高中英语unit3revision课件新人教版必修 22页

unit3Lifeinthefuturerevision\nStep1:复习导入(知识框架)(10分钟)\n重点单词重点短语重点句式语法impression,previous,guide,lack,switch,optimistic,desert,instant,settlement1.takeup2.losesightof3.sweepup4.slideinto5.speedup1.Itseems(that)……2.全倒装句式insidewasanexhibitionof…...动词过去分词做状语\n1．impressionn.印象；感想；印记impressvt.使感动，使留下印象impressiveadj.给人深刻印象的haveanimpressionof对……有印象beundertheimpressionthat...认为……；以为……makeanimpressionon给……留下印象impresssth.on/uponsb.使某人铭记某事物impresssb.withsth.使某人铭记某事物beimpressedby/at/with对……印象深刻2．previousadj.以前的；早先的previousto...在……前；先于……(to为介词)previouslyadv.先前地；以前地3．guiden．向导，指南，指导，导游，有指导意义的事物vt.指导，管理，带领aguideto...……的指南guidepost路标guidesb.through/across带领某人穿越……单词详解\n4．instantn．瞬间，刹那adj.立即的，立刻的ininstantneedofhelp急需救助inaninstant立刻；马上表“一……就……”的有：theminute/moment/second/instant,assoonas，instantly,immediately,directly5.lackv．&n．　缺乏；短缺的东西(1)v.(2)n.(3)lackingadj.短缺的；缺乏的belackingin缺少\n6.switchvt.转换n．　开关；转换(1)switchon接上；打开switchto变换到switchoff切断；关掉(2)makeaswitch进行改变\n1．takeup占去(时间/空间)；开始学习；从事……；继续；接受；拿起；改短(衣服)；加入takeoff脱(衣服)；起飞；成名takein吸入；领会；包含；收留(某人)takeaway解除；消除(痛苦等)takeback收回(说过的话)；退回(货物)；与……重归于好，使回忆起takedown(＝writedown,notedown)写下；拆除takeapart拆开takeover接管，接收2．losesightof看不见atthesightof...在看到……时catchsightof...望见，看到……in/withinsight在视线内，可以被看见insightof...可以看见……outofsight看不见了，不被人看见短语\n3.speedup加速athigh/low/full/topspeed以高/低/全/最高速ataspeedof...以……速度withallspeed尽快地reducespeed减速pickupspeed加速\n句式1.Thereissimilartothe“jetlag”yougetfromflying,butitseemsyoukeepgettingflashbacksfromyourprevioustimeperiod这就与你乘坐飞机会产生时差反应相似，但是在你脑子里似乎会不断闪现以前的时光。2．Exhausted,Islidintobedandfellfastasleep.我感到累极了，爬上床很快就睡着了。exhausted为形容词在句中做伴随状语。3.Hitbyalackoffreshair，myheadached.由于缺乏新鲜空气，我感到头痛。过去分词作状语时，若其逻辑主语是句子的主语，则与句中主语含有逻辑上的被动关系。4.Insidewasanexhibitionofthemostup-to-dateinventionsofthe31stcentury.在太空里有第31世纪最新发明展完全倒装\nStep2：课堂训练&疑难点拨(18分钟)\nP56onthebookAnswerkeyforEx1:1.lostsightof2.catchsightof3.caughtsightof4.lostsightofAnswerkeyforEx2:typist,capsule,representative,impression,efficiency,motivation,instant,switch,flash,manufactured,materials,settlements\n.AnswerkeyforEx3:1.Thisparcelofbooksis250yuanincludingpostageandpacking.Pleasewritedownthereceiver’saddressanddon'tforgetthepostcode.2.Decadesago,peopleusedtypewritersforformaldocuments,butnowweusecomputersandprinterstodothesamework3. Althoughithasalongshelflife,instantcoffeemaygosolidifitisnotkeptdry.4.Onethousandyearsinthefuture,citizensoftheearthmaybeabletodisposeoftheirrubbishusinganecologicalsystem.5.Thesnakewassogreedythatitswalloweduptheratinonebite.\n6. Dealingwithpeopleisoneimportantaspectofabusinessman’swork.7. Whenwecamehomefromourwalkacrossthefieldswehadmudalloveroutboors.8. Aftersixweeksinhospital,hewasbackonhisfeetandreadytostartwork.\nP57AnswerkeyforEx1:1.Well-knownforhisbooksaboutSouthAfrica,JMCoetzeewontheBookerPrize.2.Aprincessonceownedamagicalchairmadeofgoldandsilver.3.Onhisbirthdayhereceivedamysteriouspresentwrappedingoldpaper.4.Interruptedbythebell,hewasunabletofinishhisspeech.5.Awakenedbyanoiseatmidnight,shesawathiefinherroom.6.Seated,passangersshouldfastenyourseatbelts.AnswerkeyforEx2:called;Endangered;pointed;known;fallen;supported;terrified\nStep３：问题探究(学生讨论)7分钟\nas引导的状语从句有哪些，各有什么含义？as有conj.，prep.，adv.，pron.等词性，作为连词可引导五种状语从句，即时间状语从句、原因状语从句、方式状语从句、让步状语从句以及比较状语从句。(1)引导时间状语从句要区分when，while，as等连词的用法when：句子谓语既可为时间点(即终止动作)，也可为时间段(即延续动作)。while：句子谓语为延续动作，往往表示“一个动作发生时，另一个动作正在发生”。as：常表示“一边做……，一边做……”，也有“随着……”等义。(2)引导原因状语从句要区分because，since，as的用法because：常回答why的问句，语气强，用法正式。since：有“既然”之意，与as一样，引导的从句常位于句首\n(3)引导方式状语从句同justas(语气更强)，意为“正如，照……方法”。(4)引导让步状语从句①要用倒装语序，即：n./adj./adv./v.p.p＋as/though＋主语＋谓语。名词表语提前用单数且无冠词。②用法同though(不用although)。(5)引导比较状语从句常构成as...as结构，第二个as为连词或介词。\n完成句子(1)____________________(随着时间的推移)，thingsseemedtogetworse.(2)__________________(由于我们俩都累了)，let’sjustgrabatakeaway.(3)__________________________________(我们最好保持现场原样)untilthepolicearrive.(4)__________(尽管她是个孩子)，Susanknowsalot.(5)Ican’trun________________(像过去那样快)．AstimepassedAswe’rebothtiredWe’dbetterleavethingsastheyareChildassheisasfastasIusedto\nStep４：课堂提升（9分钟）\n1.ThemanagerlikeMarryverymuchbecausethe___________sheleftonthemanagerwasquitegoodA.guideB.adjustmentC.impressionD.motivaton2.Afterheretiredfromoffice,Roger__paintingforawhile,butsoonlostinterest．A．tookupB．savedupC．keptupD．drewup3.Beautyisfoundeverywhere.Oureyesdonotshow___________senseofbeauty,but_____________observation.A.alackof;alackofB.lackof;lackinginC.nolackof;nolackinC.alackfor;alackfor\n4.Nomatterhowfrequently______,theworksofBeethovenstillattractpeopleallovertheworld.A.performedB.performingC.tobeperformedD.beingperformed5.Itwassuchaseriousmistake,_____causedbycarelessness.A.whichIthinkwasB.whatIthinkitwasC.IthinkwhichwasD.Ithinkwhatitwas文\nHomework（1分钟）1.整理本单元的笔记，卷子。2.预习unit3单词并抄写黑体字单词三遍