电子课件《电工英语(第三版)》A013750电工英语电子课件unit2.ppt

1、ELECTRICAL ENGLISH英语英语电工Unit 1 Job and WorkplaceUnit 2 Electrical Tools and MaterialsUnit 3 House WiringUnit 4 Measuring InstrumentContents Unit 5 Motors and TransformersLesson 4 What Are in Your Tool-kit?Lesson 5 Wires and CablesLesson 6 Joining WiresUnit 2 Electrical Tools and MaterialsLesson 4 Wh

2、at Are in Your Tool-kit?Goal Identify the basic tools used in the electrical trades.Look and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesA.Look up the phrases below in a dictionary.Fill in the blanks with both Ch

3、inese and English answers according to the pictures.construction sitebricklayertrunkingtool-kit1._ 2._ 3._4._tool-kit工具箱construction site建筑工地bricklayer砖瓦匠trunking线槽 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesB.Look up the phrases below in a dictionary.Fill in the

4、 blanks with both Chinese and English answers according to the pictures of toolelectric drillhammer drillpliersscrewdriver1._ 2._ 3._4._electric drill电钻hammer drill冲击钻screwdriver螺丝刀pliers钳子 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesTom Smith（A）是新参加工作的建筑电工，他在工地办公

5、室内向工程项目经理（B）请教工作上的问题。A:Good morning,madam.B:Good morning,you must be Tom.A:Yes,Tom Smith.B:Welcome to join our company.A:So where can I start my work?B:Well,your job is to install and wire the electrical systems in partially built building,following wiring diagrams.You also install electronic equipm

6、ent and signal communication systems.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesTom Smith（A）是新参加工作的建筑电工，他在工地办公室内向工程项目经理（B）请教工作上的问题。A:What are the electrical power tools usually used at construction site?B:Electric drill and hammer drill are probably used most fre

7、quently tools.They may be used to drill metal,wood,concrete walls and floors.A:Okay!Thank you!B:You are welcome.Feel free to ask me anytime you need help.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesA.Choose the best answer.1.Tom is a electrician.A.construction;B.i

8、ndustrial;C.commercial;D.residential2.Toms job is to the electrical systems.A.maintain;B.install and wire;C:repair;D.inspect3.Electric drill is used to drill walls and floors.A.metal,wood,concrete;B.concrete;C.metal,wood;D.steel(钢制)ABA Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42W

9、ords and PhrasesB.Reorder the letters with your partner.LettersWordsri d ll gram dia ly fre quent tion construc a communic tion drilldiagramfrequentlycommunicationconstruction Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and Phrases电工工具箱电工工具箱An electricians tool-kit will refl

10、ect both the specific and general nature of the work.The basic tools required by an electrician are those used in the stripping and connecting of conductors.These are pliers,side cutters,knife and an assortment of screwdrivers.The tools required in addition to these basic implements will depend upon

11、 the type of installation work being undertaken.When wiring new houses or rewiring old ones,the additional tools required are those usually associated with a bricklayer.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and Phrases电工工具箱电工工具箱When working on industrial installations,

12、installing conduit and trunking,the additional tools required by an electrician would more normally be those associated with a sheet metal trades.Portable electrical tools can reduce much of the hard work for any tradesman and increase his productivity.Electrical tools should be maintained in a good

13、 condition and be appropriate for the purpose for which they are used.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesA.Match the English with the Chinese.Draw lines.B.Read the passage again and circle Yes or No.1.The basic tools required by an electrician are power t

14、ools.Yes No2.The basic tools are usually associated with a bricklayer.Yes No3.The basic tools are associated with a sheet metal trades.Yes NoAn assortment of sweets.做科学实验be appropriate for different students 什锦糖work on science experiments 适合不同的学生NoNoNo Unit 3 Lesson 4 Look and Study Dialogue Reading

15、 Further Study42Words and PhrasesC.Learn the important grammar and phrase in the text.1.being done 现在分词的一般被动结构做定语，表示一个正在进行或与谓语动作同时发生的被动动作The tools required in addition to these basic implements will depend upon the type of installation work being undertaken.在基本工具外，还需要的工具取决于电工所从事的安装工作。练习：The building

16、 being built now will be used as a hospital.中文：2.be associated with与有关系The additional tools required are those usually associated with a bricklayer.另外一些工具通常与砖瓦匠工作有关。练习：电气故障经常与绝缘材料失效有关。提示：breakdown,failure,insulating英文：现在正在建造的建筑将会作为一个医院。Electrical breakdown is often associated with the failure of ins

17、ulating materials.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and PhrasesCommon Tools.Needle-nose pliers尖嘴钳 Side cutters剪钳 Diagonal pliers斜嘴钳 Wire strippers剥皮钳 Flat-blade screwdriver一字旋具Phillips screwdriver十字旋具 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42W

