54 book 4 unit2 working the land using language To help Ss understand the passage Organic FarmingUse the language by reading, listening, speaking and writing 一 体 化 设计：Extensive reading of the unit 教学重点、难点：Some sentence structures of this part. 教学过程：1、组织教学（导言） All of us hope we can live a healthy life . but how can we make it? By doing enough exercises and healthy food can we do it. The text will tell us what is healthy food. 2.新课讲授 Task 1.Read it and answer the following 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 paragraph3?5.why do farmers grow their crops in such ways?Task 2 Structure of the textOrganic Farming I Crops growing with natural fertilizers II Farmers prefer natural waste from animals Natural fertilizer Chemical fertilizer 1 make …richer and 1 leaving …is not good more fertili2 reduce …and help …strong 2 grow …year after year 3 the fertilizers kill …from chemicals III Farmers change crops every twe or three years. … to make sure what is left …Task 3: Exercises on Page 14Because some of the exercises have been involved in Step II, teachers can leave this part to students.Task 4: language points 1. reduce V make sth smaller in size, number, degree, price, etce.g.用心 爱心 专心 115 号编辑This company tries to increase profits by reducing costs.We have reduced expenses this year.2. supply V give sb sth that is needed or usefule.g.He kept me well supplied with cups of coffee while I wrote the report.The shop was unable to supply what she wanted.In Britain milk is supplied to each house in bottles.3. whatever pron any or every(thing)e.g.we will be grateful for whatever amount you cab afford.Whatever I have is yours.4. refer to V mention or speak of sb/ste.g.When I said some people are stupid, I wasn’t referring to you.Don’t refer to this mater again.5. year after yeare.g. The villagers plant trees on the hill year after year4. 课堂练习Ss will translate some difficult sentences and analyze the structure of the sentences.5、布置作业：(1m’)To collect the information about the safety and importance of green food.6、课堂总结：(3m’)From now on we should manage to have organic food , right?板书设计：I Crops growing with natural fertilizers II Farmers prefer natural waste from animals Natural fertilizer Chemical fertilizer用心 爱心 专心 115 号编辑教学反思：用心 爱心 专心 115 号编辑
