新课标人教版英语选择性必修一Unit5 Using Language 导学案及答案

Unit 5 Working the Land---Using Language

CHEMICAL VERSUS ORGANIC FARMING

【核心素养】

1. To enhance the reading and writing skills;

2. To learn about the chemical and organic farming;

3. To share your own opinions on the chemical and organic farming;

【情境导入】

1. Share some pictures of chemical farming and organic farming.

【阅读深思】

Read the text and answer the following questions:

(1) Why did many farmers welcome the introduction of chemical farming?

______________________________________________________________________________ (2) What concerns many people about the use of pesticides?

______________________________________________________________________________ (3) What is one problem with the use of chemical fertilisers?

(4) How is organic farming different from chemical farming?

(5) Why do organic farmers change the kind of crop grown in a field every year?

【自学反馈】

Activity 1: True or false

1. Chemicals can cause damage to the land and people’s health. ( )

2. Organic farmers are those who grow crops with chemical fertiliser ( )

3. Beams should be grown together with corn and wheat. ( )

4. Vegetables that put down deep roots are harmful to the soil. ( )

5. Farmers grow the same crops year after so that the soil may not get exhausted. ( )

6. Actually it is not easy to completely realise organic farming. ( )

Activity 2: Match the main ideas with each paragraph.

Para.1-2 A. What organic farming is

Para.3 B. Why man-made chemicals are still used in farming

Para.4 C. Organic methods for producing rich soil

Para.5 D. The problems with chemical farming

【自主探究】

Discuss these questions in groups

1. Is the author of the passage for or against organic farming? How do you know?

2. What other disadvantages of chemical farming did the author not list?

3. How might the following items be problems and how important are they for organic farming?

natural animal waste used as fertiliser

higher cost of producing food

greater effort required to farm

【成果展示】

Please show your answers based on the above discussion.

【点评精讲】

1. Language features of the passage;

2. Lead the students to share their opinions on chemical and organic farming.

3. Complicated sentence analysis

【随堂检测】

Decide whether your group supports chemical farming or organic farming, then complete the outline below:

Topic sentence: In my opinion, farming is preferable to farming because Point 1:

Point 2:

Point 3:

Conclusion:

【巩固应用】

Exercise 1 and exercise 2 of P.58

参考答案

Unit 5 Working the Land---Using Language

CHEMICAL VERSUS ORGANIC FARMING

【阅读深思】

Read the text and answer the following questions:

(1) Why did many farmers welcome the introduction of chemical farming?

Because chemical pesticides and artificial fertilisers can fight crop disease and increase production (2) What concerns many people about the use of pesticides?

It may make them ill and even cause cancer.

(3) What is one problem with the use of chemical fertilisers?

Crops grown with them usually grow too fast to be rich in nutrition. They may look beautiful on the outside, but inside there is usually more water than essential minerals, and they often have less flavor as well.

(4) How is organic farming different from chemical farming?

It doesn’t use any chemicals. Organic farmers focus on keeping their soil rich and free of disease through natural means.

(5) Why do organic farmers change the kind of crop grown in a field every year?

Because different crops put important minerals back into the ground, making it ready for the next batch of crops.

【自学反馈】

Activity 1: True or false

1. Chemicals can cause damage to the land and people’s health. ( T )

2. Organic farmers are those who grow crops with chemical fertiliser ( F )

3. Beams should be grown together with corn and wheat. (F)

4. Vegetables that put down deep roots are harmful to the soil. (F)

5. Farmers grow the same crops year after so that the soil may not get exhausted. (F)

6. Actually it is not easy to completely realise organic farming. (F)

Activity 2: Match the main ideas with each paragraph.

Para.1-2 A. What organic farming is

Para.3 B. Why man-made chemicals are still used in farming Para.4 C. Organic methods for producing rich soil

Para.5 D. The problems with chemical farming