课件45张PPT。Unit 3 Computers
Who Am I?Guessing game With the development of science and technology, many new things appear in human being’s life.Let’s guess what they are:1. With me you can watch different programmes just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me 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. car3. I am a machine which is a good helper in doing house work.
I wash clothes for people.
Who am I?washing machine4. 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?telephone5.It is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information… Computerit is a kind of computer which can be taken conveniently like a notebook.A notebook computerDiscussing:What do they have in common?What do they have in common?What’s next?What English words do you
know about computers?What is it in English??mouse
鼠标What is it in English??CPU (central processing Unit)
中央处理器What is it in English??Main board(主板)What is it in English??displaycomputerInternetSearchKeyboardClickE-mailBlogB
Gill
atesE-palComponents of a computerScannerPrinterMonitorFloppy DiskMouseSpeakerWhat can computers
be used to do?How do you use computers and the Internet?YesNoI often use a computer to…, I sometimes use it to…, and I never use it to…Computers have great power. They make our lives more colorful and more convenient.
BUT
Don’t just use computers for fun.
Don’t spend too much time in playing computer games or chatting(聊天) online. We should learn more computer skills which are very useful in our future work.
Who Am I ?计算机器
分析机
穿孔卡
技术革命
通用机器
数学问题
人工智能
晶体管
存储容量
网络
万维网calculating machine
Analytical Machine
card with holes
technological revolution
universal machine
mathematical problems
artificial intelligence
transistor
memory
network
World Wide WebNew words and expressionsTask 1 Skimming1. Who is the speaker in this story?
A computer.
2. Write down three sentences from the story to support your idea.
1) I was built as an Analytical
machine by Charles Babbage.2) My real father, Alan Turing, …
3) I was always lonely standing there by myself, until in early 1960s they gave me a family connected by a network.Task 2 Scanning (finish Ex.1 on page19)The computer began as a calculating machineThe computer grew rapidly both in size and in brainpower.The computer had grown as large as a room.1960sComputers were used in offices and homes.Computers connect people all over the world together.1642:_____________________________________
1822:The Analytical Machine was made by Charles Babbage.
1936:_______________________________
___________________________
1940s:_________________________________
_____: The first family of computers was connected to
each other.
1970s:_________________________________
Now:_____________________________________
Task3 Listening
I began as a _______ machine in 1642 in France. In 1822 I was built as an _______ machine. Then in 1936 Alan Turing wrote a book and built a ______ machine. As the years have___ ___, I have been made ______ . There were times when my size ______ changed. And my memory became _____ large _____ I couldn’t believe it. In the 1960s they gave me a family_________ by a network. I was able to _________________with others through the World Wide Web. Since the 1970s many new applications ______________ for me.calculatingAnalyticaluniversalgone bysmaller totallythatconnectedhave been foundshare my knowledgeso Listen to the tape and
fill in the blanksTask3 Detailed readingOver time I have changed quite a lot.These changes only became possible as my memory improved.Since the 1970s many new applications have been found for me.Find out the topic sentence of each paragraghsupporting detailsParagraph 1Over time I have changed quite a lot.Calculating machine Analytical machine
Universal machine PC laptopParagraph 2These changes only became possible as my memory improved.Tubes Transistors Chips Network World wide webParagraph 3Since the 1970s many new applications have been found for me.Communications Finance Trade Robots Mobile phones Medical operations Space rocketsProviding a life of high
qualityOnly c___________Following instructions from c________________Solving any m____________ problemHaving artificial ____________S______er and q_______erC___________ by a network.Discuss in pairs and work out the changes of the computer abilities.alculatingards with holesathematicalintelligencemalluickpplicationsonnectedMany new A___________ .Changes of the machineCalculating machineAnalytical machineUniversal machineMachine with artificial intelligenceMachine with new transistorA family connected by a networkA family used by the InternetretellTask 4 QUESTION-ANSWER
COMPETITION What is PC? Speak the name on the whole.It means: personal computer.2. What is IT?Information Technology3. What is PDA?personal digital assistant.4. What is W.W.W?World Wide Web.5. What is “科学技术” in English?science and technology6. What is “人工智能” in English?artificial intelligence7.What’s “手提电脑” in English?laptop ( notebook computer)8. Who was the first person to devise(设计,发明) the first computer? Charles Babbage invented an Analytical machine in 1822.9. Who was the computers’ real father?Alan Turing.1. Where were you in 1642?2. What happened to you in 1822?3. What were you called in 1936?4. What did you get in 1960s?5. What happened to you in 1970s?
InterviewChoose one student as Mr./Miss Computer,
and the other students as reporters. The reporters may ask the following questions:Some other questions will be better.DiscussionIs it very important to learn computer skills for us? Why or why not?
Use the following expression in your discussion.
I think that ……
In my opinion …
I believe that …
What’s your reason?
Why do you think so?How much do you know
about a computer???Give the English name of the
following pictures of the
computer components (组件)More knowledge ScannerPrinterMonitorFloppy DiskMouseSpeakerWhat is it in English??RAM
(随机存储器)
(Random Access Memory )What is it in English??hard disc
硬盘What is it in English??Power supply
(电源)What is it in English??display card
显卡DVD ROM
Digital Versatile Disc Read Only Memory
数字通用光盘 Bye-bye !
