College English Listening and Speaking Course 4Unit 4听力原文完整版.docx

1、College English Listening and Speaking Course 4 Unit 4听力原文完整版Unit 4 Explaining ProcessesPart A Pre-listening Task Additional questions for discussion1. Different teaching aids are being used in classroom teaching. What are the advantages and disadvantages of using the OHP in the classrooms?An OHP ma

2、y help make teaching and learning more effective. It can be used to show outlines, figures, charts, pictures, and photos to the students. It will save the teacher time for writing or drawing on the blackboard or whiteboard. It will enable the students, both in the front and at the back of the classr

3、oom, to see clearly what is presented. As the machine is used in normal room light, it wont affect the students ability to take notes.The bad thing about an OHP is that, when it breaks down in the middle of a lecture, it would cause a problem. The teacher may find it hard to continue his teaching wi

4、thout it if he has planned to depend on it to deliver his material. The students may end up wasting their time. 2. Do you like to use newly invented equipment in your work and study? Why or why not?A: Yes, I certainly do. As a student of industrial design, how can I not like new gadgets (小器具；新发明) an

5、d technology? Its always fun to try the latest designs and inventions - whether a piece of equipment for experiments, a communication tool, or something to hook up with a computer. In addition to the hardware, I also like to try out new software. When I do this, I may not only raise efficiency in my

6、 study, but also learn about new ideas that may be useful to my future work.B: No, Im afraid I dont. Im not much of a technology person and new equipment always scares me. I find it hard to figure out all the steps to take or all the buttons to push in order to operate a piece of equipment. If anyth

7、ing goes wrong in the process, I wont know how to deal with it.Part B Listening Tasks IHow to Use an OHPM: I want to use the overhead projector for my presentation. Could you show me how to use it?W: OK, let me show you. Just watch what I do. I. Ill talk you through the procedure.M: Thanks. W: Right

8、, well. First of all, you put the OHP on the table here, about 2 meters from the wall or the screen. Er.do you have a screen?M: Er.no. I thought Id just use the wall.W: Oh, er.well, a screens better, but I suppose this wall will be all right. It is sort of white. Anyway, lets try it. So, the next th

9、ing you have to do is press these buttons in and lift this part up until it snaps into place. M: I see.W: And then turn it round so the head is facing towards the screen, I mean the wall, and now we can plug it in. M: Right, and you switch it on?W: Yeah. Then I press the switch here on the front. M:

10、 Right. W: There! And the light should come on.M: Right, OK.W: Yeah, there we are. So, you just place your transparency here on the glass.M: OK, there, oh!W: Oh, no! No, the other way up.M: Oh yes, of course.W: Thats right, yeah. And to raise or lower the image you move this flap up or down. There,

11、thats better.M: Right, OK.W: And finally, to focus the image you turn this wheel to make it sharp. There we are, thats not too bad.M: Oh, thats great, yeah. OK, thanks.W: Oh, one more thing: whatever you do, dont keep switching it on and off. Im going to switch it off now. Now, when you use it in yo

12、ur presentation, you should leave it switched on, with a piece of paper over the glass.M: Right, I.er. I dont understand why you have to leave it on.W: Well, the reason why you have to do that is that you dont want the bulb to fail. The bulb fails easily if the machine is on and off frequently. If i

13、t does, youll have to replace the bulb, which will be very hot and you may not have a spare anyway. So thats about it. Any questions?M: Erm.no, that seems all very clear. Thank you very much. W: Youre welcome. Oh, and I really do think you need to get a screen, by the way. The picture would be much

14、brighter than on that wall, you know.M: Oh, OK. Well, Ill ask Jim if hes got one.W: Oh, good idea! And make sure he shows you how to put it up! M: I will. Thanks again.Listen to the conversation. Write down the steps in operating the OHP.Step 1: Put the OHP on the table. Step 2: Press the buttons in

15、 and lift this part up until it snaps into place.Step 3: Turn the OHP round so the head is facing towards the screen or a white wall.Step 4: Plug it inStep 5: Switch it on. Step 6: Place the transparency on the stage.Step 7: Move the flap up or down to raise or lower the image.Step 8: Turn the wheel

