Teachers may help Ss with some other key points)5.4 Step IV Listening5.4.1 Guide Ss to listen to the tape for the first time and try to get the main idea.T: We are going to listen to a conversation based on what has just been learnt about organic farming. While listening, try to grasp the key words and get the main idea.Suggested answer:The possible bad effects of chemical fertilizers on the fruit and vegetables that we eat today.5.4.2 Listening for specific information -信息捕捉5.4.2.1 Ask Ss to do listeningT: Listen to the tape for the second time and finish Ex1. As you listen t the dialogue, keep in mind what you have just read about chemical fertilizers. What is the main topic of the conversation? Ready, let’s go.Ss: …Suggested answer:The possible bad effects of chemical fertilizers on the fruit and vegetables that we eat today.5.4.2.2 Ask Ss to listen again to get complete comprehension.T: Read Ex 3 first, and then I will play the tape once more. After listening, decide whether the sentences are true or false.Ss: …Suggested answer:TFTFT5. 5 Step V. Speaking---Practise persuasion5.5.1 Ask Ss to read the passage on P15 aloud, paying attention to the pauseswhen reading long sentencesT: Now, in groups read the short passage and pay attention to pronunciation and intonation,Ss: …T: Summarize the main idea of it.Ss: …Suggested answer:Organic farming• No use of chemical fertilizers• Away from industrial areas• Away from dirty water supply• No air pol lution5.5.2 Guide Ss to make a conversation ,talking about the Green food.T: Why should people buy organic food?Ss: …T: Now, have a conversation in pairs, one of you is the farmer, while the other is the customer. The farmer is persuading the c ustomer to buy your “green food”(Teachers may introduce the useful expressions on the screen. You may also walk around to give help to the Ss in need. Four minutes later, ask several pairs of students to present their dialogue.)5.5.3 Present the conversation in pairs.T: It is show time. Which group would like to come to the front of the class and act it out?Group 1: …Group 2: …Group 3: …(Depending on the time, the teacher may ask two – four groups to show it and ask other Ss to make comments on it.)Sample dialogue:F=farmer C=customerF: Good morning! Would you like some organic carrots this morning?C: Hmm…They’re a little expensive! What is the advantage of…?,F: The advantage of these vegetables is that they are green food so they’re saf e to eat and good for your family.C: But what’s the advantage of having green food? I know all vegetables are good for you and those down the road look green too. And I can buy them at half the price there.F: Well, let me explain, I’d rather feed my fami ly on green food than othervegetables because they are grown without chemical fertilizers.C: But the price is too high. I’d prefer to buy good food if I can afford it.F: This if good value for money because you’ll have healthier children. They won’ t ha ve to go to the doctor so often and you won’t have to take time off work. In the long run you’ll be benefit.C: Certainly Id like to buy what is safe and healthy. Perhaps I’ll try some of your vegetables and if they are as good as you say, I’ll be back ne xt week!5. Step V Talking and sharing -讨论与分享（含自我总结与评价）5. 1 Guide Ss to do self-evaluation:What have I learnt in this period?What am I still confused about?What should do to make them clear?6. Homework课后作业1. Finish Guidance on learning2. Wri te a poster about “green food”.。