必修四unit2全单元课文讲解市公开课一等奖省赛课微课金奖课件

Unit2WorkingtheLand1策划：《学生双语报》1/641.darkenedskinfromspendingtoomuchtimeinthesun__________2.needforfood__________3.makesth.orsb.freeof__________4.becomelargerinsize,numberoramount__________5.makeinformationandideasknowntomanypeople__________6.preferto__________7.becauseof__________8.tryextremelyhardtoachievesth.__________9.sendthingstoforeigncountriesforsale__________sunburnthungerrid…ofexpandcirculatewouldratherthankstostruggleexport2策划：《学生双语报》2/64

3/4ofourearthiscoveredwithwater!1/2ofthispieceistoohot,coldorwetforfarming!3/4ofthispartisusedforroads,houses,schools!!_____oftheearthisusedforfarming!!!1/32Pre-reading3策划：《学生双语报》3/64Onlytheskincanbeusedtogrowplants!

population4策划：《学生双语报》4/64superhybridrice

APioneerForAllPeople5策划：《学生双语报》5/64Name_____________Age_____Job_________________Education__________________________Hobbies__________________________________________________________YuanLongping84agriculturescientistviolinmusic,mah-jong,swimming,reading

SouthwestAgriculturalCollege

PersonalInformation6策划：《学生双语报》6/64DetailedreadingRead

eachparagraphascarefullyasyoucan.Afteryoufinishthereading,let’sdosomeexercises.7策划：《学生双语报》7/64Para.1WhatdoesDrYuanlooklike?Hehasa

sunburntfaceandarmsandaslim,strongbody.Heismorelikeafarmerthanascientist.Whatdoeshegrow?Hegrowswhatiscalled

superhybridrice.8策划：《学生双语报》8/64Para.2A.

Hewasbornintoapoorfarmer’sfamily.B.

HegraduatedfromSouthwestAgriculturecollege.C.

In1950,Chinesefarmersproduced50million

tonsofrice.D.

Hesearchedawaytoincreasericeoutputs

withoutexpandingtheareaoffields.E.

Hehelpsridtheworldofhungerbycirculating

hisknowledgeinlessdevelopedcountries.inrighttimeorderacbed9策划：《学生双语报》9/64Para.3WhichoneisnottrueaboutDrYuan?A.He

issatisfiedwith

hislifebecauseheis

nowrichandfamous.B.Hecareslittleaboutmoneyandfame.C.He

wouldrather

workthan

leada

comfortable

life.D.Heenjoysasimplerlifethanmostrichandfamouspeople.10策划：《学生双语报》10/64Para.4WhatdidDrYuan’sricelooklikeinhisdream?Thericeplantswereastallassorghum.Eachearofricewasasbigasanearofcorn.Eachgrainofricewasashugeasapeanut.11策划：《学生双语报》11/64Achievements:1.

2.3.Hegrowssuperhybridricethathasahigh_________.He________hisknowledgeabroad.Hegivesmoneyto_____othersfortheirresearch.outputcirculatesequip12策划：《学生双语报》12/64Post-readingThereisstillhungerintheworldIfyouhadthechancetodosomethingtohelpendhungerintheworld,whatwouldyoudo?13策划：《学生双语报》13/64Measurestoendhunger:Useourenergyandfoodwisely.

Don’twaste.Educatefarmerssothattheycanusehightechnologyinfarming.Findsomenewwaystostopthepollutiontotheenvironmentandprotectthesoilinthefield.Findanewsortoffertilizertogivericeenoughnutrition.5.Controlthepopulationintheworld.14策划：《学生双语报》14/64Exercise1

sunburnt;rid…of;expand;circulate;wouldrather;struggle;export;satisfiedwith;equip;crop;thankstoExercise2

1.Statistics;globe;2.Super;nationalities;3.Hunger,disease4.Vietnam,occupations5.Freedom,exportedExercise3Decade,struggle,expanding,equipped,output,grain,crops,battles,disturbing

