2020-2021学年高中英语Unit10学案北师大版必修4

MoneyPeriodFiveCommunicationWorkshop,CultureCorner&BulletinBoard课前預习KEQIANYUXI.重点单词contactvt.&n»接触，联系textbook〃.课本,教科书diskn,磁盘replacevt,代替，取代incredibly打7に难以置信地fincredibleadj,不可相信的,难以置信的trulyadv,准确地;真正地・*trueadj.真实的,真的,确实的ftruthn.真理,事实.核心短语be_[nadg_of由 制成feel_tir6d感到疲劳go_forawalk去散步getbored感到厌烦goround四处走动bekeentodosth.渴望做某事insteadof代替,而不是makeup组成,构成beallowedtodosth.被允许做某事takepartin参加havefunwithsb. 和某人玩得开心dreamof梦想withease轻松地beassociatedwith与 有联系,与 有关.经典句式.Thereisnodoubtthat...毫无疑问 Thereisnodoubtthatitwillhelpustocureallsortsofillnesses.毫无疑问,它能帮助我们治疗各种疾病。.不定式的省略Tobeapartofthisexcitingevent,allyouneedtodoisenteryourfavouriteadvertisement.为了参加这个激动人心的赛事,你需要做的就是让你最喜爱的广告参加比赛。.形容词短语作状语Comfortableandsafe,theseattractiveshoescanbeworntoanyevent.这些漂亮的鞋子舒服而安全,在任何活动中都可以穿。

单词攻略否定前缀:in—①credibleadj.可靠的,可信的=incredibleadj,不可相信的,难以置信的②directadj.直接的findirectadj.间接的③capableadj.有能力的fincapableadj.没有能力的©correctadj.正确的fincorrectadj.不正确的KETANGHUDONG重点单词1(教材P16)contactvt.&n.联系;接触与……与……保持联系失去/与……取得联系beoutofcontactwithgetinto/incontactwith与beoutofcontactwithgetinto/incontactwith与……没有联系与……取得联系comeintocontactwithsb./sth.会见（某人）;碰上（某事）即学即用］(1)Ifyouwanttoknowmore,contactus.如果你想了解更多,联系我们。(2)Phonesmakeitmoreconvenientforpeopletomakecontactwithrelativesandfriends.手机使得人们与亲戚朋友联系起来更方便。(3)Thoughweliveinthesamecity,wehavebeenoutofcontact,witheachothersincegraduation.虽然我们住在同一座城市,但自从毕业后我们彼此就失去联系了。(4)It*softendifficultfordivorcedparentstokeepincontactwiththeirchildren.离了婚的父母要和孩子们经常接触往往是困难的。(5)Thepilotlostcontactwiththecontroltower.飞行员与控制塔失去了联系。replacevt.替换,取代;把 放回原处;代替(教材P17)Well,it'sadisktoreplaceourtextbook.这是ー个取代我们课本的磁盘。(1)replacesb./sth, 代替某人/某物

replace...with bereplacedby...(2)replacement〃.用……替换……被……替换用……替换……被……替换[U]代替;替换replaceable(3)taketheadj.placeinplaceof可代替的;可替换的Of代替,替换（动词短语）代替,顶替（介词短语）D［即学即用］(1)Acodeusessymbolstoreplacewords,phrases,orsentences.密码就是用来代替单词、短语或句子的符号。⑵We'vereplacedtheoldaddingmachinewithcomputer.我们用电脑取代了老式的计算器。(3)Inthiscookbook,sugarcanbereplacedbyhoney.在这个食谱中,可用蜂蜜代替糖。(4)Clevernesscan'ttaketheplaceof/beinplaceofknowledge.聪明不能代替知识。(教材P18)However,fortheeuro,twelvedifferentcountrieswereinvolved,andeachcountrywasaskeenastheothertoberepresented.但是,欧元情况不然,它涉及了12个不同的国家,每个国家又都像其他国家一样渴望出现在画面上。•involvevt.包含,涉及;使陷入;参与1)involvesb./oneselfin(doing)sth.使某人/自己卷入/参与/专心于(做)某事involvedoingsth,包括干某事;需要干某事2)involvedadj.