北师大版高中英语选修七unit 21《human biology》（lesson3.1）word学案

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1、Unit21Lesson3学习目标Bytheendoftheclass,thestudentswillbeableto:lidentifythestructureofonetypeofdiscursiveessays.lusethestrategiesofsequencingtoputthetextbacktogether.lvoiceyourfeelingsaboutepidemics.学习过程课前准备a)completeb)datac)delayd)habite)mediaf)pillg)preve

2、nth)severei)testk)trend1.trial2.prohibit3.pause4.tendency5.acute6.statistics7.routine8.press9.tablet10.thorough课堂活动（一）预习交流Checktheanswers.（二）合作探究NameoftheepidemicsTimePlaceCauses&EffectsBirdFlu1997—worldwide,take﹥100lives500-550ADNorthAfrica,theMiddleEas

3、t,EuropeBlackDeathStartedinAsia,Europe,Africa,theMiddleEast1918SimilarastheBlackDeathSARSChina,Canada,Vietnam,SingaporeHongKong,---（三）分层提高Exercise4Page39（一）总结归纳（二）巩固反馈Finishtheexercise.