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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,*,Using Language,B4U2,What is the substance we put on the soil which makes crops grow,It is fertilizer.,How many kinds of fertilizers do farmers use,There are two kinds. They are chemical fertilizers and natural ones.,Which kind do farmers use when they are doing organic farming,Do you know about organic farming,ORGANIC FARMING,Organic farming is simply farming without using any chemicals.,1. Why are chemical fertilizers so popular in farming today,Read the passage and answer the,following questions.,They are a great way to stop crop disease and increase production.,2. What is organic farming,Organic farming means growing crops without using any chemicals.,3. What is the main reason for using organic farming methods,The main reason for using organic farming methods is to grow good food and to avoid damaging the environment or peoples health,.,Read the passage carefully and fill in the blanks.,Chemical,Farming,Advantages,Stopping crop disease and,increase _,production,Chemical,Farming,Disadvantages,Damaging the land:,killing the helpful _,Damaging peoples health:,Many chemicals in the food supply can lead to cancer or other illnesses.,Food grows too fast to be full of much _.,bacteria and pests,nutrition,Organic,farming,_,To grow good food and avoid damaging the environment or peoples health,Goal,Organic,farming,Methods,Using _ waste from animals as fertilizer,Changing _ in each field every few years, Using _ of soil to plant crops, Planting _ between crops,grass,natural,the kind of crop,different levels,Project,Persuade farmers to grow the crops by organic farming with the knowledge learnt.,What is organic farming,What fertilizer should they use Why,How to plant the different crops,.,1. Many of these chemicals can lead to cancer .,lead to 用法,寓词于境 阅读以下句子，注意lead to的意思和用法。,1) His carelessness led to the accident.,2) This test is obviously bad because it leads to incorrect learning.,3) Too much work and too little rest often leads to illness.,Language points,自我归纳,lead to意为“_, 后多跟名词或代词。,导致、造成(后果),联想,result in引起(某种结果)、使获得(某种成果)、结果。,如：,The accident,resulted in,two deaths.,result from由造成、因而产生。,如：,Sickness sometimes,results from,eating too much.,即学即练,用lead to的适当形式完成句子。,1. Students should always remember that hard work is the main way which _ success.,2. The bad weather _ a terrible accident a few days ago.,led to,leads to,2. They focus on keeping their soil rich and free of disease.,focus用法,根据语境推断focus在以下句子中的含义, 并从a-d中找出与每句话中的focus相符合的英文释义。,1. The focus of the meeting changed from population growth to the education of women.,2. Bring the object into focus if you want a clear photograph.,3. She tried to focus her mind on her work.,4. She turned the camera and focused on Martins face.,a. the thing, person, situation, etc. that people pay special attention to,b. a point or distance at which the outline of an object is clearly seen by the eye or through a lens,c. to point a camera at something, and change the controls slightly so that you can see that thing clearly,d. to give special attention to one particular person or thing, or to make people do this,c,a,b,d,focus n. 意为“焦点、中心点;,v. 意为“集中、聚焦,常构成短语 focus on, 意为“集中(注意力、精力等)于。,翻译以下句子。,1. Because of his strange clothes, he immediately became the focus of attention when he entered the office.,由于他的奇装异服, 所以一走进办公,室他便成了大家注意的焦点。,2.,Focus,your camera,on,those trees.,3. Im so tired that I cant,focus on,anything today.,把照相机的焦点集中在那些树上。,今天我太累了, 精神集中不起来。,3. This also keeps the air, soil, water and crops free from chemicals.,keep free from “远离或“防止,keep free from emotional reactions 防止冲动的反响 keep free from restrictions 防止受到限制,4.,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,5.,Crops,such as peas or soybeans,put important minerals back into the soil,making it ready for crops,such as wheat or corn,that need rich and fertile soil,.,分析,本句构造比较复杂。其主干构造为: 主句(Crops put important minerals back into the soil) + 状语(making it ready for crops)。,状语中又包含“make + it + 形容词构造和由that引导的定语从句(that need rich and fertile soil)。,6. Some organic 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,本句的主干构造是一个简单句, 其构造是: 主语(farmers) + 谓语(prefer) + 并列宾语(planting . + leaving .)。,其中between crops和in the ground作地点状语。,两个宾语后面又分别带有一个不定式作目的状语to prevent wind or water from carrying away the soil和to become a natural fertilizer for the next years crop。,Expressions,1. 化肥,2. 对造成损害,3. 洗掉某物,4. 导致; 造成(后果); 通往,5. 逐渐增强, 建立,6. 另外(还有),7. 使免受(影响);,8. 集中(注意力、精力)于,9. 每隔几年,10. 防止做,chemical fertilizers,cause/do damage to,wash off,lead to,bulid up,in addition (to),keepfree from/of,focus on,every few years,avoid doing,
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