TheFourthPeriodTeachingAims:1.Dosomereadingandknowdifferentopinionsaboutanimalexperiments.2.Dosomewritingandlearntowriteanessay.3.Reviewtheexpressionsandwordformationlearntinthisunit.TeachingImportantPoints:1.Getthestudentstounderstandthegeneralideaofthepassage.2.Trainthestudentstowriteanessay.TeachingDifficultPoints:1.Howtoimprovethestudents'readingability.2.Howtowriteanessay.TeachingMethods:1.Fastreadingtogothroughthereadingmaterial.2.Discussiontofinishthewritingtask.3.Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:1.aslideprojectorandacomputerformultimediause2.ataperecorderTeachingProcedures:StepⅠ.GreetingsGreetthewholeclassasusual.StepⅡ.ResionT:Inthelastperiodwelearntsomewords,suchas,charge,cross,tie….Fromthesewords,welearnedthatoftenacertainwordcanbelongtomorethanoneclassandperformdifferentfunctions,soithasmorethanonemeaningindifferentsentences.Haveyourememberedthesewords?Let'sreviewthem.Pleaselookatthewordsonthescreen.(Showthewordsonthescreen.)GivemetheirmeaningsinChinese.chargecrosssharpteartieconduct(Teacheraskssomestudentstodothisinoral.Meanwhile,teachertypesthemeaningsonthescreen.)chargevt.①要价；②充电vi.冲击crossvt.穿过；渡过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,teachertypesthesentencesonthescreenandunderlinesthewords.Ifnecessary,teachertranslatessomeofthemintoChinese.用心爱心专心1Sentences:1.Howmuchdoyouchargeforthebook?2.Thechildrenchargedintotheplayground.3.Isyourcellphonecharged?4.Whenyoucrossthestreet,pleasebecareful.5.Hemarkedthewronglyspeltwordwithacross.6.Thetasteisacrossbetweencoffeeandchocolate.7.Theknifeissharpenoughtocutthemeat.8.Heisasharpchild.9.Thephotoissharp.10.Shetoreaholeinherdresswhensheclimbedoverthewall.11.Thelittlegirlwasintearsbecauseshe'dlosthermother.12.Thetiematchesthesuit.13.Thegameendedinatie.14.Plasticandrubberwon'tconductelectricity,butcopperwill.15.Theguideconductedusaroundthecity.16.Thefamousconductorconductedtheconcert.StepⅢ.ReadingT:Nowadaysscienceandtechnologyisdevelopingfastinmanyfieldsespeciallyinmedicine.Scientistskeepdevelopingnewmedicinestotreatallkindsofdiseases,whichwerehardtocureinthepast.Afteranewmedicineisdeveloped,itmustbetestedonanimalsbeforeweuseit.Doyouknowthis?Ss:No.T:Thisisveryimportant.Almosteverymedicineweusehasbeentestedonanimals.Everyyearmanyanimalsdieinexperimentstodevelopandtestnewmedicine.Doyouthinkit'sfairforhumanstodothis?Todaywe'llreadapassageaboutanimalexperiment.Beforereading,wefirstlearnsomenewwordsandoneexpression.Lookatthescreen.Newwords:shampoon.洗发精drugn.药doubtn.怀疑；疑惑activistn.激进主义分子；行动主义分子pron.赞成contran.反对；相反conclusionn.结束；结论concludevi.得出结论testn.&v.测试；试验teston…(Teacherasksstudentstoreadthenewwordsseveraltimesandtrytorememberthem.)T:NowopenyourbooksonPage20andreadthepassagequicklyandanswerthequestionsonthescreen.用心爱心专心2(Showthequestionsonthescreen.)1.Whydoscientistsuseanimalsforsuchexperiments?2.Whydosomescientistssaythatanimaltestingdoesn'twork?3.Whydosomepeoplesayhumanshavenorighttouseanimalstotestmedicines?(Teachergivesstudentsenoughtimetoreadthepas...
