人教版高中英语必修二第三单元：unit3Computers

Task 2. Discussion
1.What can the computer be used for?
school work games emails music and films chat information photos shopping
smaller desktop
convenient laptop
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?
computers could be made to work．
1940 Computers had grown as large as a room.
s
1960s The first family of computers was
connected Computers
to were
used
in
offices
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
(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.
and
homes．
each other.
Computers connect people all over the world
1970 together.
True or False
1. Alan Turing built an Analytical Machine to
solve any mathematical problems.
Homework:
1. Review the passage 2. Do Ex. 1-3 on P19-20. 3. Read the story about
Bill Gates.
(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
1642 1822
1936
began … calculating …France
The Analytical Machine … Charles Babbage
Alan Turing … wrote … built …
1940s 1960s
As large as connected … share … talk …
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.
● 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.
F
2. People began to realize that the computer got
cleverer and quicker with time passing. T
3. The computer began to serve the human race
since it was brought into people’s homes. F
4. Spienocpelethaero1u9n7d0st,htehewcoormldptuhtreoruwghasthueseIdntbeyrneTt.
5. The larger the computer is, the more memory
it has.
F
Comprehending:
1.Choose the best answers
Scanning: Timeline
1642 The computer began as a calculating machine．
1822 The Analytical Machine was made by
1936
ICAnhlaawnrhlTeiuscrhinBogarwbdrbeoartgeieas.btohoek ttoedxetscorirbgeahnoiwzed?
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.
Do you know who I am?
notebook computer
A huge computer
Palmtop
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.
高中英语课件
（金戈铁骑 整理制作）
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.
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.
calculatorLeabharlann Baidu
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.
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.
• Intelligence: cleverer
• Speed: quicker
• Function: calculating----dealing with …, communicating with…
• People’ opinion:clever & useful
Consolidation: Retelling
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