Unit3Computers单元课件(人教课标必修2)

smaller desktop
convenient laptop
palmtop
Skimming to get
general ideas
Skimming
Reading Comprehension I
1. Who is the speaker in this story? A computer.
2. What’s the main idea of this passage? A. The development of computers. B. The development and use of computers. C. A machine which is simple-minded. D. Computers may replace human beings.
Size: smaller Intelligence: cleverer
Speed: quicker
Function:
calculating
dealing with …, communicating with…
People’s opinion: simple-minded
clever & useful
( 2 ) analytical machine ( 5) laptop ( 1 ) calculating machine ( 6 ) robot ( 4 ) PC ( 3 ) universal machine
Charles Babbage
Alan Turing
Q: how did computer change in its size, intelligence, speed, function? And how about people’s opinion?
6. As time went by, I was made bigger. 7. Since the 1970s many new
applications have been found for me.
Scanning
Reading Comprehension IV
1. Who was the first person to make the
1970s. 3. Since my birth I have been built to take
the place of the human race.
Scanning
4. I began as a calculating machine in Japan in 1642.
5. In 1936, I grew rapidly both in size and in brainpower.
Unit 3 Computers单元课件（人教课标必修2 ）
Reading
WHO AM I?
Skimming
Reading Comprehension II
Look at these inventions. Can you put them in an order according to the time when they appeared?
improved. Since the 1970s many new
applications have been found
Para 3:
for me. Over time I have been
changed quite a lot.
Scanning to get
detail information
Scanning
Reading Comprehension III
True or False 1. My real father was Charles Babbage,
who wrote a book and built me in 1936. 2. I was brought into people’s homes in the
brainpower
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 now Computers connect people all over the world
together.
Careful reading to solve
difficult points
Match the main ideas and the paragraphs.
Para 1:
These changes only became possible as my m
1642 The computer began as a calculating machine．
1822 The Analytical Machine was made by
Charles Babbage.
1936
WThhaetcoims ptuhteerogrrdewerraopfidtlyhebotthexints?ize and in
C. In 1936.
D. In 1970.
Scanning
3. When was the computer the biggest?
A. In 1642.
B. In 1936.
C. In the 1940s. D. In the 1970s.
4. How old is the computer?
A. About 170 years old.
B. About 270 years old.
C. About 370 years old
earliest computer?
A. Alan Turing. B. Charles Babbage.
C. Charles Turing. D. Alan Babbage.
2. When was the “universal machine” built?
A. In 1822.
B. In 1642.