复杂的;有牵连的,有关的be/getinvolvedin(doing)sth.卷入/参与(做)某事;热衷于,专心于(做)某事D［即学即用］(1)Sincethismeetingdoesn'tinvolveme,IthinkI'dbetterleavenow.既然这场会议不牵涉到我,我想我现在最好离开。(2)Studentsshouldinvolvethemselvesincommunityactivitieswheretheycangainexperienceforgrowth.学生应该参与社区活动,在社区活动里他们能够获得成长的经验。(3)单句语法填空①TheprofessorwasinvolvedinworkingoutaplanwhenIenteredtheoffice.②Michellefoundajobasahighschoolteacherwhichinvolvesspending(spend)quitealotoftimewithstudents.•keenadj.热切的；热情的;强烈的;敏锐的bekeentodosth.渴望做某事bekeenon...热衷于 ,非常喜欢 D［即学即用］(4)Dogshaveakeensenseofsmell.狗的嗅觉很灵敏。(5)Ingeneral,thenorthernersarekeenondumplingswhilethesouthernersarefondofrice.一般说来,北方人喜欢水饺,而南方人喜欢大米。(6)Peterwaskeentoshowoffhisnewcarthemomenthesawhisfriends.彼特ー看到他的朋友就非常渴望炫耀一下他的新车。核心短语beassociatedwith与 有联系,与 有关(教材P18)Usually,acurrencyisassociatedwithonecountryonlysoitiseasiertofindimagesandsymbolstoputonthecoinsandnotes.一般说来,ー种货币只与一个国家相关,因此找到印制在硬币或纸币上的图案和符号并不难。(l)associatev,交往;把 联系在ー起;使结合在ー起associate...with...把 与 联系在ー起associatewithsb,与某人交往/为友(2)associationn. 协会;联盟;联系,交往;联想inassociationwith与 联合/交往D［即学即用］(1)Ialwaysassociatethesmelloftheseflowerswithmychildhood.闻到这些花香,我就会联想到童年时代。(2)Hedoesn'twanttoassociatewithsuchkindofpeople.他不想与这种人交往。(3)Therearemanyserioushealthproblemsinassociationwithsmoking.有很多严重的健康问题与吸烟有关。(4)单句语法填空①Tobehonest,Idon'twanttoassociatemyselfwithyouraffairsatall.②Thefilmwasproducedinassociation(associate)withanindependentcompany.©Associated(associate)withamurdercase,hewasarrested.(教材Pl8)However,insteadofshowingreal,existingstructures,heusedphotographstomakeupimaginarystructuresthatbestrepresentedthedifferentarchitecturalstyles.然而,他没有去展现真实存在的建筑结构,而是用相片组成一个想象中的最能代表不同建筑风格的结构图。•insteadof代替,而不是［辨析比较］insteadof,insteadinsteadof“代替,而不是”,为介词短语,后接名词、代词、动名词、介词短语等instead可单独使用，为副词。置于句首或句末。置于句首时,常表示“（不是）而是/反而 “D［即学即用］(l)MikewillbeplayinginsteadofmeonSundays.周日麦克会代替我参赛。(2)Wewilldealwithitnowinstead,ofwaitinguntiltomorrow.我们会现在处理这件事,而不是等到明天。(3)Weshouldn*tlookdownuponthem;insteadweshouldtrytohelpthemandtakemorecareofthem.我们不仅不该歧视他们,反而更要多帮助、照顾他们。•makeup组成;化妆;弥补;编造;辨认出;和解bemadeupof由 构成makeit成功;办到makeone'swayto走向,前往,到 地方去makesense 讲得通,有意义makesenseof理解makefor...前往 o...把 变成 makeout弄清楚D［即学即用］(4)UncleTommadeupaninterestingstoryforthechildren.汤姆叔叔给孩子们编了个有趣的故事。(5)Shehadbeenabsentfromschoolfortwoweeks,soshenaturallyhadalotofhomeworktomakeup.她已经两个星期没上课了,自然而然地就有许多功课要补。(6)Thisteamismadeupofabouttwentypeople.这个队由大约20人组成。