Internet即“因特网”，Internet本身起源于

Presentation on theme: "Internet即“因特网”，Internet本身起源于"— Presentation transcript:

1 Internet即“因特网”，Internet本身起源于
1969年的一个广域网计划，当时美国国防部的高级研究计划署（ARPA）为了能使一些异地计算机相互共享数据，以利其开展研究工作，于是以一定的方式将这些计算机连接起来，这就形成了Internet的前身ARPANET。ARPANET网成功的主要原因是因为它使用了TCP/IP标准网络协议，TCP/IP网络协议是Internet采用的一种标准网络协议。1986年，美国国家科学基金会在政府的协助下，用TCP/IP协议建立了NSFNET网络，并与1989年该名为Internet向公众开放，从此，Internet便在全球各地迅速普及开来。1991年，很多商业机构开始把自己的局域网连接到Internet上，进一步扩大了Internet的应用范围。1993年9月15日，美国政府正式提出了“NII行动计划”，打算建设国家信息基础设施，这个文件在世界范围内引起了极大的震动，从某种意义上来讲，这是Internet发展的一个里程碑。1995年，原有的NSFNET正式宣布停运，取而代之的是一个有Sprint, MIC等电信公司分摊经营的Internet骨干网络，Internet从此正式对社会共总开放。目前，Internet拥有全球约3亿-5亿的拥护，而且这个数字还在以每月10%的速度增长。Internet连接着数万个计算机网络，平均每天还有数以亿计的人使用Internet，平均每天新增加数千家网站。人类正不可避免地进入一个网络社会。

2 Unit 13 The Internet 经贸部英语组:王莹

3 Questions: 1.Do you enjoy getting on line?
2.What do you do when you get on it? You… 3.What is the internet?

4 The Internet is a wonderful
information network. It is a network enables people to communicate easily and quickly. It is a network which connects Almost all computers in the world.

5 Questions: What is the Internet? what does the Internet enable us to do? How many users of the Internet are there in the world?

6

7 Time is up !

8 Fill in the blanks according to the text.
1. The Internet enables ______________ to “inter-communicate”. 2. Wireless systems can be connected to ________________. 3. More and more _______________ will use the internet to do business. 4. An Internet Service Provider is necessary for ___________________________________________ who wants to connect with the internet. 5. The number of Internet users who are _______________ is growing faster than other users. protocols the internet companies either an individual or a company individuals

9 Paragraph One: 1.thousands of 数以千计的
eg. It took hundreds of thousands of people ten years to build the Great Wall. 2. think of… as, regard… as 把．．．看作．．． eg. SARS is thought of as one of the most serious challenges man has ever met. 3.TCP/IP

10 is certain to 一定会,必将(表示对 未来的非常肯定推测) be sure to, will+现在完成时
Paragraph Two: is certain to 一定会,必将(表示对 　　　　　　　未来的非常肯定推测) 　be sure to, will+现在完成时 eg. We are sure to win the football match. 2. so as to +动词　表示目的(不放句首） 　in order to （可句首，可句中） eg. He raised his voice so as to let all of them hear him.

11 2. When connected,… 过去分词短语做 时间状语
Paragraph Three: 1. an Internet Service Provider such as Sohu. 像搜狐这样的互联网服务商 Yahoo Sina Aol 2. When connected,… 过去分词短语做 时间状语 3. even if 常引导让步状语　“即使，哪怕” eg. Even if he is poor, she loves him.

12 Paragraph Four: as many as “高达，多达”　强调其多 eg. He has as many as five cars.

13 Practice: think of as We ________________ Mr.Wang ________ our close
friend. 2. This kind of goods ____________________________ meet great popularity at your ends. is certain to 3. __________________________ have a better understanding, the teacher had a talk with her. In order to

14 Conclusion & discussion
What is the Internet? What can it do for us? How do we connect our personal computers to it? How many Internet users are there in the world?

15 Homework: Write a composition includes Answers to the questions
before.

16 Bye!

17 Strike up a conversation Hello!

18 Play games

19 Play games

20 Get information from web page.

21

22

23 The internet is a network
of networks or a set of protocols that enable various networks to communicate with each other.

24 The Internet enables us to
do many things. For example, we can share information with others, discuss topics of interest, research various subjects, or conduct commerce.

25 According to the text, there are as many as 40 million users. But in reality there are now more than 100 million users.