ChemicalorOrganicFarming1实用学习教程.pptx

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1、Revision动名词作主语或宾语第1页/共30页填入动名词的适当形式 1.Therunnerfellandhurthisleftlegbuthequicklygotupandwenton_(run)2.Howabout_（skate）thisafternoon？3.Areyougoodat_（swim）？9.Weareallinterestedin_(play)games4.Hespent30yuan_(buy)thatdictionary5.Areyouenjoying_(live)onthefifthfloor？6.Afterhefinished_(write),hehadagoodre

2、strunningskatingswimmingplayingbuyinglivingwriting第2页/共30页 单项选择 1.Thethieftookawaythewomanswalletwithout_.A.beingseenB.seeingC.himseeingD.seeinghim2.Noonecanavoid_byadvertisements.A.tobeinfluencedB.beinginfluencedC.influencingD.havinginfluenced3.Theyareconsidering_beforethepricesgoup.A.ofbuyingtheho

3、useB.withbuyingthehouseC.buyingthehouseD.tobuythehouse第3页/共30页4.Yourshirrneeds_youdbetterhaveitdonetoday.A.iron(烫衣)B.toironC.ironingD.beingironed5.Pleasestop_.Ihavesomethingimportantto_you.A.saying;talkB.telling;sayC.talking.speakD.talking;tell6.Doyoufeellike_outorwouldyourather_dinnerathome?A.going

4、;tohaveB.togo;tohaveC.togo;havingD.going;have第4页/共30页7.Itsnouse_togetabargainthesedays.A.toexpectB.expectingC.wantingD.youexpect8.Itwasimpoliteofhim_without_goodbye.A.toleave;sayingB.leaving;tosayC.toleave;tosayD.leaving;saying9.Heislookingforwardto_hisholidayinBritain.A.spendB.havespentC.spendingD.

5、havingbeenspent10.Heisverybusy_hispapers.Heisfartoobusy_callers.A.towrite,toreceiveB.writing;toreceiveC.writing;receivingD.towrite;forreceiving第5页/共30页 翻译下列句子 1.读书是一种艺术。_2._(爬山)isreallyfun.3.Workingintheseconditionsisnotapleasurebutasuffer._4._overspiltmilk.洒掉的牛奶哭也没用。5.Theircomingtohelpwasagreatenco

6、uragementtous._Readingisanart.Climbingmountains在这种工作条件下工作不是愉快而是痛苦。Itisnouse/nogoodcrying他们前来帮忙对我们是极大的鼓励。第6页/共30页New lessonUsing Language:Chemical or Organic Farming?第7页/共30页第8页/共30页第9页/共30页Group A:Farmers grow them using chemical fertilizers.Group B:Farmers grow them using natural fertilizers.Whichg

7、roupwouldyouchooseandwhy?第10页/共30页 Discussion:What are the disadvantages of chemical farming?第11页/共30页Using Language:Chemical or Organic Farming?第12页/共30页Listening:Listen to the text and find out“What is organic farming”.Organic farming is simply farming without using any chemicals.第13页/共30页Fast rea

8、ding:Read the text and underline the topic sentence of each paragraph.Para1:Para2:Recently,however,scientistshavebeenfindingthatlong-termuseofthesefertilizerscancausedamagetothelandand,evenmoredangerous,topeopleshealth.Whataresomeoftheproblemscausedbychemicalfertilizers?第14页/共30页Para3:Para4:Fast rea

9、ding:Read the text and underline the topic sentence of each paragraph.Withthesediscoveries,somefarmersandmanycustomersarebeginningtoturntoorganicfarming.Organicfarmersalsousemanyothermethodstokeepthesoilfertile.第15页/共30页Careful reading:Read the text carefully and answer the following questions.Para

10、1.Why are chemical fertilizers so popular in farming today?They can stop crop disease and increase production.第16页/共30页Para 2:What are some of the problems caused by chemical fertilizers?Answer:a.b.c.Fertilizers damage the land by killing helpful bacteria and pests;Too many chemicals in the food sup

11、ply can lead to cancer or other diseases.Food grown with chemical fertilizers grow too fast to be full of much nutrition.第17页/共30页Para 3:Why do organic farmers prefer using natural waste from animals as fertilizer?Because they feel that this makes the soil in their fields richer in minerals and so m

