北师大版高中英语选修七unit 21《human biology》（lesson1.1）word学案

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1、Unit21warmup学习目标Bytheendoftheclass,thestudentswillbeableto:nlearnandrevisethewordsrelatedtothetopic.ngetthegeneralideaofthetextandthewriter’viewpoints.n学习过程课堂活动（一）预习交流.Wordbank.MatchthewordswiththeirChinesemeanings.intervaln.听觉digestn.间隔；间歇swapn.脉搏hearingvt.消化pulsevi.交换Matchthewordswiththeirmea

2、nings.enhanceincreasesupremestand;beartoleratehighest,greatestdoubtfulyearlyseekdonotbelieve,suspiciousannuallookfor（二）合作探究Readthetextagain,matchthekeyinformationwitheachpart.Partone.(1-2)DopingPartone.(3-6)RecordshavefallenPartone.(7)OlympicspiritPartone.(8)Gene-therapy（三）分层提高(1).1.Showthewrit

3、er’sattitudetowardsthedrugsandgene-therapy.Youmayrefertothefollowingwordsandexpressionsorthetext.comeacrosstheissue,drug,curedisease;inthewronghands,abuse,toleratedoping;gene-therapy,bigthreat,oppose;violatetheOlympicspirit,takingpartratherthanwinning(2).Useyourownwordstoshowthewriter’sviewpoin

4、ts.Example:A:Whichchampionathletecanrun100metresin8seconds?B:Idon’tknow.Butwecomeacrosstheissue-enhancingdrugs.Thesedrugsaredevelopedtohelppeoplewithillnesses,butinthewronghands,theycreate“supremeathletes”.A:Takingthesedrugsisknownas“doping”,theycauseproblemsforthosewhoabusethem.B:Thesportsworl

5、ddoesnottoleratedopingasitisafundamentalformofcheating.A:Yes.“Gene-therapy”willbethenextbigthreat.Itiscontroversialandmanypeopleopposefurtherresearchintoit.B:Iagree.Bothdopingandgene-therapyviolatetheOlympicspirit.Thespiritofcompetition-higher,faster,stronger-emphasisestakingpartratherthanwinni

6、ng.That’swhythousandsofpeoplearecrazyabouttheirheroandthegreatOlympic!（一）总结归纳（二）巩固反馈WordsCompletetheexercise.