18、ords and PhrasesCommon Tools.Electricians knife电工刀 Slip-joint pliers鲤鱼钳 Test pencil验电笔Hammer锤子 Steel measuring tape钢卷尺Hacksaw弓锯 Adjustable wrenches活动扳手 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and Phrasespartially pa:li adv.部分地diagramdairm n.图表signal sinl n.信号communicatio

19、n k,mju:nikein n.通讯tool tu:l n.工具construction knstrkn 建造，建筑业site sait n.地点，位置；场所electric ilektrik adj.电的；电动的drill dril n.钻孔机；vt.钻孔hammer hm n.锤子，榔头frequently fri:kwntli adv.频繁地，经常地concrete knkri:t adj.混凝土的kit kit n.工具箱，成套工具tool-kit工具箱（套）reflect riflekt vt.反映specific spisifik adj.专门的，特定的nature neit n

20、.性质，本性conductor kndkt n.导体plier plai n.钳子side said adj.侧的cutter kt n.刀具，切割机assortment s:tmnt n.各种种类搭配screwdriverskru:,draiv n.旋具，螺丝刀implement implimnt n.工具，器具undertake,ndteik vt.承担rewire ri:wai vi.重装电线additional dinl adj.附加的，额外的bricklayer brik,lei n.泥瓦匠conduit kndit n.电线管trunking trki n.线槽sheet i:t

21、n.薄片，薄板trade treid n.贸易，行业portable p:tbl adj.便携式的，手提式的reduce ridju:s vt.减少，降低tradesman treidzmn n.技工productivity,prdktivti n.生产力，生产率 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study42Words and Phraseswiring diagrams布线图signal communication systems通信系统construction site建筑工地Tool kit 工具箱（套）s

22、ide cutters剪钳an assortment of各种各样的be associated with与有关系work on从事于sheet metal钣金much of许多、大量be appropriate for对适合Lesson 5 Wires and CablesGoal identify basic wires and cablesLook and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Wor

23、ds and PhrasesLook up the phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures of wire and cable.insulated solid wireinsulated stranded wirenonmetallic sheathed cablearmored cable1._ 2._ 3._ 4._insulated solid wire绝缘实心线armored cable铠装电缆nonm

24、etallic sheathed cable非金属护套电缆insulated stranded wire绝缘多股绞线电线 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesJane Goodall（A）通过电话订购电线，Mitchell（B）负责此项服务。A:Hello,this is Jane Goodall.May I speak to Mr.Mitchell?B:Hello Ms.Goodall,this is Arthur Mitchell.How can I help you

25、?A:Hello,Id like to place an order for electrical wire.B:How many are you interested in ordering for purchase?A:Quite a few.Can you tell me how to choose wire gauge?B:Calculate the amperage for each device,and look up your total amperage in the Maximum Amps for Power Transmission column of the gauge

26、 chart.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesJane Goodall（A）通过电话订购电线，Mitchell（B）负责此项服务。A:Could I get an estimate before place an order?B:Certainly,Ill have it for you by the end of the day.How would you like to pay?A:Can you pay by cheque?B:Im sorry.We only

27、offer credit card payments or cash on delivery to new customers.A:Thats OK.Cash on delivery,then,please.Thank you for your help.B:My pleasure.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesA.Listen to the dialogue and circle Yes or No.1.Mitchell is responsible for se

28、lling products by phone？Yes No2.It is necessary to calculate the voltage of each deceive for choosing wire gauge.Yes No3.The order must be paid by cash.Yes NoB.Match the English with the Chinese.Draw lines.place an order with you 电力传输power transmission 向贵方订货quite a few days 好几天Yes No No Unit 3 Lesso

29、n 4 Look and Study Dialogue Reading Further Study52Words and Phrases电线和电缆电线和电缆Technically,the metallic material through which electric current flows is called a conductor.In practical terms,most people call it wire.There are three different styles of wire.Bare wire is just what the name states,non i

30、nsulated.Insulated solid wire is a solid piece of wire that is coated and encased in a plastic coating.The last is insulated stranded wire.This has many smaller sized strands of copper and is also wrapped in a protective plastic coating.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52

31、Words and Phrases电线和电缆电线和电缆There are two different types of cables that are normally used.The nonmetallic sheathed cable has two or more insulated conductors and usually a bare ground wire.They are all wrapped in an outer protective plastic sheath.The other is armored cable in which there is a black

32、,red,white and green insulated wire inside of a protective flexible metal housing.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesA.List the types of wire and cable.B.Reorder the letters with your partner.WireCable LettersWordsent curr en case d lic metal protec tive

33、non metal lic bare wireinsulated solid wireinsulated stranded wirenonmetallic sheathed cablearmored cablenonmetalliccurrentencasedmetallicprotective Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesC.Learn the important grammar and phrase in the text.1.which引导定语从句Techn

34、ically,the metallic material through which electric current flows is called a conductor.在专业技术上，通过电流的金属材料称为导线。练习：He built a telescope through which he could study the skies.中文：2.in.terms（in terms of sth.）谈及；就而言；在方面In practical terms,most people call it wire.实际上，多数人称之为电线。练习：中国在太阳能发电方面具有优势。提示：solar pow

