高中英语 B4Unit2Working the land Using language课件

1、12Reading 3 Organic Farming4吃动物怕激素；吃植物怕毒素；吃动物怕激素；吃植物怕毒素；喝饮料怕色素；能吃什么，心里没数。喝饮料怕色素；能吃什么，心里没数。 全国人大代表金志国全国人大代表金志国 带到两会上的顺口溜带到两会上的顺口溜567Scanning 1. What is organic farming? Farming without using chemicals. 2. What is the goal of using organic farming methods? To grow good food and avoid damaging the envi

2、ronment or peoples health.8Long-term use of chemical fertilizers can cause damage to the land and peoples health. Farmers and customers turn to organic farming.Other methods to keep the soil fertile. Skimming Problems caused by chemical fertilizersP1.P2.P3.P4.91 Why are chemical fertilizers so popul

3、ar 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? Read the passage and answer the following questions.101 Why are chemical fertilizers so popular in farming today? They are a great w

4、ay to stop crop disease and increase production.112 What problems can be caused by using chemical fertilizers?They can damage the land by killing helpful bacteria and pets and by staying in the ground and underground water for a long time. They damage peoples health by building up in their bodies an

5、d leading to cancer or other illnesses.123 What is organic farming?4 What is the main reason for using organic farming methods? Organic farming means growing cropswithout using any chemicals.The main reason for using organic farming methods is to grow good food and to avoid damaging the environment

6、or peoples health. 13Find and write down the methods and advantages in the passage.Methods of organic farmingAdvantages of methodsFarmers use natural waste from animals.This makes the soil richer in minerals and so more fertile.14Methods of organic farmingAdvantages of methods1 Farmers use natural w

7、aste from animals.1 This makes the soil richer in minerals and so more fertile.2 Farmers often change the kind of crop in each field every few years.2 Changing the crops renews the minerals in the soil and helps it become rich and healthy.15Methods of organic farmingAdvantages of methods3 Farmers pl

8、ant crops with different lengths of roots.3 This uses different levels of soil.4 Farmers sometimes plant grass between crops and leave it in the ground.4 This prevents wind or water from carrying away soil and acts as a natural fertilizer.16Main idea of the passage Chemical fertilizers can cause man

9、y problems, so organic farming is becoming more popular.17Underline and rewording topic sentencesPara1: In recent days, scientists have discovered that using chemical fertilizers for a long time can hurt the land and also peoples health.Para2: There are several problems caused by chemical fertilizer

10、s.18Para3: Organic farming is becoming more popular with some farmers and many customers after these discoveries came out.Para4: There are many organic farming methods for making the land healthy and productive.19Writing a summary In recent days, scientists have discovered that using chemical fertil

11、izers for a long time can hurt the land and also peoples health. There are several problems caused by chemical fertilizers. They hurt the health of the land, stay in the water for a long time and get into peoples bodies through their food. Organic farming is becoming more popular with some farmers a

12、nd many customers after these discoveries came out. Organic farming does not use any chemicals. There are many organic farming methods for making the land healthy and productive. All of these methods try to produce good food and to keep the environment and people healthy.20Expressions 21Language poi

13、nts1 These chemicals in the food supply build up in peoples bodies over time.build up 增强增强; 建立；开发建立；开发 Hard working conditions build upcharacter. 艰苦的工作条件能磨练人的性格。艰苦的工作条件能磨练人的性格。 222 Many of these chemicals can lead to cancer or other illnesses.lead to: 导致；造成导致；造成Too much work and too little restoften

14、 lead to illness. 过量的工作和过少的休息会引起疾病。过量的工作和过少的休息会引起疾病。All roads lead to Rome. 条条大道通罗马。条条大道通罗马。233 They focus on keeping their soil rich and free of disease.focus on:集中集中(注意力，精力等）于注意力，精力等）于You should focus your attention on your work.把注意力集中在你的工作上。把注意力集中在你的工作上。Focus on life.瞄准生活。瞄准生活。 244 This also keep

