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.
less is more英文理解
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 computer in 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 becoming 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 Expressions
Notes
1. 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 Comprehension
Microcomputers
Fifteen 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:

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