15策划：《学生双语报》15/641Indeed,hissunburnt……farmers,forwhomhehasstruggledforthepastfivedecades.指出从句类型，及为何用for我们必须努力为过上幸福生活而奋斗。Wemuststruggleforahappylife.这位老人一直与病魔斗争。Theoldmanhasstruggledwithillness.struggleforstrugglewith/against16策划：《学生双语报》16/642DrYuangrowswhatiscalledsuperhybridrice.指出从句类型，并分析句子成份17策划：《学生双语报》17/643.Thisspecialstrainofricemakesitpossibletoproduceone-thirdmoreofthecropinthesamefields.指出it使用方法好天气使我们下周出游成为可能。他不论在哪里，都把天天跑步一小时看成要求去执行。Thefineweathermakespossibleforustogoforanoutingnextweek.Whereverheis,hemakesitaruletorunforanhoureveryday.18策划：《学生双语报》18/644.Nowmorethan60%ofthericeproducedinChinaeachyearisfromthishybridstrain.指出producedinChinaeachyear作用回想morethan使用方法19策划：《学生双语报》19/645.Bornintoapoorfarmer’sfamily,DrYuangraduatedfrom….为何不用beborninto回想graduate使用方法20策划：《学生双语报》20/646.Atthattime,hungerwasadisturbingprobleminmanypartsofthecountryside.两国间争端又有了令人不安新发展。Thereisadisturbingnewdevelopmentinthedisputebetweenthetwocountries.对不起，打搅你一下，你能否告诉我这机器怎样运作吗？I’msorrytodisturbyou,butcouldyoutellmehowthismachineworks?21策划：《学生双语报》21/647.Thankstohisresearch,theUNhasmoretoolsinthebattletoridtheworldofhunger.Usinghishybridrice,farmersareproducingharvesttwiceaslargeasbefore.多亏了你们帮助，我们提前完成了任务。Thankstoyourhelpwefinishedthetaskaheadoftime.袁博士努力使世界不再饥荒。Dr.Yuantrieshardtoridtheworldoffamine.getridof摆脱，除去Hecan’tgetridofthecold.回想倍数表示22策划：《学生双语报》22/648.DrYuanisquitesatisfiedwithhislife.Makesentencesusingbesatisfiedwithsatisfy/satisfying/satisfied/satisfaction23策划：《学生双语报》23/649.Hewouldmuchratherkeeptimeforhishobbies.Makesentencesusingwouldrather24策划：《学生双语报》24/6410.Hethereforegivesmillionsofyuantoequipothersfortheirresearchinagriculture.请准备一支尖铅笔和一支一块橡皮参加考试。当今全部汽车都配置安全带。Pleaseequipyourselfwithasharppencilandarubberfortheexam.Allcarsmadenowadaysareequippedwithsafetybelts.25策划：《学生双语报》25/6411.Dr.Yuanawokefromhisdreamwiththehopeofproducingakindofricethatcouldfeedmorepeople.他天天早上都读英语，希望自己在考试中有个好成绩。HereadEnglisheverymorningwiththehope

ofagoodresultintheexamination.26策划：《学生双语报》26/64Bebornintoa….familyGraduatefromSearchforlessdevelopedcountriesCareaboutMakeitpossibletodosthCareforbesatisfiedwithwiththehopeof27策划：《学生双语报》27/64HomeworkRememberthesentences.Pre-viewtheVer-ingform(P90),finishExx.P13.youhuaP24-27.28策划：《学生双语报》28/64ChemicalOrOrganicFarming?29策划：《学生双语报》29/64Revision1.我们必须努力为过上幸福生活而奋斗。Wemuststruggleforahappylife.2.这位老人一直与病魔斗争。Theoldmanhasstruggledwithillness.3.他不论在哪里，都把天天跑步一小时看成要求去执行。Whereverheis,hemakesitaruletorunforanhoureveryday.4.两国间争端又有了令人不安新发展。Thereisadisturbingnewdevelopmentinthedisputebetweenthetwocountries.5.多亏了你们帮助，我们提前完成了任务。Thankstoyourhelpwefinishedthetaskaheadoftime.30策划：《学生双语报》30/64Evenwhenhewasayoungman,heknewhowimportantitwastoproducebiggerricecrops.Duringhisearlyyears,muchofthecountrysidewastroubledbyhunger.Astheyusehishybridrice,farmersareproducingtwiceasmuchriceasbefore.Heisnotinterestedinbuyingthingsforhimselforinhavingacomfortablelife.Itdoesnotcostanythingtodreamforsomething.Paraphrase31策划：《学生双语报》31/64Ex.3decadestruggleexpandingEquippedoutputgraincropsbattlesdisturbingEx.31stgroup:promisefailhopeaffordhopeplan2ndgroup:enjoyfinishmindmisskeep3rdgroup:trystopbeginforgetlikestart32策划：《学生双语报》32/64Ex.4toseelearninghavingtoexperimenttryingouttofindouttodeveloptofailowningsending33策划：《学生双语报》33/64Firstreading:getthemainideaofeachparagraph.para1:Anewdiscoveryofscientists.para2:Severalproblemscausedbyusingchemicalfertilizers.para3:Theadvantagesofusingorganicfarming.para4:Somemethodstokeepthesoilfertile.34策划：《学生双语报》34/641Whyarechemicalfertilizerssopopularinfarmingtoday?2Afterthelong-termuseofchemicalfertilizers,whathavescientistsfound?Manyfarmerswelcomedthemasa

