高中英语《Unit2 Working the land Using language》导学案新人教版必修4

1、第四册第二单元第四课时 阅读导学案Early sow, early mow. 种得早，收得早。Book 4 Unit 2 Working the land Using languageLearning Goals:1. develop the students skills of summarizing.2. help the students realize the importance of organic farming.Previewing (预习)Fill in the blanks with a proper word from the passage on page 14 .1.

2、Some can cause disease. People usually take some medicine to help them to recover.2.If someone makes a , he or she is the first person to find or become aware of something that no one knew about before.3. Stores of grain are frequently attacked by , especially rats.4. If you are careful in your exam

3、, you can mistakes you will make.5. Plants will grow better in rich and loose .Researching in Class (课堂探究)Step 1 Leading in 1. What is the substance most farmers put on the soil to make crops grow?_ 2. How many kinds of fertilizers do farmers use?_ Step 2 Listening & Reading & Thinking1Skim each par

4、agraph again and find the main ideaParagraph : Long-term use of chemical fertilizers can cause damage to the land and peoples health.Paragraph : Farmers and customers turn to organic farming.Paragraph : Other methods to keep the soil fertile Paragraph : Problems caused by chemical fertilizers. 2What

5、 is “organic farming”? ( no more than 12 words)_ 3Fill the blank: The fertilizer that organic farmers prefer is .4Choose the best answer. （1）Which is not the reason why organic farmers prefer natural waste from animals? A. It can keep the food free from chemicals. B. It can keep the air, soil and wa

6、ter free from chemicals. C. It can kill harmful pests. D. It can make the soil richer in mineral.（2）What is the advantage of using chemical fertilizers? A. Leaving chemicals in the ground for a long time is good for water supply. B. They can get the soil exhausted. C. They can kill helpful bacteria.

7、 D. They can kill harmful pest. 5What does the word“it” (Line 3,Para4 ) probably refer to？（no more than 2 words）_ 6Skim the passage again and find the main idea. can cause many problems, so is becoming more popular. Step 3 Discussing If you want to plant some crops, what kind of fertilizer will you

8、use? Why?(Grown in clean air; free of pollution; rich in nutrition; do good to peoples health and the environment; food tastes better )_ Step 4 Presenting Present the results of the discussion and answers to the questions.Step 5 Teachers evaluationStep 6 Testing1. Fill the blanks with proper words.

9、In recent years, scientists have discovered that using 1 fertilizers for a long time can 2 the land and also peoples health. There are several problems 3 by chemical fertilizers. They hurt the health of the land, 4 in the water for a long time and 5 peoples bodies 6 their food. 7 farming is becoming more popular 8 some farmers and many customers after these discoveries came out. Organic farming does not use any 9 . There are many organic farming methods 10 making the land healthy and productive. All of these methods try to produce good food and to keep the environment and people heal