16、 to make the image sharp.Speaking Task I:What do you think of the text youve just heard? Exchange views with your partner. Reflections:Comment on the conversation you have just heard. Youve caught a glimpse of how modern equipment is entering our life. Exchange views with your partner. You may menti

17、on the following points in your discussion. 1. the mans problem and his eagerness to learn2. the womans expertise and her genuine concern for the mans problem3. a correct attitude toward something new to youWith the rapid growth of modern technology, many new and more advanced types of equipment are

18、 finding their way into classrooms, offices, factories, and even homes, which greatly increases the efficiency of our work. In the conversation, the man is going to give a presentation. If he uses the overhead projector, he will certainly be able to make a better presentation, but the problem is he

19、doesnt know how to operate the machine. A lot of people in his situation would probably give up and just do without the projector. But the man is not afraid to admit his ignorance and seek help from someone else. So in the end he is rewarded with mastering the skill of operating the machine. The wom

20、an too is worthy of our praise. As someone who has the expertise, she doesnt assume an air of superiority but shows instead a genuine concern for the mans problem. She is patient and considerate, demonstrating to the man how to use the equipment step by step and giving him cautions concerning some v

21、ulnerable part - the bulb - of the machine. As youth of the 21st century, we need to constantly update our knowledge and skills. Mutual help between friends or co-workers is an effective way to improve ourselves.Speaking Tasks II:Listen to a sample conversation in this part, and carry on similar con

22、versations with your partner.Now you have a chance to practice your skills in explaining processes to others. Use the sample as your model to carry out similar conversations with your partner according to the topics. Take turns to be the expert and the one that wants to know how to perform a certain

23、 task.A : I want to set up a screen saver for my computer. Can you show me how to do it?B : Sure. Its just a few clicks away. Let me show you. First, you right-click on any free part of your desktop so that a menu appears. Then you select Properties at the bottom of the menu and click on it. Then.A:

24、 Oh, let me try it. First I right-click on the desktop and then choose Properties. B : Yes. And now you have a dialogue box.A : What do I do now?B : You can click the Screen Saver tab on the top, and use the pull-down menu in the Screen Saver tab here to choose the screen saver you like. For example

25、, lets try this one. You can click the Preview button and youll see it right away.A : Oh, right.B : Now you move your mouse and the Preview will disappear. You can also set the Wait Period. A : What does that mean?B : Well, if you set the Wait Period at five minutes, the screen saver will kick in wh

26、en your system is untouched for 5 minutes.A : I see. B : And finally you click on the Apply button here and your screen saver is set.A : Thats great. Thank you so much. B : You can also download a screen saver from the Internet. There are thousands of free screen savers on the Internet, you know. Yo

27、u can download one and install it on your computer. Then you just repeat the steps Ive shown you to set it up.A : Really? I may ask you for help again if I have problems.B : Anytime.Part C Additional Listening How to Send an E-mailM: I would like to send an e-mail to a friend of mine. Could you tell

28、 me how to do it?W: Certainly. First, you choose the e-mail program on your computer and click New Message.M: All right.W: OK? Well, then you start typing the name of the recipient. The program remembers the name and completes the e-mail address. Well, if not, you look up the name in the address boo

29、k or contact list. OK? Well, if you want other people to get copies of the same message, you send them CCs, which are copies of the message. OK? Then you press Return on the keyboard and then you type the subject of the message. Now, theres no need to put the date because that goes in automatically

30、when you send the message, together with the time. OK?M: Oh, yeah.W: Well, then you press Return again and start writing the message. Now, if you make a mistake, you just press Backspace to delete the previous letter or word and then type it again correctly.M: I see. W: Now, when youve finished, you

31、 read the whole message through to make sure it looks right and contains the right information. Now, if you decide you want to change sentences around, you can copy sentences and paste them in other places.M: And.er.er.how about spelling and punctuation, er.that can be corrected automatically, cant

32、it?W: Well, yes and no. You can run your spell checker and that may bring up some mis-typings and things like that. But it definitely wont catch them all, so you must read it through to check your spelling, too. And check your punctuation at the same time. Now if you notice a misspelt word, or if you want to change a word or something like that, double-click on the word and type the new word over it.M: Fine. Th