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新外研社19高中英语必修二Unit1Foodforthought-UsingLanguage公开课教案Teachingobjectives:.Enablestudentstounderstandthefunctionalmeaningsofmodalverbsandchooseappropriatemodalverbsaccordingtothecontext;.Leadstudentstopractisetheexercisesrelatedtomodalverbs;.Guidestudentstotalkaboutrelateddietproblemsusinggrammarproperly;.Helpstudentstoraisetheirawarenessofhealthydietanddevelopphysicalquality.Evaluationobjectives:Askstudentstofindoutthesentenceswithmodalsandtranslatethemtofindoutwhethertheycanunderstandtheirmeanings.AskstudentstodoexercisesonPagestocheckwhethertheycanknowtheusageofmodals.Askstudentstofinishtheexercisesonlearningplanpaperstocheckwhethertheyhavemasteredtheusageofmodals.Teachingkeyanddifficultpoints Leadstudentstounderstandtheideographicfunctionof“beabletohadbetterhavetodarenot^andmasterconjectureofmodalverbs.Usethemodalsproperly.Teachingmethods:CooperativeTeachingMethodTask-basedApproachCommunicativeApproach.Teachingprocedures:SteplLead-inHellolBoysandgirls.Todaywelllearnsomethingaboutmodals.Ithinkyouhavegottoknowsomethingaboutmodalsinyourlearning.Letscheckhowhowyouaregettingalongwiththisgrammar.FirstpleasefindoutallthesentenceswithmodalsinthepassageAChildofTwoCuisinesandanalyzethefunctionofthem.Activity1:FindoutthesentenceswithmodalsinthereadingpassageC.couldmanageD.canhavemanagedSuggestedanswers:即时训练1
①HemustbeanAmerican.
②Hemustbedoinghisexercisesintheclassroom.
③Hecantknowmyaddress.
④Itmusthaverainedlastnightdidntit即时训练2
①can
②couldnt
③must
④neednthave即时训练3
①一
⑥:CCCBBBStep5:Activity5:Consolidation.Fillintheblanks
①Thefirespreadthroughthehotelveryquicklybuteveryonegetout.
②Sinceitisrainingwestayindoors.
③Youfinishyourworkbeforeyougohome.
④Youworryaboutsituationsliketheseifyouhavegoodsocialskills.
⑤IknowwhatIcantalkaboutwiththeChinesepeoplethatImeet..FinishthepassageMissFangnotreadforverylongwithhereyeshurt.Hermothertoldherthatshegotohospitalandseeadoctor/Youseeadoctorassoonaspossible/hermothersaid.WhenMissFanghadfreetimeshewenttohospital.Theclerksaidthatthedoctorseeherat3:
30.MissFangrepliedthatshewouldnotbethereat3:30becauseshehaveanimportanttestthen.Sheaskedtheclerkifshearrangetheexaminationatabouttentomorrow.Suggestedanswers:.
①wasableto
②haveto
（3）hadbetter
④neednt
⑤needto.MissFangcouldnotreadforverylongwithhereyeshurt.Hermothertoldherthatsheshouldgotohospitalandseeadoctor/Youhadbetterseeadoctorassoonaspossible/hermothersaid.WhenMissFanghadfreetimeshewenttohospital.Theclerksaidthatthedoctorcouldseeherat3:
30.MissFangrepliedthatshewouldnotbeabletobethereat3:30becauseshehadtohaveanimportanttestthen.Sheaskedtheclerkifshecouldarrangetheexaminationatabouttentomorrow.Step6:Activity6:ProductionMicro-writing:假设你是汤姆的好朋友李华，最近通过电子邮件得知他在健康方面遇到了困惑请给他回复电子邮件，提出一些保持健康方面的建议要点如下.健康很重要；.保持均衡饮食和身心健康；.坚持每天锻炼的重要性注意:
1.词数80左右；.用上所学的情态动词Suggestedanswer；DearTomImsorrytohearthatyouhavetroubleinkeepinghealthy.Everyoneshouldntignorehealthwhetherheispoororwealthy.Healthisthemostimportantthing.Firstly!thinkitsnecessarythatweshouldkeepabalanceddietsowedbettereatsomefreshfruitandvegetableseveryday.Asaseniorhighstudentweshouldhavebreakfastontimeeverydayandshouldnteatmoreatnight.Atthesametimekeepingagoodstateofmindisalsoveryimportant.Weshouldkeepanoptimisticmindtoeverythingandforgettheunhappythings.Whatsmoreweshouldtakeexerciseeverydaytomakesurethatweareenergetic.Onlyinthesewayscanweliveahealthyandhappylife.Inawordkeepinghealthyeatinghabitsisbeneficialtous.Bestwishes.YoursLiHuaStep7:Activity7:SummarySuggestedanswer:WhathavewelearntthisclassLetshaveasummary.bcabletohavetohadbetterdare与need情态动词表推测L情态动词+动词原形表示对现在或将来的推测
2.情态动词+be+doing表示对某刻正在发生的动作的推测
3.情态动词+have+done表示对过去的推测，如下所示l）musthavedone过去肯定做了2）may/mighthavedone过去可能做了（小于must）3）cant/couldnthavedone过去不可能做了4）couldhavedone过去本来可以做却未做5）should/oughttohavedone本应该做却未做6）neednthavedone本不必做却做了（与didn/tneedto区别）Suggestedanswers:
①...Iwasabletoholdaknifeandfork-andchopsticks!
