高中英语必修二unit3课件

Sample questions:
……
What do you like to eat? What are your hobbies? What is your newest
function(功能)? Can you say something
about your future plan? etc.
True or False
1. Alan Turing built ana Aunniavleyrtsicaal lmMaachchininee to
solve any mathematical problems.
F
2. People began to realize that the computer got
2. Questions
Q1: How did the computer work as an Analytical Machine? The computer followed instructions from cards with holes.
Q2: In how many ways do we say the computer changed? What are they? • Size: smaller
1642
began … calculating …France
1822 The Analytical Machine … Charles Babbage
1936 Alan Turing … wrote … built …
1940s 1960s
As large as connected … share … talk …
1940s Computers had grown as large as a room.
1960s The first family of computers was connected to each other.
1970s Computers were used in offices and homes.
5. TIhbeeclaarmgeerstmhaelcl oamndputhteinr ibsu, tthIegmotocrleevmeermeroarnyd ictlheavse.rer, quicker and quicker. And my memoFry
百度文库
became so large that I couldn’t believe it!
Scanning:
Timeline
1642 The computer began as a calculating machine．
1822 The Analytical Machine was made by Charles Babbage.
1936 Alan Turing wrote a book to describe how computers could be made to work．
• Intelligence: cleverer
• Speed: quicker
• Function: calculating----dealing with …, communicating with…
• People’ opinion: clever & useful
Consolidation: Retelling
Do you know who I am?
notebook computer
A huge computer
Palmtop(掌上型电脑)
A PC
Who am I ?
Skimming: Go over the story to find out
who the speaker is. Write down 3 sentences to support your idea. It is a computer.
1T.Washkat2c.aDn itshceucsosmiopnuter be used for?
school work games emails music and films chat information photos shopping
smaller desktop
convenient laptop
cleverer and quicker with time passing. T
3. The computer began to serve the human race
since itswbaisrtbhrought into people’s homes. F
4. Spienocpelethaero1u9n7d0st,htehewcoormldptuhtreoruwghasthueseIdntbeyrneTt.
palmtop
2.What about in the future?
virtual keyboards 虚拟键盘
Nose-top keyboard-vest
What about in the future?
robot
Task 3. Role-play
Suppose you are a reporter. Now you are interviewing Mr. / Miss Computer.
Do you know who I am?
abacus
I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems.
Do you know who I am?
Guess!
A handbag?
A toy?
Guess more:
I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now.
(a) the part of a computer that stores information.
(b) the part of the computer that you type on.
(c) the part of the computer that looks like a television
(d) something you use to click on things (files, etc.).
(e) the part of the monitor that you look at.
(f) a separate disk that contains lots of information.
calculator
I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because I’m small enough for you to take me with you.
2) What can you infer from the text? A. The computer has artificial intelligence. B. The computer changes a lot over the years. C. The computer was not connected by a network until in the early 1960s. D. Now the computer can only be used to deal with information.
Comprehending:
1. Choose the best answers
1) What’s the main idea of the text? A. The computer wants to find “who he is”. B. The functional change of the computer. C. The computer becomes popular around the world. D. The history of the computer.
Homework:
1. Review the passage 2. Do Ex. 1-3 on P19-20. 3. Read the story about
Bill Gates.
● I was built as an Analytical Machine by Charles Babbage.”
●”My real father was Alan Turing ....”
● I was able to share my knowledge with others through the World Wide Web.
1970s now
Become very important in … deal with … communicate …
Match the words with their meanings.
1 A monitor is 2 The screen is 3 A keyboard is 4 A mouse is 5 A CD-ROM is 6 A hard disk is