人教版高中英语 必修二 Unit3 《Computers---Warming up 》 课件(共33张PPT).ppt

1、WelcomeAmyI am very old now.I was born in ancient China.Many people used me for calculatingin the past,but now I am a bit lonely because they dont like me now.Do you know who I am?abacus bks n.算盘Warming-upI am very small.I can be used for calculating.In our class,a lot of students use me to solve ma

2、ths problems.Do you know who I am?Calculatorklkjuleit n.计算器I am built to solve some mathematical problems.But I am too big and I am built as large as a room.Who am I?A huge computerI am the common computer and widely used in offices and homes now.personal computerWho am I?A PCkeyboardmousemonitorscr

3、eenspeaker host computercameraLaptop lptp/PDAnotebook n.手提电脑Do you know who I am?it is a kind of computer which can be taken conveniently(方便地)like a notebook.I am a devoted friend and helper of humans and I can do some simple things as human beings such as wash dishes,clean floors and so on.Who am I

4、?robotPDAabacuscalculatorhuge computerPClaptopWhats next?Can you put them into a right order?robotWhat do these pictures tell us?They tell us about the development of technology.Unit 3 ComputersConnection?Task 1 Task 1 SkimmingSkimming1.Who is the speaker in this story?A computer.2.Whats the main id

5、ea of the text?A.The computer wants to find“who he is”.B.The function of the computer.C.The computer becomes popular around the world.D.The changes and the applications of the computer.A tip:The key words in the text may help you to summarize the main idea of the text.Answer the questions.2.Who was

6、the first person to make the earliest puter?A.alan TuringB.Charles babbage C.Charles Turing1.When was the“universal machine”built?A.In 1822 B.In 1642 C.1936(B)(c)Task 2scanningRead the text quickly and find out the history of computers.Many new _have been found.16421822Now19361960s1970sThe computer

7、began as a_.The _was built by Charles Babbage._wrote a book about how computers could be made to work as a_.The first family of computers was connected to each other by_First as a _and then as a _,Computers were used in offices and homes.The history of computers:1940s The computer had grown_.Timelin

8、eWhat happened?calculating machineanalytical machineAlan Turinguniversal machineas large as a rooma network.applicationsPClaptopTask 3Detail reading Find the topic sentence of each paragraph and the supporting details.Para-graph 1Para-graph 2Para-graph 3Topic sentenceSupporting details(key words)Par

9、agraph 1Topic sentenceSupporting details(key words)Over time I have been changed quite a lot.1.Calculating machine2.analytical machine3.universal machine4.PC5.laptopParagraph 2Topic sentenceSupporting details(key words)These changes only became possible as my memory work5.World Wide WebParagraph 3To

10、pic sentenceSupporting details(key words)Since the 1970s many new applications have been found for munications 2.finance 3.trade4.4.robots 5.5.mobile phones6.6.medical operations7.7.space rocketsuA topic sentence tells us the main idea of a paragraph.uA topic sentence is usually the first or last se

11、ntence of a paragraph.summaryTask 4 Discuss&speaking What can we do on a computer in our daily life?search for some informationwatch movieslisten to musicread books/magazinessend emails to friendsDownload filesDo shopping on lineplay gamesdraw pictureslook at photographs Do homeworkCommunicate/chat

12、with my friends.do homeworkdraw picturesplay gamescommunicate with my friendsSearch for some informationlisten to musicwatch moviesShopping online.Keep in mind:uMake use of the computer properly,and let it be our good helper;uControl the Internet time,and protect our health.Homework1.Review the text2.Recite Para one3.Finish Ex.1/2 on Page 20.Thankyou!