unit3 computer阅读1.ppt

1、Warming up & reading,Unit 3 Computers,Guess!,A toy?,A handbag?,Computers,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 dont like me now. Do you know who I am?,abacus,Guess more:,I am very small. I can be used for calcu

2、lating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?,calculator,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 Im small enough for you

3、to take me with you.,notebook computer,Do you know who I am?,abacus,calculator,A huge computer,PDA,laptop,A PC,PC,( ) analytical machine,( ) calculating machine,( ) laptop,( ) universal machine,( ) robot,1,2,3,4,5,6,the history of the computer,1,2,3,4,5,6,Reading,1.Who is the speaker?,It is a comput

4、er.,Skimming,The main idea of the text The text mainly talks about the _ and _ of computers . And it is also about the _ between computers and humans.,history,development,relationship,How did the writer organize the text?,According to the time,Timeline,1642:The computer began as _:The Analytical Mac

5、hine was made by Charles Babbage. : 1940s: _: The first family of computers was connected to each other. 1970s: Now:,a calculating machine,1822,The computer had grown,1960s,Computers connect people together.,The computer grew rapidly both in and in,Computers were used in,1936,size,brainpower,as larg

6、e as a room,offices and homes,all over the world,Careful Reading,Read para 1 and fill in the gaps, What was the computer called in different stages? 1. It began as a(n) _ in France in 1642. 2. About 200 years later it was built as a(n) _ by Charles Babbage. 3. In 1936 it was made to work as a(n) _.

7、4. Later it was built as a _. 5. As a _, it has been used in offices and homes since the 1970s.,calculating machine,analytical machine,universal machine,PC(personal computer),laptop,Listen to paragraph 2: How did its memory improve?,These changes only became possible as my memory improved. First, I

8、stored my memory in _, then on _. As I grow smaller later, I store it on very_ _. In the early 1960s, I was given a family connected by a _, so my memory became even larger. And now, I was able to share my knowledge with others through the_ _ _.,tubes,transistors,small,chips,network,World,Wide,Web,W

9、hat are the new applications?,mobile phones,Paragraph 3,provide a life of high quality,finance,robots,communication,medical operations,trade,space rocket,.,1960s,Summary: Retelling,一、重点短语 1 have sth. _ common 和有共同之处 2 _ with 把与相比 3 from _ / _ on 从那时/ 现在起 4 go _ 过去，经过，走过 5 so ._ 如此以至于 6 as a _ 结果 7 a

10、s _ as 既又, 不但而且 8 provide sb. _ sth. 为某人提供某物 9 _ sth. with sb. 与某人分享某物 10. _ the early 1960s 在20 世纪 60 年代初期 11. human_ 人类 12. Technological _ 技术革命,in,compare,then,now,by,that,result,well,with,share,in,race,revolution,二、经典句式： 1.I developed very slowly and _ _ _ two hundred years _ _ _ _ (差不多到了两百年之后我才

11、被建成）as an analytical machine by Charles Babbage. 2.At that time _ _ _ _ _ _ 这被当作是一次技术革命）and the start of my artificial intelligence 3._ _ _ _（随着时间的推移）， I was made smaller.,it took,nearly,before I was,built,it was considered a,technological revolution,As time went by,4._ _ _ (结果）I totally changed my shape. 5.But I was