Lesson 1 What Is a Computer?一、教学目标1.了解计算机的基础知识2.熟记单词3.阅读课外文章二、课时分配本项目共2个任务，安排3课时。
三、教学重点计算机已成为人们生活和工作中不可或缺的一部分。
本项目主要介绍电脑的相关信息。
熟记相关重点单词，与英语语法。
四、教学难点1.熟悉单词中文意思。
2.拓展课外阅读3.熟悉相关语法。
五、教学内容Since the technology is developing rapidly nowadays, nearly all people are familiar with computers. It has become an essential part of human life. Everyone is keen on it. Now let’s see what a computer is.It can store and process data and produce output results under the direction of a stored program of instructions in a very fast and accurate way. It can not only deal with letters, characters and figures but also sounds, images and information of other sorts. It is very convenient for people to deal with routine tasks and all kinds of dull figures by computerin a more enjoyable way. Computers are human’s friends and they are useful tools for people.The first computer in the history was named ENIAC (Electronic Numerical Integrator and Computer) in 1946. It was quite huge and expensive. Ordinary people cannot afford it. Later on, since the contribution of human being’s intelligence, computers are beco ming smaller and less expensive. Even ordinary people like you and me can afford it today.We can find various computers in the market today. People use computers in their daily life for studying, working or just for entertainment. The typical type of computer looks like a TV set. We call it desktop computer. You can find it in people’s offices, at homes or in net bars. This kind of computer is often called PC (Personal Computer). In recent years, they are gradually replaced by another type of computer which is called notebook computer or laptop computer. The latter one is much smaller and more expensive than the former one. However, it is more convenient because it is small enough to put into a briefcase.What we called computers are not just those we have mentioned. Many other types of computers exist around us such as those in washing machines and ATMs. Computers really do a lot of favor to our daily life. They make our life more colorful, convenient and comfortable.Words and ExpressionsNotes1. Since the technology is developing rapidly nowadays ... 由于当今科技发展迅速……since 在这里表示“由于”的意思，引导原因状语从句，例如：Since we are going to have our final exam, we should get well prepared. 由于快考试了，我们要做好充分的准备。
2． ... all people are familiar with computer. 所有的人都对计算机很熟悉。
be familiar with sth. 表示“对……熟悉”，例如：We are all familiar with Jay Chou. He is a famous pop star. 我们都熟悉周杰伦，他是个著名的流行歌手。
3． Everyone is keen on it. 人人都对它着迷。
be keen on sth./sb. 意思是“对……着迷”，例如：It is said that Sarah is very keen on cute dolls. 据说萨拉对可爱的玩偶非常着迷。
4. puters are becoming smaller and less expensive. ……计算机变得更小、更便宜了。
smaller 和 less expensive 都是比较级，比较级的表达方式有两种。
单音节的词的比较级或最高级直接在后面加“er”或“est”, 如:small—smaller —smallest；多音节的词的比较极和最高级不能直接在原单词上作变化，而是分别在前面加“more”或“most”，如：expensive—more expensive—most expensive。
5. The latter one is much smaller and more expensive than the former one. 后者比前者更小、更贵。
former 和latter 是代词，分别表示“前者”和“后者”。
在这个句子中分别代表桌上型电脑和笔记本电脑。
6．Computers really do a lot of favor to our daily life. 电脑确实在我们日常生活中帮了大忙。
do a favor to sb.意思是“帮……一个忙”，例如：The box is too heavy for me to carry. Can you do me a favor? 这个盒子太沉了我拿不动。
你能帮我个忙吗?7. They make our life more colorful, convenient and comfortable.它们使我们的生活变得丰富多彩,方便快捷且舒适。
colorful, convenient, comfortable三个词都是以c开头,这在英文中是一种特殊的修辞手法——押头韵。
这种方法常见于诗歌中的描写，使用这种修辞手法能使文章变得紧凑生动,朗朗上口。
1. Computer 小常识。
计算机系统的主要部件包括存储器、输入设备、处理器和输出设备。
中央处理器(CPU) 是所有计算机的核心部分。
一般的计算机的CPU主要由两部分构成: 算术/逻辑部分和控制部分。
存储器分为随机存储器(RAM) 和只读存储器(ROM)。
RAM 就是我们常说的计算机内存,是使用最多的一种存储类型。
ROM主要用来存储程序。
ROM比RAM速度要慢一些,因此,如果需要快速处理,可将ROM中的内容传送到RAM中去。
计算机由以下几个部分组成：mouse 鼠标keyboard 键盘monitor 显示器mainframe 主机hardware 硬件software 软件2．扩展词汇。
palmtop computer 掌上电脑component 元件，组件clipboard 剪贴板machine language 机器语言register 寄存器processor 处理器high speed cache memory 高速缓冲存储器disk drive 磁盘驱动器floppy disk 软盘Reading ComprehensionMicrocomputersFifteen years ago, most people had little to do with computers, at least directly. Of course, they filled out computerized(使计算机化) forms, took computerized tests, and paid computerized bills. But the real work with computers was handled by specialists programmers（程序员）, data entry clerks（数据输入员）, and computer operators（操作员）.Then microcomputers came along and changed everything. Today it is easy for nearly everybody to use a computer. People who use microcomputers are called end users. Now:Microcomputers(微型计算机） are common tools in all areas of life. Writers write, artists draw, engineers and scientists calculate（计算）—all on microcomputers. Students and business people do all this, and more.New forms of learning have developed. People who are homebound, who work odd hours, or who travel frequently may take courses on the Web. A college course need not fit within the usual time of a quarter or a semester.New ways to communicate, to find people with similar interests, and to buy goods are available(可得到的). All kinds of people are using electronic mail(电邮), electronic commerce（电子商务）, and the Internet to meet and to share ideas and products.Many interesting and practical uses for information technology have recently surfaced to make our personal lives richer and more entertaining. These applications range from recording video(录像) clips to creating personalized Web sites（个人网站）.What about you? How can information technology and microcomputers enhance your life?Questions1. What did people usually do relating to computers fifteen years ago?2. What do we call those who use microcomputers today?3. What can microcomputers be used for?4. There are many interesting uses for information technology. What are the applications of these technology?Lesson 1译文什么是电脑？由于当今科技发展迅速，几乎所有的人都对电脑很熟悉。