unit3-computers--reading.课件.ppt

1、Unit 3 Computers Who Am I?,Guessing game,With the development of science and technology, many new things appear in human beings life.,Lets guess what they are:,1. With me you can watch different programmes just at home. Im a machine that has a screen with moving pictures and sounds. But watching me

2、too much is bad for your eyes.,TV set,Who Am I,2. I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kinds of me.,car,3. I am a machine which is a good helper in doing house work. I wash cl

3、othes for people. Who am I?,washing machine,4. A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number. Who am I?,telephone,5. It is a machine, which you can use to type your homework, draw pictures, play games, wa

4、tch movies, listen to music, communicate with your friends, gather information,computer,It is a kind of computer which can be taken conveniently like a notebook.,A laptop,What English words do you know about computers?,What is it in English?,mouse 鼠标,What is it in English?,CPU (central processing Un

5、it) 中央处理器,What is it in English?,Main board(主板),What is it in English?,Display / Monitor,显示器,computer,I,nternet,S,earch,K,eyboard,C,lick,E-,mail,B,log,B G,ill ates,E-,pal,搜索,键盘,点击,电子邮件,网友,博客,Who am I?,Reading,1.In the passage, “I” refers to _. 2.the topic sentence of each paragraph. Paragraph 1: par

6、agraph 2: paragraph 3: So the whole passage is mainly about _.,Task 1 Scanning(略读),a computer,Over time I have been changed quite a lot.,These changes only became possible as my memory improved.,Since the 1970s many new applications have been found for me.,Fast-reading,the development of computers.,

7、Task 2 Careful Reading( 细读),Read the passage more carefully and find more information about computers. Then fill in the two forms below.,The computer _ _ _ _ machine,1822,Alan Turing _ _ _ _ how computers could be made to work,Computers had _ _ _ _ a room.,1960s,First as _ _and then _ _ _ computers

8、were used in _ and _.,Computers connect people all over the world together as devoted _ and _.,A family of computers was connected by a_.,The _ machine was made by Charles Babbage.,began as a calculating,analytical,wrote a book about,grown as large as,a PC as a laptop,network,offices,homes,friends,h

9、elpers,From the above form, we can know that the text is written in an order of _,time,Lets listen and find more information about the development of computers. Listen and fill in the blanks.,Early days (the first paragraph),Name Function(功能),a 1._ machine,simplify difficult sums,an 2. _ machine,thi

10、nk 3._,a 4._ machine,solve difficult 5._ _,analytical,logically,universal,mathematical problems,calculating,network times (the 2nd and 3rd paragraph),6._,my memory,tubes,7._,transistors,small chips,since the 1970s 8._ have been found in many fields(领域).,9._; finance; 10. _; robots; mobile phones; 11

11、._; space rockets,applications,communication,trade,medical operations,It began as a _ machine in 1642 in France. In 1822 it was built as an _ machine. Then in 1936 Alan Turing wrote a book and built a _ machine. As time_ _, it was made smaller but its memory grew _ and _. In the 1960s they gave it a

12、 family connected by a _. Now people call it the Internet. It was used in _ and _ since the 1970s. Since its birth it has truly been built to help the _ _.,calculating,analytical,universal,went by,larger,larger,network,offices,homes,Test in class,Summary,human,race,What are advantages and disadvanta

13、ges of computers? How can we make use of it?,Should high school students surf the internet(上网)?,Discussion,Computer and Internet,type your letter,Play computer games,communicate with my friends.,search useful information,listen to music,watch movies,advantages we can communicate with friends listen

14、to the music see films & watch news play games do shopping save a lot of time do a lot of useful things,Disadvantages Some people especially the teenagers abandon (沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study . There is unhealthy informaion on the net. You may lose your private information. Some people use the computer wrongly.,Thank,you,for,your listening!,http:/www.99dyw.co/ 九九电影网 http:/www.99dyw.tv/ 九九电影网 九九电影网 www.youhuijuan.co 天堂网2014 天堂网