15、s the air, soil, water and crops free from chemicals. keeps free from /of: 使使免受（影免受（影响，伤害）；使不含（有害物）响，伤害）；使不含（有害物）keep free from emotional reactions 避免激动的反应避免激动的反应 keep free from restrictions 避免受到限制避免受到限制keep from: 阻止阻止; 妨碍妨碍 I hope you will keep from doinganything rash. 我希望你不要做出任何鲁莽的事情来。我希望你不要做出任何鲁莽

16、的事情来。 255.supply.1) 用作名词时：用作名词时：a) 指指“供给供给;供应供应”等等,其反义词为其反义词为demand (需求需求)。 supply and demand 供与求供与求 be in short supply 供应缺乏供应缺乏,供应不足供应不足 food supply 食物供应食物供应 water supply 供水供水26b) 当当“供应品供应品;生活用品生活用品;补给品补给品”等等,常用复数常用复数supplies。 military supplies 军需品军需品 household supplies 家庭用品家庭用品 medical supplies 医用

17、品医用品272) 用作动词时用作动词时,指指“供给供给,提供提供,备办备办”等等, supply sb. (with) sth , supply sth. to /for sb. - They supplied food to/for them. 他们供给他食物。他们供给他食物。 - The library is well supplied with books. 图书馆备有充足的书籍。图书馆备有充足的书籍。286. Crops such as peas or soybeans put important minerals back into the soil, making it ready

18、 for crops such as wheat or corn that need rich and fertile soil. 29分析分析 本句结构比较复杂。其主干结构为本句结构比较复杂。其主干结构为: 主句主句(Crops put important minerals back into the soil) + 状语状语(making it ready for crops)。状语中又包含状语中又包含“make + it + 形容词形容词”结构和由结构和由that引导的定语从句引导的定语从句(that need rich and fertile soil)。 307. Some orga

19、nic farmers prefer planting grass between crops to prevent wind or water from carrying away the soil, and then leaving it in the ground to become a natural fertilizer for the next years crop. 分析分析本句的主干结构是一个简单句本句的主干结构是一个简单句, 其结其结构是构是: 主语主语(farmers) + 谓语谓语(prefer) + 并列宾语并列宾语(planting . + leaving .)。31

20、其中其中between crops和和in the ground作作地点状语。地点状语。两个宾语后面又分别带有一个不定式两个宾语后面又分别带有一个不定式作目的状语（作目的状语（to prevent wind or water from carrying away the soil和和to become a natural fertilizer for the next years crop）。）。 32 nPlease dont confuse Australia with Austria. 别把澳大利亚和奥地利混淆了。别把澳大利亚和奥地利混淆了。 nMuch to my regret, I

21、cant accept your invitation.很抱歉很抱歉,我不能接受你的邀请。我不能接受你的邀请。nWe must increase production levels. 我们必须提高生产水平。我们必须提高生产水平。nMany diseases are caused by bacteria. 许多疾病是由细菌引起的。许多疾病是由细菌引起的。nThat child is an absolute pest! 那孩子讨厌极了！那孩子讨厌极了！nGrowth is a function of nutrition. 长身体是由营养决定的长身体是由营养决定的33 Coal is a miner

22、al. 煤是一种矿物。煤是一种矿物。 New scientific discoveries are being made every day. 每天都有新的科学发现。每天都有新的科学发现。 This kind of soil contains much alkali. 这种土壤含碱丰富。这种土壤含碱丰富。 He is trying to reduce the familys expenses. 他正尽力减少家庭开支。他正尽力减少家庭开支。 Unhappiness is the root cause of his illness. 不开心是他生病的根源。不开心是他生病的根源。34 It took

