【課件】Unit 5 Working the land Using language for writing 人教選擇性必修第一冊(cè)

1、Reading for WritingChemical Versus Organic FarmingIt is fertilizer. What is the substance we put on the soilto make crops grow?Pre-readingAChemical fertilizersWhat kind of fertilizers do farmers use?BNatural fertilizersNatural waste from animals and dead plantsWhat kind of fertilizers do farmers use

2、?Its a product of organic farming.AIts a product of chemical farming.Borganic farmingchemical farmingorganic farmingorganic farmingchemical farmingorganic farmingMake a judgement: which is chemical farming and which is organic farming.BNow, which one do you prefer?AWhy?1. in my eyes/ in my opinion f

3、rom my point of view My view/ opinion is that .2. Id prefer . Id rather .Read the text and then Match the main idea with each paragraph. C Organic methods for producing rich soil D The problems with chemical farmingPara. 1-2Para. 3Para. 5 A What organic farming is B Why man-made chemicals are still

4、used in farmingPara. 4Readcompletebacteria and insectsprohibiteddamage they usegrow too fastnutritionnatural waste from animalsevery yeardifferent depthsdemand for food around the worldReadcompletechange the kind of cropChemical pesticides and artificial fertilisers have been in widespread use in fa

5、rming. _Pesticides can damage the land by killing only harmful bacteria and insects. _Organic farmers focus on keeping their soil rich and free of disease through natural means. _The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to p

6、eoples health. _TTFTTrue or falsenot only.but also helpful onesWhat are the organic methods mentioned in the text? (Para3&4)1. use natural waste from animals as fertilizer.2. change the kind of crop grown in each field every year.3. plant diverse crops that use different depth of soil to keep it ric

7、h.use natural waste from animals as fertilizerchange the kind of crop grown in each field every year.to put important minerals back into the ground to make the soil in the fields richer in mineralsplant diverse crops that use different depth of soil to keep it rich.to keep the soil richMethods Purpo

8、ses Whats the goal of using different organic farming methods?（Para.4） The goal of using different organic farming methods is to grow good food while avoiding damage to the environment or to peoples health. Why cant we stop the use of man-made chemicals in agriculture entirely? A. Organic farming co

9、st us a lot of money. B. Organic farming can meet peoples need. C. Chemical farming brought us huge profit. D. Chemical farming helps serve the need for food. Over time, however, what some scientists have found is that their long-term use can sometimes harm both the land and peoples health. 然而，隨著時(shí)間的

10、推移，一些科學(xué)家發(fā)現(xiàn)長(zhǎng)期使用農(nóng)藥和化肥會(huì)造成土地受損，對(duì)人們的健康造成危害。digest vt. 消化；吸收 n. 文摘；摘要 She couldnt digest food properly. 她無(wú)法正常消化食物。They learn well but seem to need time to digest information. 他們學(xué)得很好，但似乎需要時(shí)間來(lái)吃透這些知識(shí)。 This affects the crops grown on the land and, in turn, the animals and humans who digest them. 這會(huì)影響到生長(zhǎng)在土地上的農(nóng)

11、作物，反過(guò)來(lái)也會(huì)影響到消化它們的動(dòng)物和人類。in turn 反過(guò)來(lái)；轉(zhuǎn)而；輪流，依次 We look after him in turn. 我們輪流照顧他。These behavioral changes may in turn be harmful to the health. 這些行為的改變反過(guò)來(lái)可能對(duì)健康產(chǎn)生危害。 As an alternative, some farmers have switched to organic farming, and many customers have turned to organic food when they shop at the loc

12、al grocery. 作為一種選擇，一些農(nóng)民已經(jīng)轉(zhuǎn)向有機(jī)農(nóng)業(yè)，許多顧客在當(dāng)?shù)仉s貨店購(gòu)買有機(jī)食品。alternative n. 供替代的選擇 adj. 供選擇的；選擇性的 Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops.句意：種植不同的作物是因?yàn)樗鼈儼阎匾牡V物質(zhì)放回地下，使它為下一批作物再次做好準(zhǔn)備。句子結(jié)構(gòu)分析why引導(dǎo)的主語(yǔ)從句because引導(dǎo)的表語(yǔ)從句現(xiàn)在分詞作狀語(yǔ)系動(dòng)詞 Why different crops are grown is because they put important minerals back into the ground, making it ready for the next batch of crops. What keeps them from