(7)Itishardtomakeoutwhohasdoneit.很难弄清谁做了这件事。(8)Thetraingoesat10：15.Ithinkweshallmake_it.火车十点一刻开。我想我们能赶上。(9)写出下列句中makeup的含义①Hemadeupsomeexcuseaboutthedogeatinghishomework,编造②Itdidn*ttakeherlongtomakeup.化妆③Sorry,I'mlate;I'llmakeupthetimethisevening,弥ネト④Theyarguealot,buttheyalwayskissandmakeup.和社⑤Womenmakeup40percentoftheworkforce.组成经典句型!教材P17Thereisnodoubtthatitwillhelpustocureallsortsofi1Inesses.毫无疑问,它将帮助我们治疗各种疾病。本句中Thereisnodoubtthat...为固定句式,意为” 毫无疑问”。本句中的that引导同位语从句,说明doubt的具体内容。{ (about/of+〃.somedoubt],,.对 有些疑问[whether从句nodoubtthat. 是无疑的Sb.hassomedoubtabout/of+/?.某人对 有些疑问indoubt 未确定的withoutdoubt无疑地(2)doubtwhether/if...怀疑 don'tdoubtthat...确信doubt后接同位语从句、否定句及疑问句由that引导,接肯定句由whether/if引导。(3)Thereisnopossibi1itythat... 是没可能的Thereisnoneedtodo...没有必要做 Thereisnohurrytodo...不急于做某事Thereisnopoint(in)doingsth.做某事是没有意义的D[即学即用](1)Thereisnodoubtthatitcanenhancepeople'sconsciousnessofhealth.毫无疑问,它能增强人们的健康意识。(2)ThereisnodoubtthattheTVserieswasasuccess.毫无疑问,这部电视剧很成功。(3)Thereissomedoubtwhetherhewillsucceedthistime.他这次是否会成功,还有些疑问。(4)Thecauseoftheaccidentisstillindoubt.那次事故的原因仍未确定。(5)1doubt,whether/ifthenewonewillbeanybetter.我不敢肯定这个新的是否会好些。

⑹He'salreadyknowntheresult.There,isnoneedtotellhim.他已经知道结果了,没有必要再告诉他了。(7)Thereisnopoint(in)arguingwiththemwhohavenoreason.跟那些不讲道理的人争论是没有意义的。2教材P19Comfortableandsafe,theseattractiveshoescanbeworntoanyevent.这些漂亮鞋子非常舒服和安全,在任何活动中都可以穿。comfortableandsafe为形容词短语,在句中作状语,用来补充说明主语,其逻辑主语为句子的主语。形容词除了可以作定语、表语、补语外,还可以在句中作状语,具有副词的功能,形容词作状语时,常用逗号与句子的其他部分隔开。D［即学即用］(l)Thegoatrolledover,dead.山羊打了个滚,死了。(2)Foramomentshejuststoodthere,unabletobelievewhathadjusthappened.她在那儿呆呆地站了一会儿,不敢相信刚オ发生的事情。(3)Lonelyandunhappy,theoldmanlivedbyhimself.那个老人自己生活,既孤独又不开心。(4)Wearrivedhomeverylate,safeandsound.我们回家很晩,安然无恙。酶课后训练酶课后训练KEHOUXUNLIAN.单句语法填空Theemployerinvolved(involve)insuchaplanhasadirectfinancialinterestinpreventingunemployment.Hehasalwaysbeenkeenondoingphysicalexercise.Thismachineistooold.Ithinkweshouldreplaceitwithanewone.Hemadecontactwithmanywealthypeopleinraisingmoneyfortheproject.There'ssomedoubtwhethershewillcomeontime.Inthechildren'sminds,summerisassociated(associate)withpicnics.1.Ifyoulikeastronomy,youmaybekeenoncollecting(collect)stampsdescribingthestars,planets,etc.Hefeltsosickthathewenttoworkbytaxiinsteadofonfootyesterday.Roberthasrichworkexperience,soitwillmakeugforhislackofacademicknowledge.Somekindsofbamboogrownohigherthanyourankles.

