高中英语(m4)教学资料-u2oganicfarming.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Part 3.,I.DAABD ADBAD BCBAD CDD,1.Thanks to/Because of 2.freedom,3.four times as high 4.is certain/sure to 5.Getting up early is 6.with the hope of,III.1.a the 2.grow,改为,growing 3.feed,前加,to 4.country,改为,countries 5.another,改为,other 6.why,改为,that 7.kind,改为,kinds,8.especial,改为,especially 9.most,前加,the 10.in,去掉,CHEMICAL OR,ORGANIC FARMING?,Unit 2,Using Language,Reading on P.14,Look at the title and picture and predict the content.,Chemical or Organic Farming?,What do we put on the soil to makes crops,grow better?,It is,fertilizer,.,How many kinds of fertilizers do farmers use?,There are two kinds.,They are,chemical,fertilizers and,natural,ones.,Chemical farming,is farming by using _ _to stop crop disease and increase production.,Organic farming,is simply farming,_ _ _ _.,What is chemical farming?,What is organic farming,?,chemical fertilizers,without using any chemicals,.,Why,are chemical fertilizers so popular,in farming?,2.What,problems,can be caused by using,chemical fertilizers?,3.What is the main,reason,for using organic,farming methods?,1.Why are chemical fertilizers so popular in farming today?,Because farmers welcomed them as _ to stop crop disease and increase production.,a great way,Long-term use of these chemical fertilizers,can _and,_ to peoples health.,cause damage to the land,more dangerous,Paragraph 1,Paragraph 2,2.,What are the problems caused by chemical,fertilizers?,First,they _.,Second,chemicals also stay _.,These chemicals can _,_,.,Third,fruit,vegetables and other food,grown with chemical fertilizers usually,_.,They look _,.,for a long time,lead to cancer or,grow too fast to be full of much nutrition,beautiful,damage the land,3.What is the main reason for using organic farming methods?,The main reason for using organic farming methods is,to _and,to _,or_,.,grow good food,avoid damaging the environment,peoples health,A summary,In recent days,scientists have discovered that _ chemical fertilizers for a long time can hurt the land and also peoples health.There are several problems _ by chemical fertilizers.They _ the land,_ in the ground and underground water for a long time and get into peoples bodies through their_.Organic farming is becoming more popular _some,using,caused,damage,stay,food,with,farmers and many customers after these discoveries came out.Organic farming does not use any_.Organic farmers use many _ to keep the soil fertile.All of these methods try to produce good food and _ causing damage to the environment or peoples health.,chemicals,methods,avoid,Translation,1.,长期使用,2.,化肥,3.,给造成损害,4.,将洗掉,5.,逐渐增强,6.,导致,7.,有机耕作,8.,集中于,9.,使免受,long-term use,chemical fertilizers,cause damage to,wash off,build up,lead to/result in,organic farming,focus on,keep free from,10.,保持土壤肥沃,11.,每隔几年,12.,防止水土流失,keep the soil fertile,every few years,prevent wind or water,from carrying away,the soil,What other,ways,can be used to,increase production,?,2.What other,methods,can be used for,organic farming,?,Discussion in groups of 4.One writes down,and then reports.,a.Water the plants with,clean,water.,b.Leave the,earth,in its natural state after the harvest.,c.Grow crops without,pesticides,d.Grow,away from,industrial areas.,e.Keep animals,free of,drugs.,A.Animal waste b.Use pesticide,pestisaid n.,农药,c.Irrigate in time d.Plant at the right time,e.Choose the best seeds,f.,GM foods(,genetically-modified),Listening,This is the VOA Special English,What is it about?,Listening,This is the VOA Special English,Agriculture Report.,Agricultural scientists in Switzerland have,demonstrated,论证,the _ effects of organic,farming methods.Organic farms use no,man-made _ to increase crops or,control insects and disease.The study showed,that _ fields produced fewer crops,on,average,than other fields.However,the scientists,say the organic _ improved the_,of the soil and used half as much energy.,long-term,chemicals,organic,methods,health,Underline useful phrases,1.over the past half century,2.increase production,3.damage the land,4.build up,5.lead to,6.without using any chemicals,7.focus on,8.reduce disease,9.grow strong and healthy,10.use as 11.rich in,12.keep.free from,13.every few years 14.carry away,Write a summary,chemical fertilizers popular because,scientists have discovered,some problems,Now organic farming,use many kinds of methods,All these methods try to,Homework,Write the summary and,hand them in.,Organic Farming,How many kinds of fertilizers do farmers use?,There are two kinds.They are chemical fertilizers and natural ones.,Main idea of the passage,Chemical fertilizers can cause many,problems,so organic farming is,becoming more popular.,ORGANIC FARMING,Structure of the text,I using chemical fertilizers for a long time can hurt the land and also peoples health,II Problem caused by chemical fertilizers,1.Damage the land by killing the helpful bacteria and pests as well as the harmful ones,2.Lead to cancer or other illness.,3.Food g。