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定稿book4unit2usinglanguagereading
Book4 Unit 2 Using Language Now, which one do you prefer? Divide the text into two parts. Part 1 (Para.1-2) Chemical farming part 2 (Para. 3-4) Organic Farming Task1: skim and match the main idea of each paragraph. Task2: Para 1. Read and answer. What advantages does chemical farming have? Chemical farming can stop crop disease and increase production. Task4: Para. 2 Read and fill the form. Task5: Para. 3 True or False Organic farming means farming without using any chemicals. Organic farmers prefer using fertilizers to make the soil richer in minerals. Farmers want to keep their soil fertile and free of disease. Organic farming would pollute the environment. a organic farming method Situation 1: The farmer is using fertilizers to keep the vegetable free from pest. Situation 2: Lao Wang grows soybeans in his field last year and grows corns this year. Situation 3: Lao Li throw the nitrogen fertilizer(氮肥) in his field to make his soil rich in minerals. Situation 4: Li Hua only use natural fertilizers to grow his cabbage. That’s why his cabbage is damaged by pests. Competition The advantages of Organic farming A stubborn farmer’s idea: Chemical Farming is better. Homework: Write a composition about the advantages of organic farming and the disadvantages of chemical farming to persuade the farmer Some useful structures: It is obvious that there are many disadvantages of … there is no doubt that …can lead to… The first reason is that… In addition, it is safe for you to eat … * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. In this unit we have learnt about a great man, do you still remember who he is? What is his achievement? Can you think of other ways to increase our crop harvest? Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. What is the matter we put on the soil
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