II.完成句子Sixwomenandnineteenmenmake,upthecommittee.6位女士和19位男士组成了这个委员会。Teacherswillneverbereplacedbycomputersintheclassroom.课堂上电脑永远不会取代老师。Cigarettesmokinghasbeenassociatedwithlungcancer.肺癌被认为与吸烟有关。Theheadmasterrecommendedthathemajorinartsinsteadofscienceinuniversity.校长建议他在大学主修文科而不是理科。ThereisnodoubtthatTomisadiligentstudent.毫无疑问,汤姆是ー个勤奋的学生。Hegothometwohourslater,tiredandhungry.两个小时后,他回到家,又累又饿。Manystudentsarekeentogoabroadforfurthereducation.很多学生都渴望到国外去进ー步深造。Haveyoukeptincontactwithyourfriendsfromcollege?你和大学里的朋友还保持联系吗?MoneyPeriodFourLesson4Advertisements课前预习KEQIANYUXI课前预习KEQIANYUXII.重点单词headphonen,耳机freedomn,自由automaticadj,自动的focusn.调焦;焦点flashn.闪光灯;闪烁customern.顾客cleanern,清洁器;清洁工人practicaladj.实用的,实践的;可实施的,可行的一艮racticallvadv.实际上，事实上一practicen.&v.实践,练习fpractisev.实践,练习wiren»金属丝,金属线fwiredadj,装有线的,有线的fwirelessadj,无线的bathn.浴缸;洗澡—bathev.给 洗澡signaln.信号,暗号-sign〃.符号,记号に签名,签订fsignaturen.签名,署名photographyn.摄影术,摄影fphotographn.照片fphotographern.摄影师;摄影者noisyadj.嘈杂的，喧闹的一noisen.噪音;喧闹声noisilyadv»嘈杂地,喧闹地translationn,翻译ーtranslatev.翻译ーtranslatorn,翻译者,翻译家.electricadj.用电的-^electricaladj»电气科学的，与电有关的—electricityn.电流，电学.核心短语upエ0高达,多达gothrough穿过worryabout担心bemadefrom由 制成betiredof对 厌烦puton戴匕穿上intheory在理论上abit有点儿focuson使聚焦于;致カ于.经典句式while引导时间状语从句Youcanlistentoyourfavouriteprogrammeswhileyouarewalkingroundthehouseorgarden!当你在房间里或花园里四处走动的时候,你可以听你最喜欢的节目!no+比较级+thanItisnobiggerthanacreditcard!它跟ー张信用卡ー样小!find+宾语+宾语补足语Doyoufindhouseworktiringandboring?你是否觉得家务活又累又烦?be+adj.+todosth.Theyareverypracticalandeasytowash.它们非常实用且便于清洗。单词攻略.“in+名词”的常见短语:

①introuble在困境中 ②ippeace安静的,安宁的③inrelief如释重负④indebt负债累累⑤inrags衣衫褴褛⑥inplace在适当的位置⑦intheory理论上.以一er结尾表示职业的名词:①clcan”清洁器;清洁工人②reporter记者③waiter男服务员④writer作家⑤driver司机⑥teacher教师©announcer广播贝课文预读 ［原文呈现］——RemoteHeadphones ［原文呈现］——RemoteHeadphones（ヽThesefantasticheadphonesfromPhilipshavenowires'.Youcanlistentoyourfavouriteprogrammeswhileyouarewalkingroundthehouseor_garden!Youcanlistentorelaxingmusicinthebathr,!