高一英语（下）必修四Unit 2课时教案Period 7

单位：湖北省荆门姓名：李国E_mail：liguo619@Period7:Listeningtask&AssessmentGoals:Listeningpracticetoimprovethestudents’listeningability.Discusshowtoincreasetheoutputofcrops.Assessmentandaquiztohelpthestudentsmakeaselfassessment.Teachingprocedures:Step1RevisionCheckthehomeworkexercises.Step2Thinking1.Chinaisalargecountrywithalargepopulation,soit’snecessarytosolvetheproblemoffood.Howcanweincreasetheoutputofcrops?Asascientist,IshouldAsanexpert(专家)offarming,IshouldAsafarming,IshouldAsamemberofourcountry,IshouldAnswers:1).inventgoodfertilizerthatcanmakecropgrowfastandincrease2).givelecturestofarmersonhowtousescienceandtechnologytogrowcrop3).trytogeteducatedsothatIcanmakeagriculturemodernized4).trymybesttoprotecttheenvironmentandfarmland(Givethestudentstheanswers,usingthepicturesofPPT1asexamples.)2.Isthereenoughlandforpeopletogrowcrops?Ifnot,whatshouldwedo?Answer:Ontheonehand,weshouldincreasetheoutputofcrop;ontheotherhand,wecanturndesertintofarmlandbyplantingtreestokeepwatercycle.Step3Pre-listeningLengJianliandherhusbandhavebeenplantingtreesinthedesert.Doyouknowwhy?Andwhat’stheresult?Step4ListeningLetthestudentslistenandfinishtheexercisesbelow.1.Putthesestagesofturningfertilelandintoadesertinorder.Fertilefarmland.(1)Landbecomesdry.()Soilisblownaway.()Notenoughwater.()Plantsdie. ()Soilturnstosand.()Answer:Fertilefarmland.(1)Landbecomesdry.(3)Soilisblownaway.(5)Notenoughwater.(2)Plantsdie. (4)Soilturnstosand.(6)2.Answerthesequestions.1).Whydoweneedtogrowplantstokeepourfarmlandfertile?ATheystopthesoilblowingaway.BTheymakethesoilbrown.CTheykeepthewaterintheground.D.Theylookpretty.2)HowdoweknowthatthedesertinNorthAfricausedtobefarmland?AItlooksasifitusedtogrowcrops.BThereusedtobelotsofrain.CThereusedtobealakethere.DItproducedwheatinthefirstcenturyAD.3)HowdoesLengJianliturnthedesertbackintodesert?ASheletsanimalsliveinthedesert.BShewatersthesand.CSheplantstreesinthesand.DSheputsmoresoilonthedesert.Answer:1.AC2.D3.C3.DiscussionWhatadvantagesdoyouthinkthereareinturningdesertbackintofarmland?Answer:Firstly,thereismorelandthatcanbeusedtogrowfood;secondly,thedesertcanbestoppedfromexpanding.Step5Assessment&QuizI.Tickthestatementaccordingtowhatyoudoorthink.Icaneasilynametenkindsofagriculturalproduction.2.Ihavevisitedthecountrysideseveraltimes.3.Icanclearlytelltheadvantagesoforganicfarmingandthedisadvantagesofthechemicalfertilizer.4.Ithinkeveryoneshouldknowsomethingaboutfarmingandtheimportanceofthegreenfood.5.IbelievethefarminginChinawillbedevelopedbetterandbetter.II.Wordspelling1.H_____isoneofthebiggestproblemsindevelopingcountries.2.Theo_____ofgrainhasdoubledinChinainthelasttenyears.3.Heenjoysplayingthev_____whilehisbrotherlikessinging.4.Areyous______withyourexamresult?5.N_____fertilizersarebetterthannaturalones.6.TheAmericanpeople________(斗争)togetindependencefromBritain.7.Middleschoolstudentsarenotallowedtodrive__________(摩托车).8.Hisskinisblackbecausehegot_______(日晒)inhisholiday.9.Chinaisrichin______(矿产)resources.10.Itis______(肯定)thathetheweatheristurningwarmer.Answer:1.Hunger2.output3.violin4.satisfied5.Natural6.struggled7.motorcycles8.sunburnt9.mineral10.certainIII.Rewritethesentencesinanotherway.1.Idon’tlikeplayingfootball.ButIlikeplayingbasketball.I_____playingbasketball_____playingfootball.2.Itisnecessaryformetobuyanewbike._____________________isnecessary.3.Thenewbuildingis200metreshigh.Theoldbuildingwasonly50metreshigh.Thenewbuildingis_____________________astheoldbuilding.4.Bobawokefromhisdreamwiththehopethathecanbuyanewcar.Bobawokefromhisdreamwiththehopeof______________.5.Benwentclosertothepaintinginordertoseeitclearly.Benwentclosertothepainting___________________hecouldseeitclearly.Answers:1.prefer…to2.Buyinganewbikeforme3.fourtimesashigh4.buyinganewcar5.inorderthat/sothatIV.Completethefollowingsentenceswiththerightformofthegivenphrases.wouldrather,besatisfiedwith,thanksto,insiston,careabout,referto,ridof,leada...life,exchangefor1.Hegotthefirstprizeinthespeechcontest.Histeacher______________hisperformance.2.Itisreallyahotday.I__________stayinthehousewithair-conditioningthangooutshopping.3.Please________thelastpageofthebookforanswersafterdoingtheexercises.4._________yourhelp,wecouldfinishthetaskontime.5.Mostofthepeopleinremotemountainousarea_________________poor_______.6.NextweekIwillflytoBritainonbusiness.NowIwantto________someRMByuan__________Britishpounds.7.Whenachildknowsthathe_____________,hefeelssafeandsecure.8.Thegirlstruggledto__________herself_________herfears.9.Someschools_________theirstudentswearingschooluniforms.Answers:1.wassatisfiedwith2.wouldrather3.referto4.Thanksto5.leada...life6.exchangefor7.iscaredabout8.ridof9.insistonV.Choosethebestanswers.Allcarsmadenowadaysare_____withsafetybelts.A.prepared B.packed C.builtinD.equipped2.Iamnot_______withyourwork.Youmustimproveit.A.satisfactory B.satisfying C.satisfiedD.asatisfaction3.Shallwegoskatingorstayathome?Which________do?A.wouldyourather B.doyouratherC.willyourather D.shouldyourather4.Whatworriedthechildmostwas_______tovisitthenewmuseum.A.hisnotallowing B.hisnotbeingallowingC.hisbeingallowed D.havingnotbeenallowed5.Itwassocoldthattheykeptthefire________allnight.A.toburn B.burn C.burningD.burned6.Doyouknowtheboy_______underthebigtree?A.lay B.lain C.laying D.lying7.________areply,hedecidedtowriteagain.A.NotreceivingB.ReceivingnotC.Nothavingreceived D.Havingnotreceived8.________sureoftheword,helookeditupinthedictionary.A.NotbeingB.NothavingbeenC.BeingnotD.Nottobe9.Iconsidered_______myjob,butintheendIdecided_______.A.tochange,todonotB.changing,nottoC.changing,nottochangeD.tochange,notto10.Astimewenton,thetheoryshehadstuckto_______correct.A.provedB.provingC.beprovedD.prove11.__________pityonthesnakeledtohisowndeath.A.Thefarmertotake