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人教2003课标版《Using LanguageⅠ》PPT课件优质课下载
2.learn and talk about the disadvantages of chemical farming and advantages of organic farming.
3.develop a sense of living a healthy life.
4.learn to write a composition by using the structure(结构) of the text.
1. Have you ever been to a farm?
2. Do you know how to work on the farm?
warming up
Let’s go to my farm !
How to increase production
of the crops ?
fertilizers
fertilizer
chemical fertilizer
natural fertilizer
chemical farming
chemical fertilizers natural fertilizers
Better？
organic farming
（化学耕作）
（有机耕作）
Chemical or organic farming?
Reading
___________________ can cause many problems, so
________________ is becoming more and more popular.
Task 1 Skimming
Activity 1: Skim the text and find out the main idea .