而WithRemoteHeadphonesyoucangouptosixtymetresawayfromyourradioorTV.Thesignals'gothroughaglass.doorsandwalls.Theseexciting.newheadphonesgiveyoufreedom9tomovearound*1plustopqualitysound.Excellentvalueat⑪:£80.45MiniCameraInterestedinphotogniphy?Fujikohasproducedanamazingnewminicamera—theadvanced111001ix.Itisnobiggerthan11acreditcard”!Itisconvenientk,andveryreliable.Itisre-•依“fiallyeasytouse,too.Ithasanautomatic*focus'andflash.soyoudon'thavetoworryaboutanything.It'salsomadefrom*anattractiveandstrongmaterial.TheMiniCameraisnotexpensiveeither!Cost：£199.99（Dfantasticadj.奇舁的,了不起的（2headphone/'hedfoon/n.头戴式受话机,耳机③wire/waiコ/”.金属丝,金属线※ッ丽品引导时冋状语从句当while引导时间状语从句时,从句谓语动词必須用延续性动词④relaxing.カ.轻松的,令人放松的（说明ポ物所JL行的特征）relaxedadj.轻松的,不紫张的（说明人所处的状态）⑤bath/ba：6/”.浴缸;洗澡@upt。达到（某数吊:、程度）;れ到⑦signal/hgnl/".信号,暗号make/giveasigna!发信号⑧gothrough穿过,通过getthrough打通电话;用完;穿过,通过（!>freedom/Yrirdam/n,自由⑩movearound四处走动®itprep.以 的价格12ph（Hography/fa'tngrafi//i.摄影术,摄影※此处Interestedin...?=Areyouinterestedin...?⑬advanced〃カ高级的.先进的■Unobiggerthan和 ー样不大notbiggerthan不如 大^creditcard信用k⑭convenientadj.カ便的0;automatic/Q：to'manik/的.『I动的⑱focus/'f3okos/n.调用;焦点focuson致カ于;使聚焦F⑲flash/flaj/m闪光灯;闪光,闪烁3）bemadefrom由 制成［以上段落译文］无线耳机飞利浦公司生产的这些神奇耳机没有电线。（戴着它）你可以边在房子或花园周围散步,边听你最喜欢的节目!你可以在洗澡时听轻松的音乐!带着无线耳机,你可以走到离收音机或电视机60米远的地方。信号可穿透玻璃、门和墙壁。这些令人兴奋的新型耳机带给你四处移动的自由以及高质量的声音效果。诱人的价格:£80.45

迷你相机对摄影感兴趣吗?富士公司生产了一种奇异的新型迷你相机ーー高级1001ix。它和一张信用卡ー样小!它既方便又十分可靠。它也的确便于使用。它有自动聚焦和闪光（功能）,因此你不必担心任何事。它也是由一种既美观又坚固的材料制成的。而且这款迷你相机也不贵!价格:£199.99SpecialJewellery'1ForYourEarsThesearegoldandattractive.Theyarealsousefulinmanynoisy~situations.Whenyouaretired〇价格:£199.99SpecialJewellery'1ForYourEarsThesearegoldandattractive.Theyarealsousefulinmanynoisy~situations.Whenyouaretired〇产!ouddiscomusic,orboredataparty,youdon'thaveto-listen.Simplyputthemon”!rhousandsofsatisfiedcustomers*JAbargainなat£19.50!FelineFloorCleanersDoyoufindhouseworktiringandboring?Areyouworriedaboutthestateofyourhouseorflat?Haveyougotacatthatwalksroundyourflatallday?Hereistheperfect田solution?).Itwillchangeyourlife.Putthefloorcleanersonyourcat.andsitbackandrelax.Thecleaners'aremadefromgoodqualitymaterial.Theyareverypracticalandeasytowash'.Andthey'recheap!Specialoffer—completesetforonly£5.99.Writeto：AnimalMagic.P.O.Box123jewel（［C］宝石,贵重物品㉒noisy/'nnizi/財/.