②ButtherearestillsomedishesthatDaddarenottryevenaftermanyyearsofmarriagetomymother....MumandIjusthavetofindawaytogethimintothekitchen!...wezdbetternoteattoomuchroastfoodasitmaymakeussufferfromheatinsideourbodies...
⑤“Youneednttryitifyoudontwantto/Mumsaid...Step2:Activity2:FillintheblanksbyusingcorrectmodalverbsT:Nowyouhavefoundoutallthesentenceswithmodals.Letshaveatrytofillintheblanksbyusingmodals.
①...Iholdaknifeandfork—andchopsticks!
②ButtherearestillsomedishesthatDadtryevenaftermanyyearsofmarriagetomymother....MumandIjustfindawaytogethimintothekitchen!...wenoteattoomuchroastfoodasitmaymakeussufferfromheatinsideourbodies...
⑤Youtryitifyoudontwantto/Mumsaid…Suggestedanswers:
①wasableto
（2）darenot
（3）haveto
（4）hadbetter
⑤needntT:NowpleasereadthesentencesinActivity2andanswerthequestions.WhataremodalverbsWhatarethecharacteristicsofmodalverbs.情态动词表示说话人的某种语气或情绪，如可能、意愿、猜测、义务、需要等.情态动词的特征:有一定的词义，但不能单独作谓语，后面接动词原形;没有人称和数的变化（haveto除外）；有些情态动词有过去式，如:can—couldmay—mightwill—woulddare—daredhaveto—hadto等.beafraidtodosomething.notbenecessarytodosomething
⑤.giveadvicetodoornottodosomething
④.benecessaryorgivestrongadvicetodosomething®.havetheabilitytodosomething
①T:Nowlet/slearnsomerelevantknowledgeaboutthisGrammar.*总结归纳:几种常见情态动词的用法Step3:Activity3:Learningofmodalverbs
一、beableto.beableto后接动词原形，表示某人有做某事的能力，与can的用法相近如:IamabletospeakEnglish.我能讲英语.beableto与can的辨析
①beableto有多种时态，如was/wereabletowill/shallbeabletohave/hasbeenableto等，而can只有两种时态，即can和could@beableto强调通过努力而获得的能力，而can则强调自身已具有的能力如ShecansingthesonginEnglish.她能用英语唱这首歌HewillbeabletosingthissonginEnglishinafewhourstoo.几小时之后，他也能用英语唱这首歌
（3）beableto强调一种结果，而can只强调一种可能如Luckilyhewasabletoescapefromthebigfireintheend.幸运的是他终于逃出了大火Ifhehadgothereafewhoursearlier!couldhavesavedhim.要是他早几小时来我还能救他
④beableto的否定形式是在be后面直接加not即benotableto;beableto可用在may/might之后如Thekidisnotabletowrite.这孩子不会写字Butwemaynotbeabletodothisforeveryscenario.但是我们不能每一种场景下都这么做即时训练:选词填空can/beableto
①Hemightfixyourcar.
②WhenIwasyoungjclimbanytreeinthewoods.
③Intoday/sinformationagethelossofdatacauseseriousproblemsforacompany.
④Fatherspentafewhourstalkingtohim.Atlasthedropthesillyidea.
二、haveto©havet和must的意义相近，只是must侧重表示说话人的主观看法，而haveto则表示客观需要，如Imuststudyhard.我必须努力学习YouhavetohandinyourcompositionsbeforenextMonday.你必须在下周一前上交你的作文
②haveto的否定形式是donthaveto相当于neednt如Theydonthavetobuyacomputeratpresent.他们目前没有必要买电脑
③haveto有人称、数和时态的变化，如Theyhadtospeedup/ortheweatherturnedterrible.他们必须加快速度，因为天气变糟了Hehastostayathomebecauseofillness.因为生病他不得不待在家里*must表示义务、必要性、命令等，意为“必须，应该〃，更强调主观态度must用于一般疑问句时，其肯定答语应用Yesyoumust.其否定答语应用“Noyouneednt.或Noyoudonthaveto.must的否定式为mustnot/mustnt表示禁止即时训练:完成句子
①IherebecauseIhavenoumbrellawithme.我不得不在这儿等，因为我没带伞
②Yousmokehere.这儿禁止吸烟
③Wehurryfortheresplentyoftime.我们不必着急，因为时间很充裕
④Wehomeby11oclock.我们必须在11点以前到家
三、hadbetterhadbetter后跟动词原形，表示最好......〃，其否定式在hadbetter后加not构成疑问句时，则通常将had（而不是hadbetter）置于主语之前即时训练:翻译句子
①你最好别去打扰他
②我们最好在天黑前到达那里
③你最好在10点前完成你的家庭作业
④医生是不是去看看他比较好？
