中职计算机专业英语教学设计Lesson 3 Hardware
Lesson 3 Hardware 一、教学目标1.了解计算机硬件的相关知识 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硬件的相关信息。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
Hardware is a word to describe computer devices. It refers to the actual machinery that makes up computer system—the CPU, input devices, output devices and storage devices. Some parts can be seen, and some parts cannot be seen from the outside. With a computer, hardware is the physical part—the stuff you can touch, feel in your hand. Hardware performs four major functions which are input, processing, output and storage. Input devices of a computer usually include keyboard, mouse,modemand scanner which provide a way of communicating with a computer. They
translate data that we can understand into a form that a computer can process. The processor which is often called CPU (Central Processing Unit，中央处理器 is the main chip in a computer and is also the most important part of a computer. It can be described as the “brain” of a computer. It processes instructions and manages the flow of information through a computer system. Actually, it is quite small in size. This part is put inside the mainframe. No matter how powerful CPU is, people can never get the information they want without an output device because the data a computer processes cannot be understood by human beings. Output devices can translate the data into the information we can understand. They enable a computer to communicate with us. The outstanding output device is a monitor which can be found in every computer. Another ordinary output device is a printer. Besides the functions of input, processing and output, a computer also has another excellent function—storage. The storage devices hold information and data when the computer is not using them. There are several kinds of storage devices: a hard disk drive, floppy disks, and CDROMs. Words and Expressions
Notes 1. It refers to the actual machinery that make up computer system—the CPU, input devices, output devices and storage devices. 它指的是构成计算机系统的真实的机器——中央处理器， 输入系统，输出系统和存储系统。
that 引导主语从句，修饰the actual machinery,例如：
It is the sun that makes the moon bright. 是太阳的光使月亮变得明亮。 2. Hardware performs four major functions which are input, processing, output and storage. 硬件执行输入、处理、输出和存储四大功能。
which 引导定语从句， 修饰前面的“four major functions”。
3. Input devices of a computer usually include keyboard, mouse, modem and scanner which provide a way of communicating with a computer. 计算机输入系统通常包括键盘、鼠标、调制解调器和扫描仪。人们通过这些设备与电脑交流。
include 是“包含，包括”的意思，类似的表达还有：be composed of, comprise, consist of, etc.。
但be composed of 用于被动语态， consist of 用于主动语态， 例如： The United States is composed of 50 states. 美国有50个州组成。 A week consists of seven days. 一星期有7天。
4. They translate data that we can understand into a form that a computer can process. 它们把我们能理解的数据转换成电脑能处理的数据。
两个“that”分别修饰的是“ the data we can understand 