1、,Unit 2 Working the land Using language,safe food,green food, organic food,safe or not ?,growing crops with natural fertilizers rather than chemical fertilizers,Skimming: What is ?,organic farming,Scanning（group work）:,Why are natural fertilizers better? What problems are caused by using chemical fe

2、rtilizers? 3. What special ways of farming do organic farmers use? 4. Why do the farmers do so?,Why are natural fertilizers better? 2. What problems are caused by using chemical fertilizers?,Scanning（group work）:,Use natural fertilizers. To make the soil richer. Change crops every 2 To prevent the s

3、oil from or 3 years. getting exhausted. Grow crops that need To prevent wind or water different levels of the from carrying away the soil in between. soil.,3. What special ways of farming do organic farmers use?,There is a big piece of field near your school. The school is planning to grow some gree

4、n food in the field. Make a plan with your group members:,What green food to grow and why? How to develop the soil? What special ways to grow it? What special ways to take care of your crop?,Suppose:,Make a poster（海報）:,tell people what you are selling make people believe your food is good enough per

5、suade people to buy your food make your poster as attractive as possible,Homework:,1. Design your posters and make them more attractive. 2. Sum up what you have learned in this unit, including useful words, expressions and new grammar item.,Organic farming,A summary (概括) of organic farming:,no use o

6、f chemical fertilizers away from industrial areas away from dirty water supply no air pollution some special ways of farming to use the food should be healthy and safe,吃動物怕激素；吃植物怕毒素； 喝飲料怕色素；能吃什么，心里沒數(shù)。 全國人大代表金志國 帶到兩會上的順口溜,A quiz:,Organic food just refers to vegetables and fruits. Green food has a color of green. Green food is certain to be healthy and safe. Organic food is free of chemical fertilizers. Orga