课件11张PPT。Unit 3 ComputersChecking answer – I (2m)Answer keys for Ex.1 on Page 19:1.___________
2.___________
3.___________
4.___________
5.___________
6.___________
7.___________
8.___________
9.___________
10.__________completely
complete change
to make something happen
when a baby or animal is born
unable to understand difficult things
pass
take correct action
broadcast on several different channels
indeed
used to show that something happens in spite of a problem
anywaytrulynetworkdeal withgo bysimple-mindedbirthso…thatrevolutiontotallyChecking answer – II (2m) Answer keys for Ex.2 on Page 20:1.revolution 2. network
3. so …that 4. went by
5. totally 6. simple-minded
7. Anyway 8. deal withChecking answer – III ( 4m )Answer keys for Ex.3 on Page 20:Life (total/totally)changed when I went to university.
I was (amazed / amazing) to find that I won the competition to design a new computer.
The competition was so (excited / exciting) that we cheered all evening.
I was so (excited/ exciting) at the thought of meeting Yang Liwei that I could not sleep.
Robots can be bought so (cheap/ cheaply )that I gave one to each of my friends.
It was so (unlucky/ unluckily) that you lost your watch at the concert.GrammarPage 20 Passive Voice 现在完成时的被动语态 have/ has been done1.The new bridge over the Yellow River has just been completed.
2.Many more buildings have been built in the past ten years.表示到现在为止已经完成的某个被动的动作否定式： have/ has not been done疑问式: have/ has +主语+been doneChange the following sentences into the present perfect passive voice. Put the verbs into the correct form.(P20)We have bought a new personal computer.
2.We have found many problems with our new computer.A new personal computer has been bought by us.Many problems have been found with our new computer by us.3. They have built a PC the way we wanted.
4. They have just joined our computer to the Internet.
5. We have used the computer every day since we bought it.
6. We have written a lot of e-mails on the computer in the past year.A PC has been built the way we wanted by them.Our computer has been joined to the Internet by them.The computer has been used every day since we bought it.A lot of e-mails have been written on the computer in the past year.1.被动语态介词固定搭配不能省略。
He has thought of a way of solving the problem.
Eg.The accident which happened yesterday surprised me.=A way of solving the problem has been thought of.2.break out/ happen/ take place/ arrive/ become/ die/ disappear etc 不及物动词没有被动语态3.带双宾语的动词give /send/bring/ take/teach/show/ tell/ make/ sing/ write/ sell/buy/ ask/ pay/ borrow/ lend/ hand/ offer/provide/ pass/get/promise 变被动语态有两种方法：（2）=The book has been given to him.（1）=He has been given the book.Eg.I have given him the book. (2) =We have been offered the most comfortable service by him.He has offered us the most comfortable service.(1) =The most comfortable service has been offered to us by him.课件9张PPT。Reading ?Who Am IUnit 3 Computer1) Then in 1822 I was built as an Analytical machine by Charles Babbage.
2) My real father was Alan Turing, …
3) However, people thought I was simple-minded until they discovered I had “artificial intelligence.” 1. Who is the speaker in the story?
2. Write down three sentences from the story to support your idea.A computer.Fast readingName : computer
Born : (time)_______ (place)_____
My father: _____________________
My size: 1._______________(earlier)
2._______________( in the past)
3.____________________(modern)
My history: 1. 1642 ___________machine
2. 1822__________machine
3. 1936 __________machine
4. 1960s computers with _________
5. 1970s ______ and ________ computers.
My usage: 1. ____________
2.____________
3.____________
Who am I 1642France Alan Turingnot very bighugesmaller and thinnerAnalytical calculatinguniversaltransistorsPCnotebookshare information.communicate with others.serve the human race.Timeline 1642: __________________________
_______________________________
____: the Analytical Machine was
Made by Charles Babbage.
1936:___________________________
_______________________________
_______________________________
1960s:__________________________
_______________________________
_______________________________A calculating machine was
used in France.1822Alan Turing wrote a book to
describe how computers could
be made to work.Computers have new
transistors and became
smaller._____: the first family of computers
was connected to each other.
1970s: _________________________
_______________________________
Now:___________________________
_______________________________1960sComputers were brought into
people’s homes.Internet --Computers connect
people all over the world together.This is a short ________ of the ______________ of computers.The main idea of the passage:historydevelopmentChanges of the machineCalculating machineAnalytical machineUniversal machineartificial intelligencePC (desktop/ notebook)Internet ?TimeRetelling I began as a _______ ________ in 1642 in France. In 1822 I was built as an
_____ ______. Then in 1936 Alan Turing wrote a book and built a _______ ______. As the years have___ ___, I have been made___ ___ _______ but I got ____ ____ ___,____ __ ____. In the 1960s they gave me a family____ __ __ _____. Now people call it the Internet. I was _____ ____ ____ ___ in the 1970s.So I became PC. Since my birth I have truly been built to serve the human race.
