北师大版高中英语选修七unit 21《human biology》（lesson3.2）word学案

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1、Unit21Lesson3学习目标Bytheendoftheclass,thestudentswillbeableto:lidentifythestructureofonetypeofdiscursiveessays.lusethestrategiesofsequencingtoputthetextbacktogether.lvoiceyourfeelingsaboutepidemics.学习过程课堂活动（一）预习交流Talkaboutepidemics.（二）合作探究Readthetextagainandfillinthemissin

2、ginformationbasedonthetext.Fivekiller1.____________aretalkedaboutinthetext.TheyareJustinianPlague，2._______________,3.______________,SARSand4.____________.JustinianPlague,theearliest5.___________about500-550ADwhentheRoman6._________wasattemptingto7.____________theRomanEm

3、pire.Thisepidemic8._________throughNorthAfrica,theMiddleEastandEurope.Itissupposedto9.__________upto50%ofthearea’spopulationandthusledtothefallof10.__________________.TheSARSepidemicappearedin2002,asitwascompletelynew,therewereno10___________drugsor11.______________totre

4、atitanddoctorswerenotsurehowtopreventiteither.However,eversincethen,12.__________havebeendoneon13._____________toprohibitanyfurther14.__________.Thankstomoderntechnology,medicalworkersallovertheworldareabletoworktogetherwithoutpausetohelpputSARS15._________us.（三）分层提高Howd

5、oyouunderstandthewordsorphrasesinboldletters?Pleaseparaphrasethesentences.1.UptoonehalfofthepopulationwaslosttotheBlackDeath.upto:losesthtosth/sb:___________________________________________________________________2.Meanwhile,governmentsworldwidehavealsounderlinedthefactt

6、hatthoroughandsystematicmedicalresearchonBirdFluneedstoleadtoacureassoonaspossible.Meanwhile:Underline___________________________________________________________________（四）总结归纳（一）巩固反馈Finishtheexercise.