课件34张PPT。Unit 3 ComputersA PCa notebook computerA PCa notebook computerUnit 3 ComputerslighttelephoneaeroplanePC TVcell-phonetelevisioncarcomputer which one is the greatest invention in the 20th century? According to a public survey on the greatest invention in the 20th century, which was organized by some media( sina) last year and lasted almost half a year , internet and PC came first and second. 1. How do you use the computers in daily life? (1). play computer games
(2). QQ(chat on line)
(3). send emails to friends
(4). download music and films
(5). search for information
(6). do business or work
(7). use computer for school work
(8). look at photographs……
How useful computers are!Internet ThinkingHow was the computer invented?
And how did the computer technology develop?A PC( ) analytical machine( ) calculating machine( ) laptop( ) universal machine( ) robot( ) PC123456Unit3 reading Who am I ?Skim( 略读) the pictures, the title , the first sentence of each paragraph to summarize the main idea of the text in one sentence.1)The text tells us the ______________of the computer technology .development2) In what order does the writer develop the text?
A.In order of time B. in order of space
Scan (跳读) the years to finish the Timeline
1642:
: The Analytical Machine was made by Charles
Babbage.
:
1940s:
:The first family of computers was connected to
each other.
1970s:
Now: The computer began as a calculating machine.1822Alan Turing wrote a book to describe how computers could be made to work as a universal machine. The computer had grown as large as a room.1960sComputers have been used in offices and homes. Computers have become a devoted friend and helper of the human race.1936Careful reading: read paragraph one and complete the chartOver time I have been changed quite a lot._____________machine
analytical machine
universal machine
pc
laptop
calculatingA PC( ) analytical machine( ) calculating machine( ) laptop( ) universal machine( ) robot( ) PC123456Changes in size 1._______________ (earlier)
2._______________ ( in the past)
3.____________________ (modern)not very bighugesmaller and thinnerRead paragraph two and complete the chartThese changes only become possible as my memory improved.tubes
transistors
small chips
network
world Wild WebSince 1970s many new applications have been found for me. I have become very important in communication, finance and_________. I have also been put into __________and used to make ______________as well as help with__________________. I have been put into _____________and sent to explore the Moon and Mars. Anyhow, my goal is to provide humans with a life of high quality. I am now truly filled with happiness that I am a devoted ________________of the human race. the topic sentencetraderobotsmobile phonesmedical operationsspace rocketsfriend and helperSince the 1970s many new applications have been found for me.communications
finance
trade
robots
mobile phones
medical operations
space rocketsDiscussion1. Which type/style does the text belong to ?
Description(描写)
Narration(叙述)
Exposition(说明)
Argumentation(议论)
2. Why does the writer use the title WHO AM I ?
What kind of literary devices (修辞)does the text used?
Personification
the first person
—simple, vivid, interesting, understandable.
SummaryI was born as a in 1642. When I was young, I was good at____________ difficult sums. About hundred years had passed before I could think __________and produce_______ answers. At that time, I was called . In 1936, I was built as . I had the ability to _______any mathematical problem. From then on, I grew rapidly both in _______ and memory. After I stored my memory on ________instead of in _____. I became _______ in size but _________in intelligence. As time went by, I became even smaller, for I put my memory on a very small ______, which made me become PC and laptop possible. simplifyinglogicallyquicker solvesizetransistorstubesmallercleverer chipMY STORYIn 1960s, I could be connected with other computers by________. From then on, I was able to share my knowledge with others through _______________. After that, I had many new______________. Now, I am glad to serve human beings as a ___________________ and a pleasant ___________.a network the world wide webapplications a devoted friendhelperAssignments1.Read the passage again and again. Try to retell it according to the time.
2.Finish two pieces of comprehension reading.153426monitor 4. CD-ROM
keyboard 5. screen
mouse 6. hard diskLabel each part.I began as in France in 1642, Young as I was, I could __________________. However, It took me 200 years to develop as .After I was programmed by an operator who used cards with holes.