人教新课标高一英语必修4课件：Unit 2 Working the land 2-reading2+3.ppt

1、Using language (I) Have you ever heard about white agriculture, green agriculture or blue agriculture? What do they mean? Features of different methods of farming Green Agriculture _ farming; grow plants in _ Blue Agriculture Farm _or _in natural sources of water such as _ or _. White Agriculture Pl

2、ants are grown in _. The plants are _by a mixture of water and fertilizer. fish water plants traditional soil oceans lakes water nourished What do you know about chemical farming or organic farming? Which kind of farming makes green food? Why? * grown in _ air * free of p_ * _ _ nutrition * do _ to

3、peoples health and the e_ * Food tastes _ clean ollution rich in good nvironment Advantages of organic farming better Read the passage on Page 14 quickly to find out the main idea of each part. Part 1 (Para. 1-2): Part 2 (Para. 3-4): Organic farming and its advantages Problems caused by chemical fer

4、tilizers Reading Read the passage again and answer the following questions. 1. Why are chemical fertilizers so popular in farming today? 2.What problems can be caused by using chemical fertilizers? 3.What is organic farming? 4.What is the main reason for using organic farming methods? 1. Why are che

5、mical fertilizers so popular in farming today? They are a great way to stop crop disease and increase production. 2. What problems can be caused by using chemical fertilizers? They can damage the land by killing helpful bacteria and pests and by staying in the ground and underground water for a long

6、 time. They damage peoples health by building up in their bodies and leading to cancer or other illnesses. 3. What is organic farming? Organic farming means growing crops without using any chemicals. The main reason for using organic farming methods is to grow good food and to avoid damaging the env

7、ironment or peoples health. 4. What is the main reason for using organic farming methods? Find and write down the methods of organic farming and its advantages in the passage. 1.This makes the soil richer in minerals and so more fertile. 2. Farmers often change the kind of crop in each field every f

8、ew years. 2. Changing the crops renews the minerals in the soil and helps it become rich and healthy. Methods of organic farming Advantages of methods 1. Farmers use natural waste from animals. 3. This uses different levels of soil. 4. Farmers sometimes plant grass between crops and leave it in the

9、ground. 4. This prevents wind or water from carrying away soil and acts as a natural fertilizer. Methods of organic farming Advantages of methods 3. Farmers plant crops with different lengths of roots. What are the disadvantages of using chemical fertilizers? 1.Leaving chemicals in the ground for a

10、long time is not good for the soil or the water supply. 2. Farmers often grow the same crop the year after. As a result, the soil gets exhausted. 3. Chemical fertilizers kill both helpful and harmful bacteria and pests. Jia Sixie was an outstanding agronomist grnmst and the author of Chinas first ag

11、ricultural encyclopedia. Reading Task Read the passage quickly and answer the question. Why did Jia Sixie write the book Qi Min Yao Shu? To find out he best ways for farmers to grow crops. Read the text carefully and answer the question. 1.What made Jia Sixie become interested in improving Chinese f

12、arming? 2. How did he think he could help farmers? He saw how some farms produced good crops and healthy animals while others did not. He thought that when he found the best agricultural methods he would write them down so all farmers could read about them and get benefit. Farmers proverbs & sayings

13、 1. No weather is ill, if the wind be still. 早西风夜东风，日日好天空早西风夜东风，日日好天空. 2. Yellow sky at sunset, wind in the morrow. 日晕而风（月晕而雨）日晕而风（月晕而雨）. 3. Rain before seven, clear by eleven. 雨过天晴雨过天晴. 4. April showers bring May flowers. 四月雨带来五月花四月雨带来五月花. Farmers proverbs & sayings 5. Deeds are fruits, words are but leaves. 行动是果实行动是果实,言语只是树叶而已。言语只是树叶而已。 6. The best ground bears weeds as well as flowers. 最好的地里不仅能长出鲜花，也能长出杂草。最好的地里不仅能长出鲜花，也能长出杂草。 意译为意译为 金无足赤，人无完人。金无足赤，人无完人。 7. Never cackle unless you lay. 没下蛋没下蛋,别乱叫别乱叫! 内在含义内在含义:事未成事未成,莫声张莫声张!(事事 未完成莫先夸耀未完成莫先夸耀) 做人要低调做人要低调.