Unit 3 The world online1. Do you know in what way we can keep in touch with each other?Brainstorming2.postcards3.letters4.Telephones and mobile phones5.telegraphsfaxes6.computers7.Discussion Which one do you prefer to use to keep in touch with your friends? Why?postcardtelephone computer letter9.What is the Internet? The Internet , also called the Net, is a collection of computers connected in a worldwide network.10.What do we use the Internet for?Functions of the InternetSearch for informationKeep in touch with Do online shoppingother functions11.12.Some famous search enginesThis is a program that lets you search a website or the whole Internet to find information.13.Search for information on the InternetTo search for certain information on the Internet, first of all, you must have access to the Internet and your computer must have certain program for browsing the websites. And we call these programs browsers.To look at information without a specific goal.It includes all the pages at an address that make up the site.14.A picture of a web pageBack arrowRefreshHome pageWeb addressLinkClick on this Click on this button to return button to return to a page that to a page that you saw earlier.you saw earlier.When the information you When the information you are trying to see does not are trying to see does not appear quickly, or the web appear quickly, or the web page has a problem, you page has a problem, you can click on the refresh can click on the refresh button and the button and the information may appear information may appear again without a problem.again without a problem.This is the first This is the first page of a website, page of a website, with links to all with links to all the other pages.the other pages.When you want When you want to move to a new to move to a new web page, you web page, you can click on this.can click on this.Minimize / Maximize / Close15. What do you think the most important benefit of the Internet is? Do you think there are any negative things about the Internet?16. Shop for the top brands at the best prices all over the world17.Make a comparisonTraditional shoppingAdvantagesDisadvantagesCheaper.Easy and convenient to compare a product with other online shops.Pay by credit card.Not reliable.Doubtful safety of payment.Some ads lie.Somewhat expensive.You have to walk to other stores to compare the same product.You can examine the product.100% safety of payment.The salesmen can not easily cheat you.18.19.20.22.browse search download uploadrefreshback arrow minimizemaximizeclose浏览浏览搜查查找搜查查找下载下载上传上传刷新刷新后退键后退键最小化最小化最大化最大化关闭关闭click点击点击23.search engineweb addresshome pagewww搜索引擎搜索引擎网址网址主页主页万维网万维网,互联网互联网websitewebpagelinkvirushacker网站网站网页网页链接链接病毒病毒黑客黑客24.1. You see a set of keys for typing. keyboard 2. You use it to store information. It can store more information than a floppy disk. hard disk3. You see words and pictures on it. screen 26.4. It is a machine that puts words and pictures onto paper. printer 5. It is a small device moved by hand. It controls the cursor on the screen. mouse 6. It is a part of the computer where the sound comes out. speaker 27.7. These are sets of instructions that control your computer. program 8. It is a short, movable line on the screen. cursor 9. It is a small square of plastic on which a computer mouse moves. mouse mat 28.29.What are they?mouse30.mouse mat 31.Printer 32.Speaker33.Keyboard and mouse35.Screen 36.Computer and the Internet coder command computer language data processing digital computer display unit inline processing working storage 计算机语言计算机语言工作存储器工作存储器数据处理数据处理 数字计算机数字计算机指令指令,命令命令 编码员编码员,编码器编码器显示装置显示装置内处理内处理40.网络语言汇集（一）趣味数字1314 生一世生一世1314920 一生一世就爱你一生一世就爱你1372 厢情愿厢情愿1414意思意思意思意思147 一世情一世情1573 一往情深一往情深1711 一心一意一心一意1798 一起走吧一起走吧 530我想你我想你687对不起对不起8384 不三不四不三不四42.1. laugh out loud2. for your information3. keep in touch4. be right back5. by the way6. thanks again7. youre welcome8. thanks in advance9. see you10. as soon as possibleBTW LOL KIT BRB ASAPTA TIA CU YW FYI网络语言汇集（二）字符表意43.Abbreviations used in Internet chat roomsPKICLZMe2MPJPFPMPPLZSJBVSVIP比拼，单挑比拼，单挑我明白我明白楼主楼主我也是我也是马屁精马屁精佩服佩服拍马屁拍马屁请请神经病神经病对决对决嘉宾，重量级人物嘉宾，重量级人物44.网络语言汇集（三）表情符号_ 男士的笑脸。男士的笑脸。. 女孩子的可爱的笑脸。女孩子的可爱的笑脸。o 高兴、大笑。高兴、大笑。_挤眉弄眼。挤眉弄眼。_ 兴奋。兴奋。(_)/男士高呼万岁时的笑脸。男士高呼万岁时的笑脸。.女生高兴得笑翻时甩着辫子。女生高兴得笑翻时甩着辫子。=-= 脸红什么脸红什么? 45.