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1、Chemical Or Organic Farming?,chemical production bacteria pest nutrition mineral discovery,adj. 化学的; 关于化学的 n. 生产; 制造 n. 细菌 n. 害虫; 害兽; 害鸟 n. 营养; 滋养; 食物 n. 矿物; 矿石 n. 发现; 发觉,focus soil reduce root skim underline summary comment,n. 焦点; 中心点 vt. 集中; 聚焦 n. 土壤 vt. 减少; 减缩 n. 根; 根源 vt. 浏览; 略读 vt. 画底线标出; 强调 n.
2、 总结; 摘要; 概要 n. 评论; 议论 vi. 做出评论,build up lead to focus on keep free from/of,逐渐增强; 建立; 开发 导致; 通向通往 集中 (注意力, 精力等) 于 使免受(影响, 伤害等)； 使不含(有害物),1. Have you ever been to the countryside? 2. Do you know how to work on a farm?,Step 1: warming up,Lets go to the QQ happy farm!,First, buy the seeds from the store
3、.,Second, we need to plow（犁田） or turn over the soil.,Third , we sow （播种）the seeds in the soil.,Finally, we can have a harvest.,to improve the output of the crops,fertilizer,water the crop,rid the soil of the weed,fertilize the soil,kill off the pest,to improve the output of the crop,fertilizer,How m
4、any kinds of fertilizers do farmers use? There are two kinds. They are chemical fertilizers and natural ones.,chemical fertilizers natural fertilizers,Chemical Or Organic Farming?,Reading,Task 1 Listening （3mins）,Find out the main idea of these four paragraphs.,Long-term use of chemical fertilizers
5、can cause damage to the land and peoples health.,Problems caused by chemical fertilizers.,P1.,P2.,Farmers and customers turn to organic farming.,Other methods to keep the soil fertile.,P3.,P4.,chemical fertilizers,Why are chemical fertilizers so common in farming today?,Many farmers welcomed them as
6、 a great way to stop crop disease and increase production.,Paragraph 1,2. After the long-term use of chemical fertilizers, what have scientists found?,Long-term use of chemical fertilizers can cause damage to the land and , even more dangerous, to peoples health.,Paragraph 2,they damage the_,killing
7、 the _ bacteria and pests as well as the _ones,Chemicals stay in the_ and _water for a _time,this affects _,_ and_,fruit ,vegetables and other food grown too _; they look so_,not be full of nutrition; more _than vitamins and minerals,land,helpful,harmful,ground,underground,long,crops,animals,humans,
8、fast,beautiful,water,Paragraph3 1.Some farmers and many customers begin to turn to chemical farming. 2. Organic farming is simply farming without using any fertilizer. 3.Organic farmers prefer using natural waste from animals as fertilizers.,F,F,T,Paragraph 3 and 4,The ways to keep the soil fertile
9、1. 2. 3. 4.,using natural waste from animals as fertilizer,changing the kind of crop in each field,planting crops to use different levels of soil,planting grass between crops to prevent wind and water from carrying away the soil,In recent days, scientists have discovered that using_ fertilizers for
10、a long time can hurt the land and also peoples _. There are several _ caused by chemical fertilizers. They hurt the health of the land,_ in the water for a long time and get into peoples _ through their food.,chemical,bodies,problems,health,stay,Summary,_ farming is becoming more popular. Some farme
11、rs and many _ turn to it . Organic farming does not use any chemicals.,Organic,customers,Discussion,If you are a landowner, you want to grow some kinds of crops, what will you do?,Will you use any fertilizer to improve the production? Why?,Language Points,build up 增强; 建立; 开发 Hard working conditions
12、build up character. Doing regular exercise can build up my health.,Many of these chemicals can lead to cancer or other illnesses. 1.Too much work and too little rest often lead to illness. 2.All roads lead to Rome. 3.War only leads to violence.,They focus on keeping their soil rich and free of disea
13、se. You should focus your attention on your work. We should focus our energy on our customers needs.,reduce v. 减少, 降低 e.g. 公司尽力通过减少花销来提高利润。 The company tries to increase profits by _ . 今年我们已经减少了业务开支。 We _ expenses this year.,reducing costs,have reduced,This also keeps the air, soil, water and crops free from chemicals. 1.We put our books in the box to keep them free from dust. 2.You should keep the area free from pollution.,Homework,1. Review what you have learned in the class . 2. Do exercises on P31-32 in zhuangyuanqiao.,Thank you for attention！,