greatwaytostopcropdiseaseandincreaseproduction.Long-termuseofchemicalfertilizerscancausedamagetothelandand,evenmoredangerous,topeople’shealth.Recently,however,therefore;meanwhile;anyhow;thus;otherwise;moreover;besidesetc.SecondreadingTips:theusageofseveraladverbsmeansclearandreasonableconnectionbetweenparts.35策划：《学生双语报》35/64Readparagraph2andfindouttheproblemscausedbyusingchemicalfertilizers.Therearethreeproblems.First,theycandamage…aswellas….Theyalsostayinthe…and….Inaddition,…growtoofastto….Tips:connectives（过渡词）andtransitionalphrases（过渡词）fordevelopmentfirst;second;finally;lastbutnotleast,etc.36策划：《学生双语报》36/64Readparagraph3-4

Whataretheadvantagesoforganicfarming?

Thefarmersfocusonkeepingtheirsoilrichandfreeofdiseaseandkeepingtheair,soil,waterandcropsfreefromchemicals.Tips:severalphrasescanbeused.37策划：《学生双语报》37/64Themethodstokeepthesoilfertile1usingnaturalwastefromanimalsasfertilizer.2changingthekindofcropineachfield.3plantingcropstousedifferentlevelsofsoil4

plantinggrassbetweencropstoprevent…

Thesamegoal:____________________________________________________________________________________________

togrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.Tips:infinitive”to”isusedtoexpressthepurpose38策划：《学生双语报》38/641…suchaswheatorcornthatneedrichandfertilesoil.2…plantingpeanutsthatusetheground’ssurfacefollowedbyvegetablesthatputdowndeeproots.Readthefollowingsentence,andfindwhattheyhaveincommon?Tips:clausesmakethepassagelogical（逻辑）andbeautifulNounClauses&AttributiveClauseThetwosentencesbothincludeattibutiveclause.39策划：《学生双语报》39/641.好好准备在考试那天发挥出最高水平。Buildyourselfuptopeakperformanceonthedayoftheexam.Revisionbuildup加大；加强；增多；建立40策划：《学生双语报》40/642.抽烟可能造成肺癌。Smokingcanleadtolungcancer.Makeasentenceusingleadtoleadto造成；通向=cause;resultin41策划：《学生双语报》41/64他发觉极难集中注意一件事在5分钟以上。Hefoundithardtofocusononethingforlongerthanfiveminutes.3.我们必须把精力集中在紧迫问题上。Wemustfocusourattentionontheurgentproblem.focusone’sattention/eyeson42策划：《学生双语报》42/644.戒烟会降低得心脏病危险。Givingupsmokingreducestheriskofheartdisease.企业正在努力降低开支。Thecompanyistryinghardtoreduceexpenses.这条旁道通车后，城里来往车辆就降低了。Trafficinthetownhasdroppedoffsincethebypassopened.43策划：《学生双语报》43/645.坚持体育锻炼会使你远离感冒。Constantexercisecankeepyoufreefromcold.必须制订一些可行办法预防学生作业过多。Somepracticalmeasuresmustbemadeto

keepstudentsfreefromtoomuchhomework.keep…(free)from/of…Makeasentence44策划：《学生双语报》44/64para1:Anewdiscoveryofscientists.para2:Severalproblemscausedbyusingchemicalfertilizers.para3:Theadvantagesofusingorganicfarming.para4:Somemethodstokeepthesoilfertile.ThestructureofthispassagePara1TopicPara2ProblemsPara3AdvantagesPara4Severalmethodsillustration（说明）comparisonconclusionThetypeofthearticleis_____________exposition（说明文）45策划：《学生双语报》45/64WritingWriteasummaryofthispassagefollowingtheprocedure.step1.skimthepassagetofinditsmainidea.Writeitdowninyourownwords.

