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1、B4U2What 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? O
2、RGANIC 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 m
3、eans 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 Farm
4、ingAdvantages Stopping crop disease and increase _productionChemical FarmingDisadvantagesDamaging 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 pestsnutritionOrgani
5、c farming_To grow good food and avoid damaging the environment or peoples healthGoalOrganic farmingMethods Using _ waste from animals as fertilizerChanging _ in each field every few years Using _ of soil to plant crops Planting _ between cropsgrassnaturalthe kind of cropdifferent levelsProjectPersua
6、de 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 用法用法寓词于境寓词于境 阅读下列句子，注意阅读下列句子，注意lead to的意思的意思和用法。和用法。1) His carelessness
7、 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.自我归纳自我归纳 lead to意为意为“_”, 后多跟后多跟名词或代词名词或代词。导致、造成导致、造成(后果后果)联想联想 result in引起引起(某种结果某种结果)、使获得、使获得(某种成果某种成果)、结果结果。如：如：The accident resulted in two deaths.
8、result from由由造成、因造成、因而产生。而产生。如：如：Sickness sometimes results from eating too much. 即学即练即学即练 用用lead to的适当形式完成句子。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 toleads to2. They focus on keeping the
9、ir soil rich and free of disease. focus用法用法 根据语境推断根据语境推断focus在下列句子中的在下列句子中的含义含义, 并从并从a-d中找出与每句话中的中找出与每句话中的focus相符合的英文释义。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 h
10、er 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 tob. a point or distance at which the outline of an object is clearly seen by the eye or through a lensc. to point a camera at something, and change the co
11、ntrols 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 thisc abdfocus n. 意为意为“焦点、中心点焦点、中心点”; v. 意为意为“集中、聚焦集中、聚焦”常构成短语常构成短语 focus on, 意为意为“集中集中(注意力、注意力、精力等精力等)于于”。翻译下列句子。翻译下列句子。1. Because of his strange clothes, he i
12、mmediately became the focus of attention when he entered the office. 由于他的奇装异服由于他的奇装异服, 所以一走进办公所以一走进办公室他便成了大家注意的焦点。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。把照相机的焦点集中在那些树上。今天我太累了今天我太累了, 精神集中不起来。精神集中不起来。3. This also keeps the air
13、, soil, water and crops free from chemicals. keep free from “远离远离”或或“避免避免”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 4. reduce v. 减少减少, 降低降低e.g. 公司尽力通过减少花销来提高利润。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。今年我们已经减少了业务开支。We _
14、 expenses this year. reducing costshave reduced5. 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
15、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)。 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 fertilize
16、r 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, 其结构是其结构是: 主语主语(farmers) + 谓语谓语(prefer) + 并列宾语并列宾语(planting . + leaving .)。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两个宾语后面又分别带有一个不定式作目的状不定式作目的状语语（to prevent wind or water from carrying away the soil和和to become a natural fertili
17、zer for the next years crop）。）。 Expressions 1. 化肥化肥2. 对对造成损害造成损害3. 洗掉某物洗掉某物4. 导致导致; 造成造成(后果后果); 通往通往5. 逐渐增强逐渐增强, 建立建立6. 另外另外(还有还有)7. 使使免受免受(影响影响);8. 集中集中(注意力、精力注意力、精力)于于9. 每隔几年每隔几年10. 避免做避免做chemical fertilizerscause/do damage towash offlead tobulid upin addition (to)keepfree from/offocus onevery few yearsavoid doing
