高一英语下册 unit16 scientists at work(第四课时)教案 大纲人教版第一册

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1、TheFourthPeriodTeachingAims:1.Dosomereadingandknowdifferentopinionsaboutanimalexperiments.2.Dosomewritingandlearntowriteanessay.3.Reviewtheexpressionsandwordformationlearntinthisunit.TeachingImportantPoints:1.Getthestudentstounderstandthegeneralideaofthepassage.2.Trainthestudentstowriteaness

2、ay.TeachingDifficultPoints:1.Howtoimprovethestudents'readingability.2.Howtowriteanessay.TeachingMethods:1.Fastreadingtogothroughthereadingmaterial.2.Discussiontofinishthewritingtask.3.Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:1.aslideprojectorandacomputerformultime

3、diause2.ataperecorderTeachingProcedures:StepⅠ.GreetingsGreetthewholeclassasusual.StepⅡ.ResionT:Inthelastperiodwelearntsomewords,suchas,charge,cross,tie….Fromthesewords,welearnedthatoftenacertainwordcanbelongtomorethanoneclassandperformdifferentfunctions,soithasmorethanonemeaningindifferentse

4、ntences.Haveyourememberedthesewords?Let'sreviewthem.Pleaselookatthewordsonthescreen.(Showthewordsonthescreen.)GivemetheirmeaningsinChinese.charge　cross　sharp　tear　tie　conduct(Teacheraskssomestudentstodothisinoral.Meanwhile,teachertypesthemeaningsonthescreen.)chargevt.①要价；②充电vi.冲击crossvt.穿过；渡

5、过n.①十字形记号；②杂交；杂种sharpadj.①锋利的；②敏锐的；③明显的；清晰的tearvt.撕；扯n.眼泪tievt.系；拴n.①领带；②平局conductvt.①带领；②传导(热、电)；③指挥T:Welldone.Nowmakeatleastonesentencewitheachmeaningofthewords.Whocangiveusthefirstexample?S1:…T:(Teacherasksonestudenttomakeonesentence.Meanwhile,teachertypesthesentencesonthescreenandunderli

6、nesthewords.Ifnecessary,teachertranslatessomeofthemintoChinese.Sentences:1.Howmuchdoyouchargeforthebook?2.Thechildrenchargedintotheplayground.3.Isyourcellphonecharged?4.Whenyoucrossthestreet,pleasebecareful.5.Hemarkedthewronglyspeltwordwithacross.6.Thetasteisacrossbetweencoffeeandchocolate.7

7、.Theknifeissharpenoughtocutthemeat.8.Heisasharpchild.9.Thephotoissharp.10.Shetoreaholeinherdresswhensheclimbedoverthewall.11.Thelittlegirlwasintearsbecauseshe'dlosthermother.12.Thetiematchesthesuit.13.Thegameendedinatie.14.Plasticandrubberwon'tcond