汽车英语3整套课件完整版PPT教学教程最全电子讲义教案（最新）.ppt

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1、UNIT 1,Basic Structure of an Auto,Content,Section I Listening and Speaking,Section II Reading,Section III Grammar,Section IV Comprehensive Practice,Section V Self-Evaluation,Section VI Enlarge Your Vision,UNIT 1,Basic Structure of an Auto,Learning to know:,1. the basic structure of a car; 2. functio

2、ns of different parts of a car; 3. useful words and expressions about the basic structure of an auto.,Learning to do:,1. distinguish each part of the basic structure with pictures; 2. practice some working tasks in English about basic structure of an auto; 3. give a presentation about the auto basic

3、 structure.,Section I,Listening and Speaking,hub n. 毂，木片，中心 indicator n. 指示器，指示剂 shield n. 盾，防卫物 fender n. 挡泥板，护舷的垫子等 disassemble vt. 解开，分解 fluctuation n. 波动，起伏 gear n. 齿轮，传动装置,New words other special vehicles have some other special devices. Car body also includes these devices like doors, windows,

4、 chairs, external or internal gadgets, and other accessories. The electric system is composed of electric power and electrical devices, such as the air conditioning system, windshield wipers，the clock, defogger, fog lamps, fuel injectors, gauges, headlights, ignition, cigar lighter, power windows, h

5、orn, and power seats and so on.,Section II,Reading,accessory n. 附件 diesel n. 柴油机，内燃机 install vi. 安装，安置，使就职 transfer vt. 转移，调转，调任 frame n. 框，结构，骨架 assist vi. 帮助，协助 mechanism n. 机械，机构，结构 cargo n. 船货，货物 consist of 由组成；由构成 be composed of 由组成 combustion chamber 燃烧室 piston 活塞,New words 2. functions of run

6、ning system of a car; 3. useful words and expressions about running system.,Learning to do:,1. distinguish each component of running system with pictures ; 2. practice some working tasks in English about running system; 3. give a presentation about running system.,Section I,Listening and Speaking,sq

7、ueaky a. 吱吱响的；发轧声的,New words a stroke occurs when the piston moves from one limiting position to the other. The upper limit of piston movement is called TDC(top dead center). The lower limit of piston movement is called BDC (bottom dead center). A stroke is piston movement from TDC to BDC or from BD

8、C to TDC. In other words, the piston completes a stroke each time it changes its direction of motion. Where the entire cycle of events in the cylinder requires four strokes (or two crankshaft revolutions), the engine is called a four- stroke- cycle. The four- stroke- cycle engine is also called the

9、Otto cycle engine, in honor of the German engineer, Dr. Nikolaus Otto, who first applied the principle in 1876. The four piston strokes are intake, compression, power and exhaust.,Section II,Reading,Intake stroke. On the intake stroke, the intake valve has opened, the piston is moving downward, and

10、a mixture of air and vaporized gasoline is entering the cylinder through the valve port. The mixture of air and vaporized gasoline is delivered to the cylinder by the fuel system and carburetor. Compression stroke. After the piston reaches BDC, or the lower limit of its travel, it begins to move upw

11、ard. As this happens, the intake valve closes. The exhaust valve is also closed, so that the cylinder is sealed. As the piston moves upward (pushed now by the revolving crankshaft and connecting rod), the air fuel mixture is compressed. By the time the piston reaches TDC, the mixture has been compre

12、ssed to as little as one tenth of its original volume, or even less. When the air fuel mixture is compressed, not only does the pressure in the cylinder go up, but the temperature of the mixture also increases.,Section II,Reading,Power stroke. As the piston reaches TDC on the compression stroke, an

13、electric spark is produced at the spark plug. The ignition system delivers a high voltage surge of electricity to the spark plug to produce the spark. The spark ignites the airfuel mixture. It now begins to burn very rapidly, and the cylinder pressure increases to as much as 35 Mpa or even more. Thi

14、s terrific push against the piston forces it downward, and a power impulse is transmitted through the connecting rod to the crankpin on the crankshaft. The crankshaft is rotated as the piston is pushed down by the pressure above it. Exhaust stroke. As the piston reaches BDC again, the exhaust valve

15、opens. Now, as the piston moves up on the exhaust stroke, it forces the burned gases out of the cylinder through the exhaust valve port. Then, when the piston reaches TDC, the exhaust valve closes and the intake valve opens. Now, a fresh charge of airfuel mixture will be drawn in to the cylinder as

16、the piston moves down again toward BDC. This four stroke cycle of piston within the cylinder is repeated time and again to put the vehicle forward.,Section II,Reading,internal a. 国内的，内部的 cylinder n. 汽缸，圆筒，圆柱体 convert vt. 使转变，使改变信仰，倒置 rotary a. 旋转的 propel vt. 推进，驱使 revolution n. 革命，旋转，转数 vaporize vt.

