人教版高中英语 必修二 Unit3 《Computers---Reading》 课件(共21张PPT).ppt

1、Whats next?Computer and Internet play gamesgather informationdo shoppingcommunicatefor homeworklisten to musicwatch moviesDo you know the following the terms about the computers and the Internet?software hard diskdownload upload e-mail website homepage password virus web fans hacker surf the Interne

2、t world wide web 万维网Now lets come to the readingFast reading and pick out the items mentioned in the text.1.an abacus2.a calculating machine3.change of my size4.virus5.the Analytical Machine made by Charles Babbage6.transistor 7.hard disk8.connected by a network9.chat room 10.serve the human race1.W

3、hich type/style does the text belong to?2.Main idea:This is a short history of the _ of the computer.3.Why does the writer use the title WHO AM I?A.Description(描写)B.Naration(叙述)C.Exposition(说明)D.Argumentation(议论)Personification(拟人）the first person simple,vivid（生动）,interesting,understandable.developm

4、entthe computerI refers to _.164218221940s1970sNowCareful reading.Finish the timeline below.The“analytical machine”was made by Charles Babbage.The first family of computers was connected to each other.The computer began as a calculating machine1936The computer grew rapidly both in size and in brainp

5、ower.The computer had grown as large as a room.1960sMany new applications have been found for the computer.Computers connect people all over the world together.Now have you known my development?Para 1Para 2Para 3Topic sentenceSupporting details1.calculating machine1.tube1munitions2.financeCareful re

6、adingread the passage again and complete the chartCareful readingRead paragraph one and complete the chart.Paragraph oneTopic sentenceSupportingdetails1.Over time I have been changed quite a lot.1.calculating machine2.analytical machine3.universal machine4.pc5.laptopPCl()analytical machinel()calcula

7、ting machinel()laptopl()universal machine12345Changes in size 1._ (earlier)2._ (in the past)3._ (modern)not very bighugesmaller and thinnerRead paragraph two and complete the chart.Paragraph twoTopic sentenceSupportingdetails These changes only become possible as my memory improved.5.world Wide Web1

8、.tubes2.transistors3.small workParagraph threeTopic sentenceSupporting details Since the 1970s many new applicationshave been found for me.Read paragraph three and complete the chart munications2.finance3.trade4.robots5.mobile phones6.medical operations7.space rockets8.Provide a life of high quality

9、I was born as a _ machine in 1642.When I was young,I was good at simplifying difficult sums.About 2 hundred years had passed before I could think _ and produce quicker answers.At that time,I was called an _ machine.In 1936,I was built as a _ machine.I had the ability to _any mathematical problem.Fro

10、m then on,I grew rapidly both in _ and memory.After I stored my memory on _instead of in tubes.I became _ in size but _in intelligence.logically solvesizetransistorssmallercleverercalculatinganalyticaluniversalSummaryIn the 1960s,I could be connected with other computers by a _.From then on,I was ab

11、le to share my knowledge with others through the _ _ _.After that,I had many new_.Now,I am glad to serve human beings as a _ friend and a pleasant workWebapplicationsdevotedAs time went by,I became even smaller,for I put my memory on a very small _,which made me become PC and laptop.chipWorld WideDi

12、scussionEvery coin has two sides,so does the Internet.Now discuss the advantages and disadvantages of the computer and Internet in groups and think what we should do.Homework1.Practice reading the passage.2.Write a short passage about the advantages and disadvantages of the computer and Internet and what we should do.