1、M5Unit3 Science versus naturePeriod5 Task Writing a formal letter 一【设计思想】Task目标是写一封有关转基因食品的正式书信。为学生创设一个简单的情景，然后通过听力、阅读小文章增加学生对转基因食品的了解，最后设计一个采访活动，让学生以小组为单位进行。在课堂的最后做一个小结。让学生了解正式信件的内容和写作步骤，逐级加深了解，然后再把所了解到知识在实际中加以运用，按要求完成写作。二【教学目标】1.检查和订正信息2.了解有关克隆食品知识3.掌握信的格式4.写一封与转基因食品有关的正式信件三【教学重难点】1. 进行一个关于转基因食品的讨
2、论2. 设计一个关于转基因食品的采访四【教学环节】【课堂教与学】【Activities in class】Activity 1Skills building 1 changing or correcting a text1. Through a game called “Chinese whisper”, let Ss learn when we are asked to pass information, we need to v 1. correct grammatical errors and spelling mistakesv 2. make changes to the infor
3、mation in the textv 3. change the style or the tone2. listen with the guide abovestep 1 confirming information1. Discuss about what GM food is before listeningWhat does GM food stand for?v Genetically Modified food_skills building 2 conducting a discussion1. How to ask for peoples opinions and intro
4、duce new ideas to the discussionv e.g. What do you think? / Dont you think so? /Do you agree? / Is that your opinion too?v e.g. Another argument is that / Dont forget / On the other hand, /We can also / But what about?Activity 2step 2 collecting more informationSince we have learnt how to ask for op
5、inions of others and introduce new ideas, lets practise the different expressions by interviewing a scientist about GM food.1. List the things about GM food.2. Group work: You will be divided into groups of four and study the interview form on page 54 together. Tell what questions you may ask about
6、each heading and add a sixth heading. Write down your questions and a possible heading in the form. Add more questions to the headings you suggest. Sample answers:A. 1. Safety of GM food Do you think it is safe for people to have GM food?2. Possible side effects Are there any side effects if people
7、have GM food?3. Taste compared with normal food Does it taste the same as/nicer than natural food? 4. Cost Do you agree that GM food is more expensive than natural food?5. Need for government control Do you think the government should do something to ensure its safety? If so, what should be done?6.
8、Popularity for buyers Will you or will you not buy the GM food?Skills building 3:writing a formal letter Often you wonder how to write a formal letter. You will learn that a formal letter often includes information such as an address, a date, the receivers name, job title and address, a formal greet
9、ing, a formal ending and the signature. You will also learn some useful phrases to start and end a formal letter.1. Read the guidelines on page 56. Make sure you know the format of a formal letter and understand the useful phrases to start and end a letter.2. Read the letter on page 56 and label the
10、 parts of the letter.Answers: your address101 High Streetthe date1 May, 2006Mr. Frank Brown receivers name Public Relations Manager job titleSafeway Laboratories receivers address305 Queens Drive LiverpoolDear Mr Brown, formal greeting I am writing to complainpractice immediately.Yours sincerely, fo
11、rmal ending Jim Davidson signature Jim Davidsonyour name3. After you labeled the parts of the letter, read the letter again and underline the phrases used to start and end the letter.I am writing to makeI urge you to seek【课堂巩固】Consolidation Writing a letter about GM foodIn this part, youre required
12、to write a formal letter about GM food to your local supermarket based on the information gathered in Steps 1 and 2.1. You will be divided into small groups and each of you should contribute to the writing of the letter. Read the two articles on GM food in Part A on page 57. Underline all the pros a
13、nd cons and try to understand the meaning of the articles.2. Write a formal letter . The letter should include four points in Part B. Then read your letters to the class.【知识小结】1. 掌握关于转基因食品的相关知识。2. 学会如何写一封正式信件。【提升与拓展】v Please write a formal letter to Mr. Shen Jian, Head of Education Department of Jia
14、ngsu Province, telling him your students opinions on changing English scores into grades in Gaokao. Are you for or against? What are your reasons? Notice the format and structure! Be polite and persuasive!【课后预习】预习课本P58-59的内容，了解相关背景知识。【板书设计】【家庭作业】1. 复习本节课所学内容2. 教师根据教辅资料布置Task 有关知识点练习作业（参见资源包知识点部分学案） 【Feedback】