17、 （使）蒸发 port n. 端口 seal vi. 盖印，封闭，猎海豹 volume n. 体积，容量，音量,New words he did it out of _. 10.Is there an extra _?,convert,internal,transmitted,impulse,charge,Section II,Reading,Revise and translate. Translate the following sentences into Chinese.,Task 4:,1. The actions taking place in the engine cylinde

18、r can be classified into four stages, or strokes.,发动机汽缸内的工作过程可以分为四个过程或行程。,2. The mixture of air and vaporized gasoline is delivered to the cylinder by the fuel system and carburetor.,可燃混合气由燃料系统和化油器运送到汽缸。,Section II,Reading,Revise and translate. Translate the following sentences into Chinese.,Task 4:

19、,3. When the airfuel mixture is compressed, not only does the pressure in the cylinder go up, but the temperature of the mixture also increases.,当油气混合燃料被压缩时，不仅汽缸里的压力上升，可燃混合气的温度也随之 增加了。,4. As the piston reaches TDC on the compression stroke, an electric spark is produced at the spark plug.,当活塞到达压缩行程的

20、上止点时，火花塞产生电火花。,Section II,Reading,Revise and translate. Translate the following sentences into Chinese.,Task 4:,5. This four- stroke- cycle of piston within the cylinder is repeated time and again to put the vehicle forward.,汽缸活塞的四个冲程不断重复，推动着汽车前进。,Section III,Grammar,Compound Sentences,并列句有两个或两个以上互不

21、依从的主谓结构，这些主谓结构之间的关系是并列的、对等的。在并列句中，要使两个或几个主谓结构连接在一起，就要用并列连词。并列连词用来连接平行对等（即互不从属）的分句，按其表示的不同意思有下面几种:,Section III,Grammar,Section III,Grammar,Read the following sentences and judge whether they are simple sentences, or compound sentences.,Task 1:,1. The students are studying because they have a test tom

22、orrow.,compound sentence,2. I tried to speak Spanish, and my friend tried to speak English.,compound sentence,Section III,Grammar,Read the following sentences and judge whether they are simple sentences, or compound sentences.,Task 1:,3. Jane and Maria went to the movies after they finished studying

23、.,simple sentence,4. Alex played football, so Maria went shopping.,compound sentence,Section III,Grammar,Read the following sentences and judge whether they are simple sentences, or compound sentences.,Task 1:,5. Alicia goes to the library and studies every day.,simple sentence,Section III,Grammar,T

24、ranslate the following sentences into English.,Task 2:,1. 他不知道你的地址，我也不知道。,There was an auto exhibition in this city yesterday.,2. 别骂人，因为我讨厌骂人。,There have been great changes in Chinas auto industry in the past twenty years.,Section III,Grammar,Translate the following sentences into English.,Task 2:,3

25、. 他们中有些人受伤了，但大部分人没受伤。,It was too late for there to be any buses.,4. 孩子们可以和我们一起去，或待在家里。,There are four parts of a cars basic structure, the engine, the chassis, the car body and the electric system.,Section III,Grammar,Translate the following sentences into English.,Task 2:,5. 他们想住在城里，而我们宁可住在乡下。,Ther

26、e must be something wrong with the car.,Section IV,Comprehensive Practice,concise a. 简明的，简要的 informative a. 供给消息的，见闻广博的 courteous a. 有礼貌的,New words “C” is the lowest. The traction ratingan indicator of how well the tyre is capable of stopping on wet pavement. “A” is the highest rating; “C” is the lo

27、west. The tread-wear ratinga comparative rating for the useful life of the tyres tread. A tyre with a tread-wear rating of 200, for example, could be expected to last twice as long as one with a rating of 100. Tread- wear grades typically range between 60 and 600 in 20- point increments. It is impor

28、tant to consider that this is a relative indicator, and the actual life of a tyres tread will be affected by quality of road surfaces, type of driving, correct tyre inflation, proper wheel alignment and other variable factors. In other words, dont think that a tread-wear rating of 100 means a 30,000

29、 mile tyre.,UNIT 3,Electrical System,Content,Section I Listening and Speaking,Section II Reading,Section III Grammar,Section IV Comprehensive Practice,Section V Self-Evaluation,Section VI Enlarge Your Vision,UNIT 3,Electrical System,Learning to know:,1. the basic structure of electrical system of a

30、car; 2. functions of electrical system of a car; 3. useful words and expressions about the electrical system.,Learning to do:,1. distinguish each component of electrical system with pictures ; 2. practice some working tasks in English in auto industry; 3.give a presentation about electrical system.,