咕杂的,喧闹的㉓betiredof厌倦㉔don'thavetodosth.=don'tneedtodosth.=needn'tdosth.不必做某事㉕puton穿上.戴上㉖customer/'kAstama/让顾客®bargainn,特价商品;便宜东西Xfind后跟宾语补足语:※由融引导定语从句.修饰先行词acat,that在从句中作主语,不可省略，㉘perfect的.完美的⑤solutionn.解决办法,后接tosth.,表示“某事的解决办法”®cleaner/'kli:na//i,清洁器;清洁工人㉛practicaladj.实用的,实践的©beeasytowash容易清洗※不定式在作表语的形容词后,且与主语构成逻辑上的动宾关系.此时不定式用主动形式表示被动含义.［以上段落译文］带耳塞的耳环它们是金色的,非常吸引人,它们也可以在许多嘈杂的场合使用。当你厌倦了高音迪斯科音乐，或在聚会上感到厌烦时，不必再听下去。简单地戴上它们就行了!我们有成千上万感到满意的顾客!优惠价:£19.50〇猫地板擦你是否觉得家务活又累又烦?你是否担心房子或公寓的卫生状况?你是否有只猫，整天在公寓里走来走去?这儿有个绝妙的解决办法。它会改变你的生活。把地板擦系在猫身上,然后你就坐下来放松吧。地板擦由优质材料制成，它们非常实用且易于清洗，而且便宜！特惠价ー一整套仅售£5.99。来信请寄:动物魔力，123信箱课文理解TaskOne：FastreadingI.Thetextmainlytellsusaboutadvertisementsforfourkindsofgoods.II.Judgethefollowingstatementstrue(T)orfalse(F).Walkingroundthehouseorgarden,youcanlistentoyourfavouriteprogrammeswithRemoteHeadphones.(T)TheseheadphonesfromPhilipshavenowires.(T)TheMiniCamerahasanautomaticfocusandflash.(T)Puttingthespecialjewelleryonyourears,youcanhearthelouddiscomusic.(F)Ifyouwantafloorcleaner,youcanwritetoAnimalMagic,P.0.Box321.(F)TaskTwo：CarefulreadingReadthetextcarefullyandthenchoosethebestanswersaccordingtothetext.ThefollowingcanbestdescribetheminiFujikocameraEXCEPT.A.smallinsize B.fragileC.automatic D.excellentvalue答案:BIfyouhave£100,whatcanyoubuy?RemoteHeadphonesandMiniCamera.MiniCameraandEarring.FelineFloorCleanersandMiniCamera.RemoteHeadphonesandEarring.答案:DForonewhoprefersnottobedisturbedinacrowdedenvironment,whichofthefollowingmaybehisfirstchoice?Remoteheadphones.Minicamera.Specialjewelleryforears.Felinefloorcleaners.答案:CAllthefollowingdoNOTtellcustomerswheretocontactEXCEPT.RemoteheadphonesMinicameraSpecialjewelleryforyourearsFelinefloorcleaners答案:DFromthefourads,wecantellthatnewtendencies(趋势)inadvertisingseemtobeEXCEPT.A.passive B.thoughtfulC.persuasive D.creative答案:ATaskThree：MicrowritingReadthetextcarefullyandfillinthefollowingblanks.