四、dareneedl.dare既可作情态动词，又可作实义动词作情态动词时，通常用于否定句、疑问句和条件状语从句中，一般不用在肯定句中即时训练1完成句子
①Shegooutaloneatnight.她晚上不敢独自出门
②Howshedothingslikethattome她怎么敢对我做那样的事呢？
③HeaskedmeifIrideahorse.他问我是否敢骑马dare作实义动词时，有时态、人称和数的变化不同的是作实义动词时，在肯定句中dare后面通常接带to的不定式;在否定句和疑问句中dare后可接带to或不带to的不定式即时训练2:完成句子
①HespeakEnglishatanytime.任何时候他都敢说英语
②Iwonderhowhesaysuchthings.我纳闷他怎么竟敢说出这样的话来
③Heanswer.他不敢回答
④Howyougointothelabwithoutyourteacherspermission未经你老师允许你怎么敢进实验室？
2.need作情态动词时，后跟动词原形，表示〃需要，有必要〃，无人称和数的变化多用于否定句、疑问句或条件句中2018•全国卷团Ifyouaretimepooryouneedrunforonlyhalfthetimetogetthesamebenefitsasothersports.如果你时间不充裕你只需要跑一半的时间就可以获得和其他运动同样的效果need作为实义动词时通常用法是1A+need+todo⑵物+need+doing⑶物+need+tobedone注意对need问句的回答—NeedIfinishtheworktoday—Yesyoumust./Noyouneednt/No^oudonthaveto.Neednt对其他情态动词问句的回答—ShallItellJohnaboutit—Noyouneedn/t/don/thaveto.—Mustwedoitnow—Noyouneednt/donthaveto.即时训练3:完成句子
①Wegetenoughhelp.我们需要大量的帮助
②Theroomneedscleaning.Theroomcleaned.房间需要打扫了
③nowarebooks.他现在需要的是书籍
④Heaboutit.这件事他无须担心Suggestedanswers:
一、
①beableto
②could
（3）can
（4）wasableto
二、
①havetowait
②mustnt
③donthaveto
（4）mustbe
三、
①You，dbetternotdisturbhim.
②Wehadbettergettherebeforeitgetsdark.
③Youdbetterfinishyourhomeworkbefore10oclock.
④Hadn/tthedoctorbetterseehim
四、即时训练1
①darenot
②dare
③dare即时训练2
①daresto@dares（to）
（3）doesnotdare（to）
④dare即时训练3
①needto©needstobe
（3）Whatheneeds
④needntworryStep4:Activity4:Conjectureofmodalverbs.can用于肯定句中表示客观的可能性，意为“有时会〃;用于疑问句中可以表示推测，意为“可能〃，有时表示一种惊讶的语气;用于否定句中也可以表示推测can、意为“不可能〃，语气很强烈.may/might用于肯定句中可以用来表示不十分肯定的推测，意为〃有可能〃;用于否定句中也可以表示推测maynot意为〃可能不〃，表示一种不太确定的语气.must表示推测时只能用于肯定句中，意为〃一定，必定〃，表示十分肯定的语气（在疑问句中或否定句中要用can/could）o.should用来表示推测时意为“应该〃，即含有〃按道理来说应当如此〃的意思情态动词+动词原形表示对现在或将来的推测情态动词+be+doing表示对某刻正在发生的动作的推测“情态动词+havedone〃的用法情态动词+havedone用法一定做过某事，其否定形式为canVcouldnthavemusthavedonedone.本来能够做某事却未做can/couldhavedone.可能做过某事Canzt/couldnzthave不可能做过某事donemay/mighthave或许/可能做过某事doneshould/oughtto本该做某事却未做，其否定形式表示本不该做某事havedone却做了Neednthavedone做了本没有必要做的事情即时训练1:翻译句子
①他准是个美国人
②他肯定正在教室里做练习
③他不可能知道我的地址
④昨晚一定下雨了，是不是即时训练2:单句语法填空
①Youdbetterputonaheavycoat.Sometimesitbeverycoldhereatnight.
②Itbethevocabularythatcausedyoutheproblemintheexercisebecauseyouknowalotofwords.
（3）—Goodmorning.IvegotanappointmentwithMissSmithinthePersonnelDepartment.一Ahgoodmorning.YoubeMrs.Peters.
④Youhavehurried.Ihavelotsoftime.即时训练3:单项填空
①一Shelooksveryhappy.Shehavepassedtheexam.—Iguessso.It/snotdifficultafterall.A.shouldB.couldC.mustD.might
②一HowsyourtouraroundtheNorthLakeIsitbeautiful—Itbebutitisnowheavilypolluted.A.willB.wouldC.shouldD.must
③Therebeanydifficultyaboutpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.A.mustntB.shantC.shouldntD.neednt
④Youbehungryalready.Youhadlunchonlytwohoursago!A.wouldntB.cantC.mustntD.neednt
（5）—Kmsorry.Iatyoutheotherday.—Forgetit.Iwasabitoutofcontrolmyself.A.shouldntshoutB.shouldnthaveshoutedC.mustntshout
0.mustnthaveshouted
⑥ThankyouforallyourhardworklastnightIdontthinkweitwithoutyou.A.canmanageB.couldhavemanaged。
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