【浙江版】2013年高中英语人教版必修二《Unit3computers》Warmingup课件.ppt

Computers;The development of computers;Objective;我们在此处增加本课时重点单词和短语表达部分, 旨在帮助学生在上课前对早读学习的单词及短语进行复习回顾，从而加深记忆。 ★ 用一分钟时间对单词进行复习，使学 生在新课学习中没有单词障碍。 ★ 通过朗读，使学生熟练掌握单词的正 确发音。 ★ 所呈现单词均出自课本单词表中的词 汇。;Words review;A toy?;A computer is a machine which keeps knowledge in its memory and does work on that knowledge. This knowledge is kept in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak. These computers can be used for voice mail. ;I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now. Do you know who I am?;I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because I’m small enough for you to take me with you. Do you know who I am?;PDA Personal Digital Assistant;I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?;I am very big. Scientists use me to solve some mathematical problems. ;robot;PC Personal Computer;1. They can be used for calculating. 2. They can deal with maths problems. 3. They are our friends. 4. They are useful and helpful.;Can you give us the English names of a computer components (组件)? Tips: 1. We can use a computer to … 2. It is made up of some parts, such as …;keyboard 键盘;main board;floppy disk;printer;screen keyboard mouse monitor DVD-ROM hard disk;PDA;高速超导计算机 ;Do you know in what ways computers are used today? Work out a list and compare it with your partner.;search for …;listen to music;send emails to friends;buy things online;draw pictures;use a computer for school work;Besides computer, what else can we get information from?;Have the computer and Internet become part of your life?;Homework;Thank you!