calculating machineAnalytical Machineuniversal machinegone bysmaller and smallercleverer and clevererquicker and quickerconnected by a networkbrought into people’s homes课件19张PPT。warming-up and lead-in guessingI am a machine that you can watch a lot of different programs at home. And I have a screen with moving pictures and sounds.3. I am a machine that is a good helper in doing housework, especially washing clothes.2.I am a machine that you can use to talk to other people even in far-away place. Each of us has a number.(TV set)(telephone)(washing machine)5. I am a machine that you can use in all kinds of machines above.4. I am a machine that moves very fast on four wheels. But you must get a license if you drive me.(car)(computer)Ⅰ. Show some pictures.An abacus A huge computer “银河”巨型计算机A PC AbacusHuge computerPCCalculatorNotebook
computerInternetRobot?How do computers develop？ Discussion 1. What do they have in common? （Using some of the following expressions in your discussion.） I think that… In my opinion…
I believe that… What’ s your reason?
Why do you think so? 1.They can be used for calculating.
2.They can deal with maths problems.
3.They are our friends.
4.They are useful and helpful. ……What is it in English??Main board(主板)CPU (central processing Unit)
中央处理器RAM
(随机存储器)
(Random Access Memory )hard disc
硬盘DVD ROM
Digital Versatile Disc Read Only Memory
数字通用光盘 Keyboard (键盘)Power supply
(电源)CRT display
（Cathode?Ray?Tube阴极射线管）
纯平显示器mouse
鼠标display card
显卡Ⅳ. Read through the words in the box. Use some of them to name each part of a computer in the box. Monitor mouse keyboard hard disc floppy disc CD-ROM printer scanner modem Chips CPU floppy discchipsmonitormodemCD-ROMscannerkeyboardprinterⅤ. Complete the sentences with some of the words in the box . You can use each word only once. 1. A _______ is a machine for printing text or pictures onto paper, especially one connected to a computer.
2. A __________ or disk is the main device that a computer uses to store information.
3. A ________ is used to see your data on a computer.
4. A __________ is used to put data into a computer.printerhard discmonitorkeyboardMonitor mouse keyboard hard disc floppy disc CD-ROM printer scanner modem Chips CPU 5. A _______ is often used to connect computers to each other through phone lines.
6. Data can also be stored in a ___________ , which is small and can be carried easily.
7. A _________ is a disc that contains computer data. It can store a large amount of data.modemfloppy discCD-ROMⅤ. Complete the sentences with some of the words in the box . You can use each word only once. Monitor mouse keyboard hard disc floppy disc CD-ROM printer scanner modem Chips CPU How do people use the computers in daily life？ (1). use computer for school work
(2). play games on the computer
(3). send emails to friends
(4). surf the Web for fun
(5). download music and films
(6). chat online
(7). search for information
(8). look at photographs
(9). do shopping online
……Discussion ListeningSuggested answers:A good way to get information, cheap, easy to take with youSometimes the information is out of dateListening to sports and English programmes are better.Speak fast and hard to understand everythingEasier to follow and can see what is going on , more interestingCan not get information on the technical aspects of a gameWatch, write, get and find out some informationExpensive, too big to carry with you. LI MING: What are you doing Dave?
DAVE: I'm reading about _____________________．
LM:?You mean things like computers? _____________ they’re so boring to read about. They're only good to use.information technologyIn my opinionLISTENING TEXTD:?But they're just one kind of IT．
LM:?Really? So what else is part of IT?
D:?We've had IT for a long time. _______________________are also kinds of IT．
LM:?Oh. I never thought of that before. ______________________________ ________________.Books, radios and TVSBooks are a wonderful way for usto get information D:?Yeah, I believe that too. They are cheap and easy to take with you but sometimes the _________________ ____.
LM:? I agree. The world is changing so fast. But in my opinion __________ ________________ is better than anything else. Sometimes I alsoinformation is out ofdatelistening tosports on the radio listen to English programmes on the radio. But they speak so fast and sometimes it’s difficult to understand everything．
D:?Yes. I also listen to English on the radio but ______________________ because you can also see what is going on. Sometimes it is more interesting toit’s easier to follow on TV watch sports on TV than just listen to them on the radio．
LM:?I ________ because you get such a lot of information on the technical aspects of a game on the radio．You don't get that on TV. But __________________disagreeI still think that the computer is the best kind of IT. You can watch a film on it,__________ ,________________, and find out what is going on in the world．
D:?I know, but it is also the most expensive and it is too big to carry with you everywhere. Also the Internet has nobody to check whether that information you find there is correct. So you have to be careful．write to friendsget informationLM:?Well, I suppose all kinds of IT have both __________________________.disadvantages and advantagesI think that...
In my opinion...
I believe that...
I agree because...
I disagree because...
I’ve decided that...