RemoteHeadphonesThesefantasticheadphonesfromPhilipshavenowires.Youcanlistentoyourfavouriteprogrammes1youarewalkingroundthehouseorgarden!Youcanlistento2(relax)musicinthebath!Excellentvalue3：£80.45.MiniCamera4(interest)inphotography?Fujikohasproducedanewminicamera-theadvancedlOOlix.Itisno5(big)thanacreditcard!Itis6(convenience)andveryreliable.TheMiniCameraisnotexpensiveeither!SpecialJewelleryForYourEarsThesearegoldandattractive.Theyarealsousefulinmany7(noise)situations.Thousandsofsatisfiedcustomers!FelineFloorCleanerAreyouworriedaboutthestateofyourhouse8flat?Hereistheperfect9(solve).Putthefloorcleanersonyourcat,andsitbackandrelax.Thecleanersareverypracticalandeasy10(wash).Specialoffer-completesetforonly£5.99.1.while2.relaxing3.at4.Interestedbigger6.convenient7.noisy8.orsolution10.towash的课堂互动的课堂互动KETANGHUDONG重点单词(教材P14)Ithinkelectrictoothbrushesarenotverypractical.我认为电动牙刷不是很实用。•electricadj,与电有关的;电动的;用电的(1)electric表示和电相关的,指用电操作的或发电的物体anelectricfan/lamp电扇/灯(2)electricaladj.“电的;电气科学的”,表示与电有关的人或物。［□［即学即用］(l)Pleaseturnofftheelectricpower.请把电源关掉。(2)Anelectricshockcankillyou.电击可置人于死地。(3)Heisanelectricalengineer.他是个电气工程师。•practicaladj.实用的;实践的;可实施的(l)practicen.&v»练习,实践inpractice在实践中;实际上practicedoingsth.练习做某事putintopractice把 付诸行动commonpractice习惯的做法;惯例internationalpractice国际惯例(2)practicallyadv, 实际上,几乎,简直D［即学即用］(4)Ialsotooksomepracticalstepstoloseweight.我也采取了一些切实可行的措施减肥。(5)Practicemakesperfect.(谚语)熟能生巧。(6)Inpractice,theeconomicpolicymadebythegovernmentdidntwork.实际上,由政府制定的那项经济政策并未奏效。⑺Jenny'smothermakesherpractiseplayingthepianoeveryevening.詹妮的妈妈让她每天晚上都弹钢琴。signal〃.信号,暗号v,向 发信号;示意(教材P14)Thesignalsgothroughglass,doorsandwalls.信号可穿透玻璃、门和墙壁。signal(to)sb.todosth.示意某人做某事signal(to)sb.that...(向 )发信号示意/说 D［即学即用］(l)Chestpainscanbeawarningsignalofheartproblems.胸部疼痛可能是心脏病的报警信号。(2)Youmustsignalwhichwayyouaregoingtoturn.你要朝哪个方向转,必须发出信号。(3)单句语法填空①Hesignaledtothewaiterforthebi11.②Thepolicesignaledthedrivertostop(stop)hiscarbyraisinghishand.［辨析比较］mark,sign,signal,symbolmark标志,标记侧重于区别性或揭示性的标志。作动词，意为“做标记”。sign记号,标记可指用于识别或指示的标志。还作“征兆，迹象”以及作动词“签名:打手势”讲。signal信号用于传达某些信息的信号，也指灯光、声音或信号标志。symbol象征,符号指被人们选出的物体或图案,并作为该事物的标记或象征。(4)Thesirenwasasignalforeveryonetoleavethebuilding.警报器ー响就意味着要所有人离开大楼。(5)Veryoftendarkcloudsareasignofrain.乌云常常是下雨的预兆。(6)Accordingtothetradition,theeagleisusuallyregardedasasymbolofcourage.按照传统,鹰常常被人们当作勇气的标志。(7)ThechiIdrenleftdirtymarksal1overthekitchenfloor.孩子们把厨房的地板弄得污迹斑斑。focusn,调焦;焦点(教材P14)Ithasanautomaticfocusandflash,soyoudon'thavetoworryaboutanything.它具有自动调焦功能和闪光灯,因此你没有必要担心任何事情。thefocusof... 的焦点,中心点bein/outoffocus焦点对准的/没有对准的focusk把焦点对准 ;集中focuson/upon集中于focussth.on/upon把焦点对准 ;把注意カ或精力等集中于……focusone'sattentionon把注意力集中到 上D［即学即用］(l)Healwayswantstobethefocusofattention.他总想成为注意力的焦点。(2)Thenoisemadeithardformetofocusonwork.噪声让我无法集中注意力工作。(3)单句语法填空①Hefindsithardtofocushis