12、ore fertile.This also keeps the air,soil,water and crops free from chemicals.第18页/共30页Para 4:What other methods do organic farmers to keep the soil fertile?a.b.c.They often change the kind of crop in each field every few years;They also plant crops to use different levels of soil;Some of them prefer

13、 planting grass between crop to prevent wind or water from carrying away the soil.第19页/共30页Retelling:Retell the text by filing in the blanks.Overthepast50years,_hasbeenverycommoninfarming,asitsapracticalwayto_and_.However,itlong-termuseofthemcan_thelandandeventopeopleshealth.Chemicalfertilizersdamag

14、ethelandby_thehelpfulbacteriaandpests.Oncethechemicalsgetinsidethecropstheyarehardto_andmanyofthechemicalscan_diseases.Besides,foodgrownwithchemicalsgrow_fast_befullofmuchnutrition.usingchemicalfertilizersstopcropdiseaseincreaseproductioncausedamagetokillingwashedoffleadtotooto 第20页/共30页Thankstothes

15、ediscoveries,somefarmersarebeginningto_organicfarming.They_keepingthesoilrichand_diseaseTheyprefer_naturalwastefromanimals_fertilizer.Organicfarmersalsouseothermethodstokeepthesoilfertile.Theyoftenchangethekindofcropineachfield_.Theyalsoplantcropstouse_ofsoil.Someofthempreferplanting_betweencropsto_

16、windorwaterfrom_thesoil.turntofocusonfreefromusingaseveryfewyearsdifferentlevelspreventgrasscarryingaway第21页/共30页Language pointsUsing Language:Chemical or Organic Farming?第22页/共30页1.Recently,however,scientistshavebeenfindingthatlong-termuseofthesefertilizerscancausedamagetothelandand,evenmoredangero

17、us,topeopleshealth.然而，最近科学家发现长期使用这些肥料会造成土地受损，甚至更危险地是，会对人们的健康造成危害。a.have been finding 第23页/共30页More examples:Wehavebeenseeingquitealotofeachotherrecently.Wherehaveyoubeen?Wehavebeenlookingforyoueverywhere.Hehasbeensayingthatforyears.Ithasbeenrainingeverydaythismonth.最近我们常常见面。你刚才在哪儿？我们一直在到处找你呢！这话他已经说了

18、好几年了。这个月天天下雨。第24页/共30页规则归纳：1.形式：2.时态：3.使用语境：havebeendoing现在完成进行时a.表示从过去某时开始一直持续到现在的动作，并且还将持续下去。TheChinesehavebeenmakingpaperfortwothousandyears.中国有2000年的造纸历史。(动作还将继续下去)IhavebeenlearningEnglishsincethreeyearsago.自从三年前以来我一直在学英语。（动作还将继续下去）第25页/共30页b.表示从过去某时开始一直持续到现在的动作,在说话时刻之前刚刚结束的动作。Wehavebeenwaitingf

19、oryouforhalfanhour.我们已经等你半个钟头了。(动作不再继续下去)1.ImsureAndrewwillwinthefirstprizeinthefinal.Ithinkso.He_foritformonths.(2008江苏)A.ispreparingB.waspreparingC.hadbeenpreparingD.hasbeenpreparing 第26页/共30页2)CathyistakingnotesofthegrammaticalrulesinclassatSunshineSchool,whereshe_Englishforayear.(2007湖南)A.studie

20、sB.studiedC.isstudyingD.hasbeenstudying3)Ihavegotaheadache.Nowonder.You_infrontofthatcomputertoolong.(2007江西)A.workB.areworkingC.havebeenworkingD.worked第27页/共30页4)Nowthatsheisoutofjob,Lucy_goingbacktoschool，butshehasntdecidedyet.(北京)A.hadconsideredB.hasbeenconsideringC.consideredD.isgoingtoconsider5)Hi,Tracy，youlookpale.Iamtired.I_thelivingroomallday.A.paintedB.hadpaintedC.havebeenpaintingD.havepainted第28页/共30页第29页/共30页感谢您的欣赏！第30页/共30页