31、Section I,Listening and Speaking,distributor n. 分电器 battery n. 蓄电池 flywheel n. 飞轮,New words other special vehicles have some other special devices. Car body also includes these devices like doors, windows, chairs, external or internal gadgets, and other accessories.,Section II,Reading,Now lets go in

32、to a little more detail. The main component that everyone is aware of and has probably had changed out a few times during the life of their car is the battery. The battery stores the power necessary for starting the car. The batterys stored energy also runs the auxiliary apparatus such as the radio,

33、 clock and car alarm when the engine is not running. A battery consists of six cells that are stacked with positive and negative lead plates. These plates are separated by insulators and immersed in electrolyte, a combination of water and sulfuric acid. These six cells produce and store the electric

34、al energy needed for the car. The alternator produces the electricity used to maintain the stored charge created by the battery. This helps to run all of the electrical devices such as the ignition and engine controls. The alternator is driven by a belt connected to the engine and produces an AC pow

35、er which is then converted to DC power. Another major component of a cars electrical system is the starter. It is generally only used a few times a day but is the biggest consumer of power in the whole system plus critical for your cars operation. The starter works by turning the engines crankshaft

36、via the flywheel thus starting the combustion process.,Section II,Reading,Once the combustion process has started, it creates compression within the cylinders. From this procedure voltage to the starter is supplied by the battery and administered by the solenoid, or relay. The ignition switch contro

37、ls the starter solenoid which in turn activates the starter motor. The starter motor cranks the engine over until it catches and the car starts. The fuse panel is the final main component of the electrical system. Every electrical component in your vehicle is connected to fuse box by wires or wiring

38、 harnesses. The fuse box is generally located near the kick panel of the drivers side or in the glove box. Inside of the fuse panel there are, as you would guess, many fuses. These fuses protect your car from short circuits and/or power overloads that could possibly cause major damage or even a fire

39、. When a momentary overload occurs a fuse might blow. When this happens it needs to be replaced. There you have it, your automobiles electrical system in a nutshell. It is not really a system of wires as you would first think, though they are involved, but of major components such as the battery and

40、 starter. You now should be able to understand not only how the whole system works but what it means when your mechanic says the alternator is not working. Being able to converse with a mechanic and understand what he is saying is indeed a great accomplishment.,Section II,Reading,necessitate vt. 需要

41、solenoid n. 螺线形电导管 generator n. 发电机，发生器 voltage n. 电压 volt n. 伏特 alternator n. 发电机 apparatus n. 装置 cell n. 电池 lead n. 铅 insulator n. 绝缘体，绝热器 immerse vt. 浸，陷入 electrolyte n. 电解物，电解质，电解液 sulfuric a. 化 硫黄的，含多量硫黄的 involved a. 所包含的（形式复杂的） be stacked with 堆满,New words 2. functions of electrical system of

42、a car; 3. useful words and expressions about the electrical system.,Learning to do:,1. distinguish each component of electrical system with pictures ; 2. practice some working tasks in English in auto industry; 3.give a presentation about electrical system.,Section I,Listening and Speaking,distribut

43、or n. 分电器 battery n. 蓄电池 flywheel n. 飞轮,New words other special vehicles have some other special devices. Car body also includes these devices like doors, windows, chairs, external or internal gadgets, and other accessories.,Section II,Reading,Now lets go into a little more detail. The main componen

44、t that everyone is aware of and has probably had changed out a few times during the life of their car is the battery. The battery stores the power necessary for starting the car. The batterys stored energy also runs the auxiliary apparatus such as the radio, clock and car alarm when the engine is no

45、t running. A battery consists of six cells that are stacked with positive and negative lead plates. These plates are separated by insulators and immersed in electrolyte, a combination of water and sulfuric acid. These six cells produce and store the electrical energy needed for the car. The alternat

46、or produces the electricity used to maintain the stored charge created by the battery. This helps to run all of the electrical devices such as the ignition and engine controls. The alternator is driven by a belt connected to the engine and produces an AC power which is then converted to DC power. An

47、other major component of a cars electrical system is the starter. It is generally only used a few times a day but is the biggest consumer of power in the whole system plus critical for your cars operation. The starter works by turning the engines crankshaft via the flywheel thus starting the combust

48、ion process.,Section II,Reading,Once the combustion process has started, it creates compression within the cylinders. From this procedure voltage to the starter is supplied by the battery and administered by the solenoid, or relay. The ignition switch controls the starter solenoid which in turn acti

49、vates the starter motor. The starter motor cranks the engine over until it catches and the car starts. The fuse panel is the final main component of the electrical system. Every electrical component in your vehicle is connected to fuse box by wires or wiring harnesses. The fuse box is generally located near the kick panel of the drivers side or in the glove box. Inside of the fuse panel there are, as you would guess, many fuses. These fuses protect your car from short circuits and/or power overloads that could possibly