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Unit31生物维克多英语词汇教学探讨与实践【（一）认知】话题教学词汇表教学目标检查口袋本预习以及导学案完成的情况网络化复习回顾词汇、了解话题相关知识12学生：上台演示教师：总结补充StepI:主话题Brainstorm—网络化回顾词汇creaturesplantsbiologicalprotectionanimalsbiologicaltechnologyStepII:子话题词汇聚焦——深度认知目的在语境中强化记忆步骤1.子话题词汇复现输入（单句、文段）2.子话题词汇复现输出（语篇）子话题词汇复现输入Say&Guess!‘Verticalforest’tohelpclearairAsia’sfirst“verticalforest”,whichhelpsreduceairpollutionandsaveenergy,willbebuiltinNanjing,Jiangsuprovince,nextyear.Theproject,theworld’sthird,willconsistoftwotowerblocksinJiangbeiNewDistrictwhosefacades(外表)willbecoveredwith1,100treesand2,500cascading(垂落下的)plantsandshrubs(灌木).Thoseplantswillgiveoutabout60kilogramsofoxygenadayandabsorb25metrictonsofcarbondioxideayear.Whatdopandaseat?Thesimpleanswersis:bamboo.Apanda’sdailydietconsistsalmostentirelyoftheleaves,stems(茎)andshootsofvariousbamboospecies.Bamboocontainsverylittlenutritionalvaluesopandasmusteat12-38kgeverydaytomeettheirenergyneeds.Theydobranchout,withabout1%oftheirdietcomprising(包含)otherplantsandevenmeat,althoughtheyfeedalmostentirelyonbamboo.Thisrelianceonbambooleavesthemvulnerable(易受伤的)toanylossoftheirhabitat–currentlythemajorthreattotheirsurvival.Thegreynurse(沙锥齿鲨)isoneofthefiercest-lookingbutmostdocile(温顺的)marinecreatures,anddespiteitbeingdeclaredendangeredin1984anditshabitatprotected,itcoulddieoutalongAustralia’seastcoastwithin20years,scientistssay.Australiatobreedtest-tubegreynursesharksGreynurseexperiencedasharpdropinnumbersafterbeingwrongfullyblamedformanyattacksonswimmersoffSydneybeachesanditwashunteduntilthe1960s.Theendangeredgreynursesharkisitsownworstenemy.Itsyoungeateachotherinthewomb(子宫),soAustralianscientistshavearescueplantobreedthegreynursesharksintest-tubes.子话题词汇复现输出Practice&Write!学生用书P139—140综合训练:第四题【（二）讲练】PartI基础训练教学目标讲练重难点词汇，嚼透其释义、用法和搭配，以能够熟练运用。建立基本的英语概念，培养英语思维能力。12教学目录重点词释义:“熟”词“生”义:重点词块专练:absorb，sharpbranch，wing,tail,root,nest,plantcomeout，dieout,giveout,feedon,protect...from,takein重点词释义根据每个词的自身特点，释义从以下六个维度讲解：①一词多义；②熟词生义；③精准的汉语释义；④英语释义；⑤辨析义；⑥搭配义absorb吸收吸纳了解；掌握吸引；使专心缓冲“吸收”个体成为集体的一部分“吸收”某人的注意力、兴趣等“吸收”冲击以缓冲“吸收”知识、信息等并掌握基本义【教学建议】吸收totakeinandkeepheat,light,etc.insteadofreflectingitAtransparentobjectdoesn’tabsorblight.透明的物体不吸收光。2015北京改Treesabsorbthecarbondioxideintheairtoproduceoxygen.树吸收空气里的二氧化碳来制造氧气。译林⑤–2根据基本义“吸收”启发学生理解各层释义；根据所给英语释义准确理解释义，注意英语释义中的介词in,into；掌握常用词块(be)absorbedin。absorb吸纳totakesthintosthlarger,sothatitbecomespartofitThesurroundingsmalltownshavebeenabsorbedintothecity.四周的小镇已并入这座城市。