高中英语人教版必修二Unit3Reading课件

1940s The computer had grown as large as a room. The first family of computers was
1960s connected to each other.
1970s Computers were used in offices and homes. Computers connect people all over
1. Who was the first person to make the
earliest computer?
A. Alan Turing. B. Charles Babbage.
C. Charles Turing. D. Alan Babbage.
2. When was the “universal machine” built?
A. About 170 years old.
B. About 270 years old.
C. About 370 years old
D. About 470 years old.
Scanning
5. Which of the following is in the right
order of time?
Answer: I began as a _c_a_lc_u_l_a_t_in_g_ _m__a_ch__in_e_ in 1642 in France. In 1822 I was built as an _a_n_a_ly_t_i_ca_l_ m__a_c_h_i_n_e_. Then in 1936 Alan Turing wrote a book and built a _u_n_i_v_e_rs_a_l _m_a_c_h_i_n_e_. As the years have gone by, I have been made _sm__a_l_le_r_ and _s_m__a_ll_e_r_ but I became __cl_e_v_e_r_e_r_ and _q_u__ic_k_e_r__.
Careful reading
Match the main ideas and the paragraphs.
Para 1:
These changes only became possible as my memory
improved.
Para 2:
Since the 1970s many new
In the ______ they gave me a family connected by a ________. Now people call it the ________. I have been used in ______ and ______ since the 1970s. So I became PC. Since my ______ I have truly been built to serve the _______ ____.
Can you tell the development of computers?
abacus calculator huge
PC
computer
What’s next?
robot
PDA
laptop
Skimming
Now listen to the tape carefully and then get the
A. In 1822.
B. In 1642.
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?
Skimming
Reading Comprehension II
Look at these inventions. Can you put them in an order according to the time when they appeared?
( 2 ) analytical machine ( 5 ) laptop ( 1 ) calculating machine ( 6 ) robot ( 4 ) PC ( 3 ) universal machine
4. the part of the computer that you type on
5. the part of a computer that stores information
6. the part of computer that we can put a CD in
screen keyboard mouse monitor DVD-ROM hard disk
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 IV
general idea .
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.
I’m a machine that works automatically. I can do a wide variety of tasks, especially suitable for doing jobs too boring, difficult, or dangerous for human beings. Do you know who I am?
abacus
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. Do you know who I am?
d. The computer began to simplify
difficult sums.
A. a. b. c. d.
B. b. c. a. d.
C. d. a. c. b.
D. d. b. a. c.
Scanning
Reading Comprehension V
Finish the timeline below.
Now the world together.
The history of computers
the first generation (1945-1956)
the second generation (1956-1963)
the fourth generation(1971- )
the third generation (1964-1971)
有条理地
Expressions preview
from…on 从……时起 as a result 结果 so…that… 如此……以致于
Reading
WHO AM I?
Riddles (谜语)
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. Do you know who I am?
a. The computer was connected with
other computers.
b. Alan Turing wrote . The computer has been sent to explore
the Moon and Mars.
1642
The computer began as a calculating machine．
The analytical machine was made by 1822 Charles Babbage.
1936
The computer grew rapidly both in size and in brainpower.
In the _1_9_6_0_s_ they gave me a family connected by a _n_e_tw__o_r_k_. Now people call it the _I_n_te_r_n_e_t_. I have been used in _o_ff_i_c_es_ and _h_o_m__e_s since the 1970s. So I became PC. Since my _b_ir_t_h_ I have truly been built to serve the _h_u_m_a_n__ _r_a_ce_.
Unit 3
Computers
Words preview
calculate vt. 计算 universal adj. 普遍的；宇宙的 simplify vt. 简化
sum n. 总数；算术题；金额 operator n.（电脑）操作员；
接线员 logical adj. 合逻辑的；合情理的 logically adv. 逻辑上；合逻辑地；
Quiz
Quiz I Retell the text by filling the following blanks. 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 gone by, I have been made _______ and ________ but I became _________ and _________.
laptop
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?
calculator
robot
Can you give us the English names of a computer components (组件)? Tips: 1. We can use a computer to …
2. It is made up of some parts, such as…
components of a computer screen 屏幕 monitor 显示器
host 主机
speaker 音响
keyboard 键盘 mouse 鼠标
Match
1. the part of the computer that looks like a television
2. the part of the monitor that you look at
3. something you use to click on things (files, etc.)