Chemicalfertilizercancausemanyproblems,soorganicfarmingisbecomingmorepopular.46策划：《学生双语报》46/64Step3:writeasummary.step2:underliningandrewordingtopicsentences.Step4:Swapsummarieswithyourpartnerandgiveeachothercomments.47策划：《学生双语报》47/64Homework1.Recitetherestofthewords.2.recitethesentences（书本80页和优化30-31页）.3.做优化P27-2948策划：《学生双语报》48/64请以“PLASTICORCLOTHBAGS?”为题模仿这篇文章篇章结构和句子结构去写一篇说明文。49策划：《学生双语报》49/64DiscussionandpracticePlasticOrClothBags?illustration（说明）comparisonconclusionPara1:Para2:Para3:Para4:Haveabriefillustrationofthepresentsituation.Theproblemscausedbyusingplasticbags.Theadvanagesofusingclothbags.Conclusion.50策划：《学生双语报》50/64Thefollowingwordsmayhelpyou.Overthepasthalfcentury,…havebecomeverycommon….…welcomedthemasa…wayto….Recently,however,wehavebeenfindingthattheycancausedamageto…,even…,topeople’shealth.51策划：《学生双语报》51/64UsingStructures52策划：《学生双语报》52/64Listening:Ex.1Thepossiblebadeffectsofchemicalfertilizersonthefruitandvegetablesthatweeattoday.Ex.2TFTFT53策划：《学生双语报》53/64What’swrongwiththevegetables?Girl:Hey,Paul,listentothis…amagazinearticleaboutafarmerwhousedtoomuchchemicalfertilizeronhisfields.whenhisvegetableswerepicked,theywereallfoundtobeempty!Boy:Empty?Youarejoking,Carrie…thatcan’tbetrue!G:Ididn’tbelieveiteither!Thisarticlesaysthiscanhappensometimeswithvegetableslikecucumbers,carrotsandpumpkins.Thechemicalfertilizermakesthevegetablesgrowfasttolookbigandbeautiful,butthey’reemptyinside!54策划：《学生双语报》54/64B:Youknow,I’venoticedthatsometimesmymumbuyscarrotsfromthesupermarketthathavebigholesdownthecenter.Iguessthatmustbefromusingchemicalfertilizers!G:Yeah,that’swhatthemagazinesays!Themainpointofthearticle,though,isn’taboutholesinourvegetables.It’stalkingaboutwhythefruitandvegetablesweeattodayaren’tasnutritiousastheonesourgrandparentsate.B:What?Mymumisalwaystellingmetoeatmorevegetables,becausethey’regoodforme!55策划：《学生双语报》55/64G:Yeah,Iknow-mymothersaysthatsamething!Andit’strue-they’regoodforus…butthepeoblemisthattheyaren’thealthyenough!Allthesechemicalfertilizers-theykilloffboththebadANDthegoodthingsintheground.thegrounddoesn’thaveenoughvitaminsandmineralsanymoretohelpcropsgrowhealthy.B:So…ifourfruitandvegetablesweregrownwithchemicalfertilizers,theymightLOOKhealthy,butprobablyaren’tREALLYhealthy?Iguesswe’vegottostopusingsomanychemicalfertilizerstogrowourfood!56策划：《学生双语报》56/64Homework1.书本P49-50.2.优化unit2.3.周日早读：全部单词、短语和句子57策划：《学生双语报》57/64Workbook58策划：《学生双语报》58/64OnepossibleversionInrecentdays,scientistshavediscoveredthatusingchemicalfertilizersforalongtimecanhurtthelandandalsopeople’shealth.

Thereareseveralproblemscausedbychemicalfertilizers.Theyhurtthehealthoftheland,stayinthewaterforalongtimeandgetintopeople’sbodiesthroughtheirfood.Organicfarmingisbecomingmorepopularwithsomefarmersandmanycustomersafterthesediscoveri