理解；掌握totakesthintothemindandlearnorunderstandit近takeinabsorbnewknowledge/information掌握新知识/新信息I’vejustbeensobusystudyingandtryingtoabsorballthenewthingsaroundme.我一直忙于学习，并试图了解身边所有的新事物。北师大④–12吸引；使专心tointerestsbsomuchthattheydon’tpayattentiontootherthingsThisworkhasabsorbedhimforyears.多年来，他一直专注于这项工作。缓冲Well-designedsportsshoesshouldabsorbtheimpactonyourfeet.设计精良的运动鞋可以缓解脚部受到的冲击。►absorbedadj极感兴趣的；全神贯注的(be)absorbedin:Hewastooabsorbedinthenewspapertohearthebell.他专心读报，连门铃响都没听见。Andylayonthebed,absorbedinhisbook.安迪躺在床上，专心致志地看书。►absorbingadj吸引人的；引人入胜的【拓展】【备考指导】absorb的释义及词块(be)absorbedin考频较高；absorbed和absorbing是分词形容词，通过学生熟知的表示“感受”的一对典型词——interested和interesting来理解与记忆。同类的词还有：disappointed和disappointing；inspired和inspiring等，逐步培养学生通过结构化举一反三的能力；absorb主要在高考单选和阅读中出现，(be)absorbedin也是写作常用词块。absorb:Dark-colouredsurfaces,suchasdarksoilorforest,absorbmoreenergyandhelpwarmthesurroundingair.(2008江苏阅读)(释义)absorbed:Idon’twanttogettooabsorbedinmodeling.(2017全国语法填空)Aweakrayoflightcameinthroughasmallholeinthewallandhewasabsorbedinhisreading.(2015福建书面表达)Whendeeplyabsorbedinwork,whichheoftenwas,hewouldforgetallabouteatingorsleeping.(2012北京单选)尖的（基本义）变化突然，“尖的”急剧的；明显的敏锐的；机灵的智力或感官敏锐“尖的”sharp的语义网络言辞“尖的”尖刻的；严厉声音“尖的”突然的感觉，突出的感受“尖的”尖利的；刺耳的剧烈的；猛烈的【教学建议】锋利的；尖的sharpteeth锋利的牙齿(感观)敏锐的；(人)机灵的Shehassharpeyes.她目光敏锐。asharpchild机灵的孩子根据sharp的基本义“尖的”理解其他各层释义；根据所给英语释义准确理解释义。(言辞等)尖刻的；严厉的(ofapersonorwhattheysay)criticalorseveresharpcriticism尖锐的批评besharpwithsb对某人严厉(角度、变化等)急剧的；明显的suddenandrapid,especiallyofachangeasharpbend急转弯asharpdrop/increaseinprices价格急剧下跌/上涨剧烈的；猛烈的Ifeltasharppaininmyback.我感到背上一阵剧痛。尖厉的；刺耳的Throughallthenoisecameasharpwarningcry.噪杂中传来一声尖锐的警告声。2014重庆■adv正(指时刻)；整2o’clocksharp两点整【拓展】►sharpenvt削尖；磨快；使提高；使改进►sharplyadv急剧地；严厉地Housepriceshaverisensharplyoverthelastdecade.过去十年里房价急剧上涨。speaksharplytosb斥责某人【备考指导】sharp的释义考频较高，主要在高考阅读中出现，在单选中也有考查。Itlookslikeaverythin,sharppieceofbrokenglass.(2014湖北阅读)(释义)Farmersarekeepingtheiranimalsinsidetostopthemfromeatingash-coveredgrassorthesharpobject.(2009辽宁阅读)(释义)Italyhaswitnessedasharpincreaseinimmigrationinrecentyears.(2017浙江阅读)(释义)Assheroundedasharpbend,itsuddenlygrewcold－verycold.(2010江西完形)(释义)Theconsequence,ifthebubbles(气泡)accumulateinajoint,issharppainandabentbody.(2013江苏阅读)(释义)Shetriedhardtomove,butcouldnot,untilasharpsoundawokeher.(2011江西完形)(释义)巩固练习学生用书P137基础训练：第一题“熟”词“生”义①一词多义中的衍生义培养学生结合具体的语境由词汇的基本义推测其衍生义的能力。②“生义”与基本义联系不紧密教学侧重，需要在词汇学习时注意一些低义频的释义，特别是与基本义联系不大的释义。branch【教学建议】■n[C]树枝；枝条分部；分支；支流；支脉■vi分开；分岔Whenyoureachthelamppost,thestreetbranchesintotwo.到了路灯那里，这条街就分岔成两条路。branch的基本义是“树枝”，其动词释义由名词转化而来，根据基本义理解生义——