Unit21HumanBiologyLesson3Teachingaims1.wordsandphrases：2.languagepointsinthetext3.readingstrategies4.exercisesabouttext5.vocabulary:synonymsTeachingtimeTwoperiods(两课时连堂)TeachingprocessStep1Revisionhaveadictionaboutthenewwordsinlesson2Step2learnthenewwordsoflesson31.asksomestudentstoreadthenewwordsfirstandcorrecttheirpronunciation2.playthetapeandhavethemreadafterthetape用心爱心专心3.givethemafewminutestoreadthenewwordsfreely,tellthemiftheycan’treadthewords,encouragethemtoasktheteacher.step3reading1.askstudentsreadthekeywordsinexercise1andguesstheirmeaning.2.letthemdiscussinpairswhichofthesediseasescanbeorareepidemics2.doexercise2bythemselvesinpairs.thenchecktheiranswersonpage1033.letthestudentsreadReadingStrategies.4.studentsthenreadquicklythroughthetexttogetageneralideaofit.5.studentscompletethetextwiththemissingparagraphs.6.checktheiranswersbyhavingindividualsreadoutthecompletetext.7.givestudentsafewminutestodoexercise4.step4languagepoints1.epidemicsexplained用心爱心专心2.epidemicsthroughouthistory3.withnewhealththreatsontherise.4.lookat5.sincethebeginningoflifeonearth6.aslongas7.asearlyas430BC8.onrecord9.beattempttodosth.10.sweepthrough11.diefromthedisease12.beknownas13.alackof14.providetheperfectconditionsfor..15.inhighlypopulatedareasalloverEurope16.onehalftolnethirdofthepopulationwaslosttotheBlackDeath17.itisbelievedtobe…用心爱心专心18.dieofthefludieinthewar19.beginwith,endwith20.thenumberof21.suchas22.naturaldefences23.beharmfulto24.makeup25.expandacrossstep5vocabulary:synonyms1.exercise6a)askthestudentstodotheexerciseindividually.b)thenchecktheiranswers2.exercise7.a)asksomestudentstocometotheblackboardtodotheexerciseb)checktheiranswers用心爱心专心step6Homeworkcopythenewwords用心爱心专心
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