23、 me an hour to skim the book. 我花了一小时把这本书浏览了一遍。我花了一小时把这本书浏览了一遍。 Please underline the important items. 请在重要事项的下面划线。请在重要事项的下面划线。 Please write me a summary of this report. 请替我写一份这份报告的摘要。请替我写一份这份报告的摘要。 He made several favorable comments about their candidate. 他对他们的候选人发表了一些有利的评论。他对他们的候选人发表了一些有利的评论。35Exerc

24、ises His mistakes _ his failure.Please _ your mind_ the following problem.5. Children should _ violence.3637Listening 38chemical fertilizer cow dung用化学肥料和有机肥料的区别用化学肥料和有机肥料的区别:39The possible bad effects of chemical fertilizers on the fruit and vegetablesthat we eat today.As you listen to this dialogu

25、e, keep in mind what you have just read about chemical fertilizers. What is the main topic of the conversation?40Listen to the dialogue a second time. Decide if the following statements are true or false, according to the conversation.Give your reasons.1 Paul thinks that Carrie is not telling him th

26、e truth.2 Using chemical fertilizers always makes vegetables empty inside.TrueFalse413 Todays fruit is not as healthy for people as fruit fifty years ago.4 Eating more vegetables might not always be good for us.5 All of todays vegetables look healthy but in fact are not.FalseTrueTrue42Listening text

27、 WHATS WRONG WITH THEVEGETABLES?Girl: Hey, Paul, listen to this a magazine article about a farmer who used too much chemical fertilizer on his fields. When his vegetables were picked, they were all found to be empty!43BOY: Empty? Youre joking, Carrie that cant be true!Girl: I didnt believe it either

28、! This article says this can happen sometimes with vegetables like cucumbers, carrots and pumpkins. This chemical fertilizer makes the vegetables grow fast to look big and beautiful, but theyre empty inside! 44 BOY: You know, Ive noticed that sometimes my mum buys carrots from the supermarket that h

29、ave big holes down the center. I guess that must be from using chemical fertilizers! GIRL: Yeah, thats what the magazine says! The main point of the article, though, isnt about holes in our vegetables. 45 Its talking about why the fruit and vegetables we eat today arent as nutritious as the ones our

30、 grandparents ate.BOY: What? My mum is always telling me to eat more vegetables, because theyre good for me!GIRL: Yeah, I know my mother says that same thing! And its true -46they are good for us but the problem is that they arent healthy enough! All these chemical fertilizers they kill off both the

31、 bad and the good things in the ground. The ground doesnt have enough vitamins and minerals any more to help crops grow healthy.47BOY: So if our fruit and vegetables were grown with chemical fertilizers, they might look healthy, but probably arent really healthy? I guess weve got to stop using so ma

32、ny chemical fertilizers to grow our food!48Speaking49The farmer is persuading the customer to buy his/her “green food”. You need to The advantages are Id prefer because Whats the advantage of Should I/we.?50Its better ofIts more expensive but I dont like becauseId ratherThis is good value becauseYou

33、ll taste the difference whenIf I have a choice Ill chooseIts a great pity that51Sample dialogue:F= Farmer C= CustomerF: Good morning! Would you like some organic carrots this morning?C: Hmm Theyre a little expensive! What is the advantage of ？52F: The advantage of these vegetables is that they are g

34、reen food so theyre safe to eat and good for your family.C: But whats the advantage of having green food? I know all vegetables are good for you and those down the road look green too. And I can buy them at half the price there.53F: Well, let me explain. Id rather feed my family on green food than o

35、ther vegetables because they are grown without chemical fertilizers.C: But the price is too expensive! Id prefer to buy good food if I can afford it.54F: This is good value for money because youll have healthier children. They wont have to take time off work. In the long run youll be benefit.C: Certainly Id like to buy what is safe and healthy. Perhaps Ill try some of your vegetables and if they are as good as you say, Ill be back next week!55Writing56Sample writingBUY THE BEST VEGETABLES HERE We sell only green food in this farm shop! The best c