最近科学家发现长期使用这些肥料会造成土壤

上传人:小** 文档编号:59280584 上传时间:2018-11-05 格式:PPT 页数:24 大小:1.72MB
返回 下载 相关 举报
最近科学家发现长期使用这些肥料会造成土壤_第1页
第1页 / 共24页
最近科学家发现长期使用这些肥料会造成土壤_第2页
第2页 / 共24页
最近科学家发现长期使用这些肥料会造成土壤_第3页
第3页 / 共24页
最近科学家发现长期使用这些肥料会造成土壤_第4页
第4页 / 共24页
最近科学家发现长期使用这些肥料会造成土壤_第5页
第5页 / 共24页
点击查看更多>>
资源描述

《最近科学家发现长期使用这些肥料会造成土壤》由会员分享,可在线阅读,更多相关《最近科学家发现长期使用这些肥料会造成土壤(24页珍藏版)》请在金锄头文库上搜索。

1、,Unit 2 Working the land,Using language,(Reading , listening & Writing),Module 4,Teaching aims: 1. To get to know something about the organic farming. 2. To train abilities of reading, listening and writing. 3. To learn to use the useful words and expressions and the way of organizing a passage.,fer

2、tilize,Do you know how many kinds of fertilizers farmers use ?,Warming up,natural fertilizer,chemical fertilizer,ORGANIC FARMING Organic farming is simply farming without using any chemicals.,Which kind do farmers use when they are doing organic farming ?,Do you know about organic farming?,Reading T

3、ask I Skimming,Skim the passage and decide whether the questions are true or false.,1. Farmers consider chemical farming as a way to decrease production. 2. Chemicals stay in the ground and underground water for a long time. 3. Organic farming focuses on keeping the soil rich and free of disease. 4.

4、 Different organic farming methods have different goals.,F,T,T,F,Task II Careful Reading,Long-term use of chemical fertilizers can cause damage to the land and peoples health.,P1.,Why are chemical fertilizers so popular in farming today?,They are a great way to stop crop disease and increase product

5、ion.,Whats the main idea of each paragraph?,There are some problems caused by chemical fertilizers.,First, they can by killing helpful bacteria and pests. Chemicals also hurt .,In addition, food with chemical fertilizers usually grow .,P2.,damage the land,crops, animals and,peoples health,too fast t

6、o be full of much,nutrition,P3.,Farmers and customers turn to organic farming.,What is organic farming?,Organic farming means growing crops without using any chemicals.,P4.,What is the main reason for using organic farming methods?,Organic farmers use three methods to keep the soil fertile.,The main

7、 reason for using organic farming methods is to grow good food and to avoid damaging the environment or peoples health.,Long-term use of chemical fertilizers can cause damage to the land and peoples health.,Farmers and customers turn to organic farming.,Organic farmers use three methods to keep the

8、soil fertile.,There are some problems caused by chemical fertilizers.,The main idea of each paragraph.,P1.,P2.,P3.,P4.,Long-term use of chemical fertilizers can cause damage to the land and peoples health, because there are some problems caused by chemical fertilizers. Therefore farmers and customer

9、s turn to organic farming. In addition, organic farmers use many methods to keep the soil fertile to achieve the same goal.,Summary,Enjoy good sentences,Enjoy the sentences in the passage which have the same meaning with the ones below.,1. In recent days, scientists have discovered that using chemic

10、al fertilizers for a long time can hurt the land and also peoples health.,2.Fruit, vegetables and other food grown with chemical fertilizers usually grow so fast that it cant contain much nutrition.,1. But in recent days, scientists have discovered that using chemical fertilizers for a long time can

11、 hurt the land and also peoples health.,然而,最近科学家发现长期使用这些肥料会造成土壤 受损,甚至更危险的是,会对人们的健康造成危害。,Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to peoples health.,Translation: 长时间使用化妆品会对我们的皮肤造成危害。,Long-term use of

12、 makeup can cause damage to our skin.,2. Fruit, vegetables and other food grown with chemical fertilizers usually grow so fast that it cant contain much nutrition.,施过肥的水果、蔬菜和其他食物通常生长的过快而 营养不足。,Fruit, vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much n

13、utrition.,Listening,What are the speakers talking about? How to grow organic vegetables. The possible bad effects of chemical fertilizers on the fruit and vegetables that we eat today. C. If we want to keep healthy, we should avoid using fertilizers.,1. Paul thinks that Carrie is not telling him the

14、 truth. 2. Some chemicals can make the vegetables grow fast but without much nutrition. 3. Paul thinks we should stop using all the chemicals. 4. The vegetables that look healthy are not always healthy.,Listening,T,T,T,F,Listen to the tape and fill in the blanks.,1. The fertilizer makes the vegetabl

15、es grow fast to look big and but theyre empty inside. 2. The chemicals off both the bad and the good things in the . 3. The ground doesnt have enough and any more.,chemical,beautiful,kill,ground,vitamins,minerals,Chemical Farming and Organic Farming,Discussion,In what condition do you think green fo

16、od grow ?,clean, fresh air clean water supplies away from industrial areas free of chemical fertilizers,The advantages of green food,Writing,Write a short passage to introduce “Green Food”,P1. A definition and the advantages of “Green Food” P2. Conditions that green food grows in P3. Conclusion,Finish your short passage. 2. Sum up what you have learnt in this part,

展开阅读全文
相关资源
相关搜索

当前位置:首页 > 商业/管理/HR > 管理学资料

电脑版 |金锄头文库版权所有
经营许可证:蜀ICP备13022795号 | 川公网安备 51140202000112号