1、Unit 3 Organic food and farmingSection 4What will we learn today?FarmingWhat do famers usually use to make their crops grow well ?化 學(xué) 肥料Chemical fertilizers有機(jī)肥料Organic fertilizersfertilizers Do the fertilizers have an effect on the crops ? Good or bad?Pre-readingDo you know more effects ?Which one i

2、s good ? Which one is bad ?ReadingSkimming Why did the farmers welcome to use chemical fertilizers？ What is organic farming?1.Why did the farmers welcome to use chemical fertilizers？2. What is organic farming?Because chemical can stop crop disease and increase production.Organic farming is simply fa

3、rming without using any chemical.1. What problems can be caused by using chemical fertilizers?2. What are the advantages of the organic farming ? Read the passage and answer the following questions.Detailed Reading1.What problems can be caused by using chemical fertilizers?They can damage the land b

4、y killing helpful bacteria and pets ,and by staying in the ground and underground water for a long time, They damage peoples health by building up in their bodies and leading to cancer or other illnesses.2. What are the advantages of the organic farming ? It keeps the soil richer in minerals and so

5、more fertile. And it also keeps the air , soil water and crops free from chemical. Group-workSpeaking Suppose you are a seller, you want to recommend your organic product to your classmates . Here is an example. For example: Hello, everyone! Im Mr.Liu. Im a green food producer. My vegetables are grown in full sunlight and free of chemical fertilizers and pesticide. They are also safe, delicious and can keep you healthy. Look, they are so fresh and healthy . So please come to try!problems Summarizingorganic farmingadvantages Healthy bodies Organi