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previousto…在…之前的adjust…to调节以适应…1.lackv.&n.缺乏，没有lacksth.缺乏某物(lack作vt.不用于被动语态)lackforsth缺乏(lack作vi.常用于lackfornothing)alackofsth.缺乏某物(lack作n.)belackingin缺乏(lacking作adj.)=beshortoffor/throughlackof因缺乏…(1)Duringthewartherewasaseriouslackoffood.Itwasnotunusualthateventhewealthyfamilieshadtodowithoutbreadfordays.(2009·湖北，22)在战争期间，存在严重的食物缺乏问题。这种情况并不少见，就连富裕的家庭也会好几天没有面包只得将就度日。(2)_______vitaminBcanproduceavarietyofsymptoms.（lack）缺少维生素B会引发多种症状。(3)Hisparentsmadesurethathe_______________nothing.(lack)他的父母确保他什么都不缺。Lackinglacked(for)(4)Theplantdiedfor__________water.植物因缺水而枯死了。lackof2．instantadj.立即的，立刻的n．[C](一般用单数)瞬间，片刻；某一时刻inaninstant＝立刻，马上theinstant＝themoment/theminute＋从句instantly/immediately/directly＋从句(1)，hetookoffhiscoatandjumpedintothewater.(2010·陕西，阅读理解)他马上脱掉衣服跳进了水里。instantimmediatelyassoonasInaninstant(2)Wecan’tpromiseinstantsolutions，butwecanpromisetolisten.我们不能保证立刻给予解决，但保证能认真听取意见。(3)Wouldyouliketohavesomeinstantcoffee?你想喝一些速溶咖啡吗？(4)hecamein，Irecognizedhim.他一进来，我就认出他来。写作句组——满分作文之佳句a．LiYueandZhangHuacarriedoutthevolunteeractivitytheinstanttheyarrived.(2009·浙江)b．Westartedtoworkthemomentwearrived.(2009·北京)c．Youareexpectedtocallherbackassoonasyoucomebackhome.(2009·全国Ⅰ)Theinstant3．switchn.&v．开关；转换；改变；交换makeaswitch进行改变switch接上；打开switch____切断；关掉switch...变换到……注意：表示“打开；切断电源、开关”等意义时，switchon/off可以与turnon/off互换。ontooff(1)Accordingtotheairtrafficrules，youshouldswitchoffyourmobilephonebeforeboarding.(2008·上海，29)根据空中交通规则，在登机前你应当关闭手机。(2)whenyou’vefinishedusingtheelectrictypewriter.电动打字机用完后，要关掉开关。(3)Therehasbeenaswitchinourplans.我们的计划有变。Switchoff4.guiden.指导；向导；导游;vt.指引；指导_________withone’sguidance在……的指导下guidetosth.(旅行，游览等）指南，手册guidesb.to…引导，带某人去…guidance(1)一个当地农民带我们穿过这片森林。(guide)Alocalfarmer________________________.(2)在导游的指引下，我们观光了这个小镇。(guide)___________________，wehadatourtothesmalltown.guidedusthroughtheforestGuidedbytheguiden.指导；咨询5.desertn.沙漠；荒漠vt.抛弃;遗弃注意：拼写相似的词dessert(饭后的甜点心)运用：理解下列句子中desert的词性和词义。⑴Somerichhusbandsoftendeserttheirwives.⑵Ifyougotothecountryside，youwillfindtherearealotofdesertedhouses.⑶OnceanArabwastravellinginthedesertonhiscamel.n.沙漠vt.抛弃adj.废弃的1.takeup拿起；开始从事；对……发生兴趣；占据（时间，空间等）运用：根据汉语意思完成英文句子。⑴用QQ在网上聊天占用太多的时间，而且很无聊。UsingQQtochatonline____________________andit’sveryboring.⑵安娜在小时侯对绘画产生了兴趣。Anna_____________________inherchildhood.takesuptoomuchtimetookupdrawing⑶你打算接受这份工作吗？Areyougoingto________________?⑷我不想把钢琴放在这里，因为它占了太多的空间。Idon’twantthepianotobesethere，justbecauseit________________________.takesuptoomuchroomtakeupthejob拓展takein吸收，接纳；领会；欺骗take呈现；雇用；承担；从事take接收，接管；承袭takeplace发生；进行taketheplaceof代替take...account/consideration把……考虑进去；考虑到onoverinto用sight的相关短语完成句子。1.Themothersawoffhersonuntilhewas________________.2.Hestoppedhiscarsuddenly________________adoginthemiddleoftheroad.3.Afterhavingfollowedthethiefforhalfanhour,they______________himinalargestore.4._______________theirheadteachercoming,thestudentsfellsilenceinaflash.(catch)outofsightatthesightoflostsightofCatchingsightof3．speedup加速；加快high/low/full/topspeed以高/低/全/最高速ataspeedof...以……速度speed加速(1)Wemustspeedupthepaceofoureconomicreform.我们必须加快经济改革的步伐。(2)Thepolicecarisrunning100milesperhourtochaseafterthetruckaheadofit.警车以每小时一百英里的速度追赶前面那辆卡车。atpickupataspeedof1.Well-knownfortheirexpertise,hisparents’company,called“FutureTours”,transportedmesafelyintothefutureinatimecapsule.2.Hitbyalackoffreshair,myheadached.3.Arrivingatastrange-lookinghouse,heshowedmeintoalarge,brightcleanroom.4.Havingsaidthis,hespreadsomefoodonthetable,andproducedabedfromthefloor.5.Exhausted,Islidintobedandfellfastasleep.完成句子1.因为担心这次旅行，头几天我心里总是不踏实。____________thejourney,Iwasunsettledforthefirstfewday.(worry)2.他父母的公司叫做“未来之旅”，以其技术高超而闻名，他们把我装在一个时间舱里，平安地把我送入了未来。_____________theirexpertise,hisparents’company,called“FutureTours”,transportedmesafelyintothefutureinatimecapsule.(know)3.由于缺乏新鲜空气，我感到晕眩的。______________freshair,Ifeltdizzy.(lack)4.一开始，新的环境让我很难忍受。Atfirstmynewsurroundings________________.(tolerate)WorriedaboutWell-knownforLackingweredifficulttotolerate5.当我们到达一个看上去像是个大市场的地方时，我看不见王平了。IlostsightofWangPingwhenwereached____________alargemarket.(look)6.一到了那幢看上去很奇怪的房子，他把我带到一个明亮而洁净的大房间。__________thestrange-lookinghouse,heshowedmeintoalarge,brightcleanroom.(arrive)7.说完这些，他把食物摆在桌子上，又从地板下取出一张床来。__________this,hespreadsomefoodonthetable,andproducedabedfromthefloor.(say)8.因为实在是太累了，我溜上床很快睡着了。___________,Islidintobedandfellfastasleep.(exhaust)whatlookedlikeArrivingatHavingsaidExhausted