高级视听说Unit_2-Chapter_4_new

高级视听说Unit_2-Chapter_4_new

Advanced Viewing, Listening & Speaking

Unit 4 The Internet: How It Works

高级视听说Unit_2-Chapter_4_new

Unit 4 The Internet: How It Works

I.

Pre-listening Pre-

II. Listening III. Post-listening PostHomework: Listening Factoid #1 & Listening Factoid #2

高级视听说Unit_2-Chapter_4_new

I. Pre-listening:

A. Listening Preparation B. Words Learning Preview of Vocabulary in the Text C. Rhetorical Listening Cues

高级视听说Unit_2-Chapter_4_new

A. Listening Preparation

Millions of people use the Internet everyday to send and receive e-mail messages, to find information on the World Wide Web, or to download files, such as games, music files or movie clips. What is the Internet and how does it work? How do e-mail messages get from your computer to the computer of the person you send them to? How do Web pages travel to your computer? How do files you download reach your computer? We are going to talk about Internet in Unit 4. How much do you know about hi-tech like Internet? How many words do you know in the following list?

高级视听说Unit_2-Chapter_4_new

Internet DiscussionGood points:To get information To entertainment To get a job To make the world small and wonderful to buy sth To send email To make a friend tv To kill the time To chat To ask help To education To contact Exchange Adjust mood To be informed Electronic banks To plan

高级视听说Unit_2-Chapter_4_new

Internet DiscussionShortcomings: To harm your eyes To copy homework To harm your health To harm our skin Bad information Too relying on it To waste time and money Games False world Virus –Trojan illegal companiescrimes Children Criminals Cheating ads Cheat Handwriting Religious ads

高级视听说Unit_2-Chapter_4_new

Words Learning

or

email address/web address Download/browser modem/program email/viruses link/mouse/click data/floppy disk Hard disks/CD-ROM Cyberspace/disk drives Processor/printer Scanner/hardware discussion forum domain name/E-commerce Email (or e-mail) file/folders/search engine operating system the computer's memory/icon information super highway the world wide web Email/internet café Internet Explorer

message board bulletin board MP3/network/Offline logged off/Online logged on/password Processor/user id webpage world wide web Webcam/website/homepage server/window/ www: world wide web zip/unzip/download information superhighway Information Age Digital/optical fiber Internet/network satellites/cable/protocol IT/artificial intelligence audio and video Continue terminal/database

高级视听说Unit_2-Chapter_4_new

B. Preview of Vocabulary in the Text: P23to link together into a gigantic network to equip with software monthly charge in turn hierarchy to break down route destination to imagine (因特网服务供应商，通常为大 因特网服务供应商， 因特网服务供应商 postal agent 型企业和基于Internet 的商业 ), 型企业和基于 ， Internet Service Provider (ISP) 如MSN。 。 Pyramid a piece of electronic equipment that makes sending messages between different computers Router or between different networks easier and faster. Antivirus software

高级视听说Unit_2-Chapter_4_new

C. Rhetorical Listening Cues

In this talk, the speaker explains how the Internet works, that is, how inf

ormation travels over the Internet. The speaker uses words and phrases to show the order, or sequence, of how information travels over the Internet: These are words such as first, then, when, after, and finally. The speaker also uses an analogy, or comparison, to help explain the process. Some common analogies you might be familiar with are: The heart is like a pump. The Internet is like an information highway. Learning to drive is like learning to ride a bicycle.

高级视听说Unit_2-Chapter_4_new

II. Listening

A. Initial Listening B. Mental Rehearsal & Review of the Talk C. Consolidation

高级视听说Unit_2-Chapter_4_new

A. Initial Listening

Now let's listen to a talk about what the Internet is and how it works.

高级视听说Unit_2-Chapter_4_new

Key words Computer Network ISP Routers

高级视听说Unit_2-Chapter_4_new

B. Mental Rehearsal & Review of the Talk

Let's listen to the talk once more. This time the description of the Internet and how it works will be given in message units. Please repeat each of the sentences or phrases to yourself silently as you hear it spoken. Remember, do not repeat the units out loud.

高级视听说Unit_2-Chapter_4_new

C. Consolidation

You will now hear the talk given once again. This time as you listen, take notes on what you hear.

高级视听说Unit_2-Chapter_4_new

III. Post-listening

A. The Comprehension Check B. The Listening Expansion Task 1 Connecting the Process Task 2 A Dictation: How to Be a Courteous E-mail Correspondent.

高级视听说Unit_2-Chapter_4_new

A. The Comprehension Check

1. Recognizing Information and Checking AccuracyFor questions 1-4, you will hear multiple-choice questions about the information presented in the talk. Listen to each question and decide whether (a), (b), (c), or (d) is the best answer to the question.

高级视听说Unit_2-Chapter_4_new

1. Recognizing Information and Checking Accuracy1. a. hundreds of ISPs What is the Internet? b. tiny packets of information c. individuals, organizations, and companies d. a gigantic network of connected computers 2. a. an ISP What is a router? b. a postal agent c. a specialized computer d. communication software 3. a. a book What is carried on every tiny packet of information that b. software travels through the Internet? c. a network d. its destination address 4. a. postcard What is a router compared b. postal agent to in the lecture? c. page of a book d. packet of information

高级视听说Unit_2-Chapter_4_new

For questions 5-7, you will hear statements about the Internet and how it works. If the statement is true, put a T on the line next to the number of the statement. If the statement is false, put an F on the line, and explain why the statement is false.

5. The Internet is controlled by one gigantic ISP. (F There is no one controlling network at the top.) 6. Routers can send the packets of information in one e-mail message over many different routes to their destination. (T) 7. The lecturer compares the tiny packets of information that travel through the Internet to electronic postcards. (T)

高级视听说Unit_2-Chapter_4_new

2. Using and Expanding on the Information in the Talk

a. Recapping the Information from Your Notes. Use your notes to recap the information you learned about how the information in e-mail messages, Web pages, a

nd downloaded files travel over the Internet.

高级视听说Unit_2-Chapter_4_new

2. Using and Expanding on the Information in the Talk

b. Expanding on the Information in the Talk. Discuss with a classmate why you agree (or do not agree) with the following statements.

1. The Internet is the best place to find information on almost everything. 2. Information on the Internet is usually quite accurate. 3. The government needs to control the kind of information that can be on the Internet. Every student should have a laptop computer and an Internet connection.

高级视听说Unit_2-Chapter_4_new

B. Task 1--Connecting the ProcessViruses, worms, Trojans! It seems that every week there is something in the news about these invaders that make your computer "sick.“ These invaders often do very harmful things, such as delete files, access your personal data, or use your computer to attack other computers. Viruses can spread and infect other computers very quickly. It's possible for a virus to go around the world in minutes. There are several things you can do to protect your computer equipment against these invaders, but one of the most important is to have good antivirus software. If you use the Internet at all, or if you ever borrow a floppy disk from anyone, you almost certainly need to have antivirus software. Listen to a talk about how to choose the best antivirus software for you. Fill in the missing transitional cues.