Unit 2 Topic 3 Section B 教案.doc

Unit 2 Saving the EarthTopic 3 Section B教案Teaching aims and demands 1. Learn some new words and useful expressions: ought to, turn off, action, on time.2. Go on learning to protect the environment. 3. Review giving advice. Teaching aids录音机/小黑板/一只塑料瓶/罐头瓶/别的实物Teaching Plan Step 1 Review 分小组向全班同学汇报上节课的作业。教师准备一些垃圾并做些动作，学生判断正误，并纠正老师的行为，既激发兴趣又复习上节课内容。进行环保教育。T:(教师出示一塑料瓶) Look at this plastic bottle, its empty. Lets throw it away.(扔在地上)Ss:Mr./Miss, you are wrong. T:Why?Ss:Because it can be reused. T:(教师出示一罐头瓶。) Here is a can. Its not useful. S1, please throw it out of the window. S1:Sorry. Mr./Miss, I cant do that. We must protect our environment and it can be collected and recycled. T:What a greener person! We all should protect the environment around us. We need to reduce the waste we produce. We should use both sides of paper, and reuse plastic bags rather than throw them away, but actions speak louder than words. S2, could you pick up the plastic bottle on the floor for me?S2: Certainly. (学生拾起。)T: Thank you. S2, you are a good student. Everybody should do it like this every day, but easier said than done. Step 2 Presentation 1. (1)教师将已设计好的听力问题呈现在黑板上。(1) Would Michael like to be a greener person?(2) When you go shopping, do you take a cloth bag or plastic bags?(2)让学生听录音1a，并回答问题。(3)让学生再听录音，并说出简的建议。T: Listen to the tape again, and tell Janes advice.First, you ought to turn off the lights Second, youd better walk or ride a bike instead of Third, take a cloth bag when (要求学生跟读这些句子，并用ought to和Youd better来提一些环保建议。)S1: You ought to clean the classroom. S2: Youd better not cut down the trees. S3: 2.让两位同学读1a，别的同学认真听，并找出重难点和同桌讨论，教师深入学生中，了解共性问题并讲解，可简单复习不定式。T: Now, Ill let two students read 1a for us. The others listen carefully, and find out the difficulties you dont understand. Pay attention to the stress and intonation. Step 3 Consolidation1. (1)学生根据板书的重点，改写对话成一篇报告。T: According to the main sentences. Please change the dialog into a short report. You have two minutes. (2) 要求学生复述对话。S1: Michael would like to be a greener person. Jane gives him three pieces of advice. She tells him that he ought to turn off the lights when he leaves a room. when he wants to travel a short distance, hed better walk or ride a bike, not take a bus or a taxi2. (1)让学生独立完成1b，教师检查并以提问的方式核对答案。T: Please match the letters with the sentences. One minute later, Ill ask a student to give his/her answers, then check our answers together. (2)让学生读1b中的句子，熟悉内容，为下步做准备。(3)让学生来看这些图片，加强环保节能方面的教育。T: Boys and girls, please look at the pictures about the daily life. What do they show us? Who can tell us? Hands up!S2:Picture a shows us that we ought to save electricity. S3:Picture b shows us that S4:Picture c shows us that S5: (4)要求学生进行拓展，总结更多的日常环保行为。T: Very good! Pay attention to our lives around us every day. There are many good habits to save energy or protect the environment. Who can try to tell us?S6:Take care of the wild animals. S7:Dont cut down the trees. S8: (5)根据1a，应用1b中的内容再来重新组织一个对话。T: Make a new dialog like 1a according to the sentences in 1b, practise it with your partner. Later the volunteers act it out. Example:S9: Hi, S10. Would you like to be a greener person?S10: Of course, Id love to, but what should I do?S9: First, Reduce waste. Dont buy bottles or boxes which people can use only once. S10: Oh, thats easy. Whats next?S9: Second, recycle boxes and plastic bottles.S10:Thats right. S9: Step 4 Project 1.和同桌讨论可以减少使用、再使用或回收再利用的各种东西，以此来完成2b。同时尽可能多地呈现一些可三Rs的日用物品，观点可能会出现分歧。T: Now, please work in pairs and try to complete 2b. 2.教师再呈现一些实物，让学生判断。T: Lo