35、er generation英文：他做了一个望远镜，通过它可以研究天空。China has advantage in terms of solar electrical energy generation.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesHow to Select Electrical Wire？Because so many types of wire are available（可用）,it can sometimes be difficult for buyers

36、（买主）to choose the best material to meet their needs.The wrong wire may cause a device to malfunction（失灵）,and even lead to increased fire risks depending on the application（应用）.To choose the correct electrical wire,consider features such as gauge,amps,temperature and color before making your final se

37、lection.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and PhrasesWiring Color Codes（电线颜色规范）（电线颜色规范）IEC(most of Europe)AC power（交流电）circuit（电路）wiring color codes（规范）Function功能Label标记ColorProtective earth保护接地PEgreen-yellowNeutral中性线NblueLine,single phase单相线LbrownLine,3-phase三相线L

38、1brownLine,3-phaseL2blackLine,3-phaseL3greyUS AC power circuit wiring color codesFunctionLabelColorProtective ground保护接地PGbare,green,or green-yellowNeutralNwhiteLine,single phaseLblack or red Line,3-phaseL1blackLine,3-phaseL2redLine,3-phaseL3blue Unit 3 Lesson 4 Look and Study Dialogue Reading Furth

39、er Study52Words and Phrasesplace pleis vt.放置，发订单purchase p:ts n.购买gauge eid n.规格calculate klkjuleit vt.计算amperage mprid n.安培数device divais n.装置total tutl adj.全部的maximum mksimm adj.最大极限的amp mps n.安培数transmission trnzmin n.传送column klm n.栏，列chart t:t n.图表estimate estimeit n.估价cheque tek n.支票credit kre

40、dit n.信用payment peimnt n.付款，支付cash k n.现款，现金delivery dilivri n.交货；vt.传送technically teknikli adv.技术上metallic mitlik adj.金属的current krnt n.（水，气，电）流flow flu n.流动practical prktikl adj.实际的term t:m n.术语style stail n.类型bare b adj.裸露的state steit vt.声明，陈述insulate insjuleitvt.使绝缘insulated ins,leitd adj.绝缘的sol

41、id slid adj.固体的，实心的 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and Phrasescoated kutid adj.上涂料的，覆盖着的stranded strndid adj.绞成股的encased adj.包装的coating kuti n.包层strand strnd n.线size saiz vt.改变大小copper kp adj.铜的wrap rp vi.包起来protective prutektiv adj.防护的nonmetallic,nnmitlik adj.非

42、金属的sheathed i:t adj.装有护套的outer aut adj.外面的sheath i:n.护套armored:md adj.装甲的inside,insaid prep.在之内flexible fleksibl adj.柔韧的，易弯曲的 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study52Words and Phrasesplace an order订购quite a few相当多credit card信用卡power transmission电力传输cash on delivery货到付现current

43、flow电流in terms就而言no insulated 非绝缘的solid wire单线，实芯线stranded wire绞线nonmetallic sheathed cable非金属护套电缆ground wire地线armored cable铠装电缆Lesson 6 Joining WiresGoal learn descriptions of basic wire joining methodsLook and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Study Dialo

44、gue Reading Further Study62Words and PhrasesA.Look up the phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.soldering gunsafety signpower lineelectrical panel1._ 2._ 3._ 4._safety sign安全标志electrical panel配电盘power line输电线soldering gun烙铁 U

45、nit 3 Lesson 4 Look and Study Dialogue Reading Further Study62Words and PhrasesB.Look up the word and the phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures of wire joining.tap connectorwire nutsplice1._ 2._ 3._ tap connector搭接连接器Splice捻接

46、wire nut接线帽 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study62Words and PhrasesJim（A）向电工Marry（B）请教关于电气安全标志含义的问题。A:Im not quite sure the meaning of this sign,Keep Electrical Panel Clear.Dose it mean keep the panel clear?B:Yes,thats right,but it means more than that.It means do not place

47、or store anything in front of this sign.This sign reminds employees that it must be possible to get to the electrical panel at all times.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study62Words and PhrasesJim（A）向电工Marry（B）请教关于电气安全标志含义的问题。A:Oh,I see.And what about Power Lines Above sign?H

48、as it got something to do with safety?B:Yes,but here it means watch out for power lines above when you are working below.A:OK,I get it.Now what dose High Voltage Keep Away sign mean?B:It means an urgently hazardous situation.If not avoided,will result in death or serious injury.A:Ok,Ive made a note

49、of that.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study62Words and PhrasesA.Match the English with the Chinese.Draw lines.have something to do with the education methods(方法).远离火源watch out for what you say.与教育方法有关系keep away from the fire.说话要当心B.Match the pictures of safety sign with the

50、ir meanings.Draw lines.Keep away urgently hazardous situation.Do not place or store anything in front of this sign.Watch out for power lines above when you are working below.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study62Words and Phrases电线连接电线连接Solderless connectors(wire nuts)have a