Lesson12上网冲浪.ppt

英特网简介 上网冲浪 WWW 浏览器浏览网页 电子邮件 有哪些信誉好的足球投注网站信息 网上视听 网络游戏 网上聊天交友 网上炒股理财 网上交易 论坛和新闻组 网上博客 文件上传下载 网络安全 Internet is a worldwide network of computer networks. 英特网是一个世界性的计算机网络互联网络。 It is familiar to today’s people. 现今的人们对它熟悉。 It can be comprehended both in the terms of hardware and in the terms of the services it provides. 它包含了硬件和它所提供的服务两个术语。 Everyday we use it to do a lot of things. 每天我们用它做很多的事情。 We can say that it brings a revolution to our daily life. 我们说它给我们的日常生活带来革命。 The services that the Internet brings to us include the following subjects: 为我们带来的服务包括以下几项： E-mail， the electronic mail is much more convenient than the typical letter. 伊妹儿，电子邮件比传统的信件更方便。 Nearly everyone has his or her own e-mail address. 几乎每个人都有他（她）个人的电子地址。 World Wide Web， the WWW brings a lot of resources to us. 万维网（WWW）给我们带来很多资源。 The importance of it is needless to say. 它的重要性不用多说。 We can search so much information that there is an interesting saying that goes “there is nothing we cannot search，only something can’t think out” ，which is very popular with students. 我们可以有哪些信誉好的足球投注网站到如此多的信息以至于在学生中流行着这样一句有趣的谚语：没有搜不到，只有想不到。 FTP， the file transfer protocol focuses its eyes on document services. FTP ，文件传输协议的重点着眼于文件服务。 BBS， the Bulletin Board System is an electronic information system. BBS，公告板系统是一个电子信息系统。 You can put your own subject on it， also you can get a lot of useful information from the interesting subjects. 你可以发表话题在上面，也可以从一些有趣的话题中得到很多有用的信息。 Besides the services we mentioned above， there are lots other services. 除了我们提到的以上的服务之外，还有很多其他的服务。 So we can say that surfing on the Internet is not only interesting， but also useful. 所以我们可以说网上冲浪不仅有趣而且有用。 However， there is another problem we should put our emphasis on is safety of surfing on the Internet. 然而，还有另一个值得我们注意的问题是上网冲浪的安全性。 With the development of Internet， a lot of problems have emerged. 随着英特网的发展，已经浮现很多问题。 Some viruses may get into your computer, thus make some changes to your system. 一些病毒可以侵入你的计算机，这样就会改变你的系统。 If unfortunately you find these viruses， maybe your computer can’t work