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必修二Unit3-computers-reading课件--公开课课件

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人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共31张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共31张PPT)

Para III:
have been found out for me.
Skim the passage and find out the topic sentence in each paragraph.
Para I:
Over time I have been changed quite a lot.
of computers. D. Computers may replace human beings.
Can you find out the topic sentence of each paragraph? Try to list the supporting details.
Skim the passage and find out the topic sentence in each paragraph.
Discuss it with your deskmate.
watch movies
search for information
chat with friends
read books and
magazines
shopping online
play games
Reading
Who am I?
Go over the story to find out who the speaker is. Underline three sentences to support your idea.
The computer began as a calculating machine．
The computer grew rapidly both in size and in brainpower. The computer had grown as large as a room.

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共25张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共25张PPT)

1. get too addicted (沉溺于)to it . 2. waste too much time in playing
games. 3. may be cheated (欺骗)by
someone on line. 4. have little time to study 5. bad for our eyes and health 6. have trouble in communicating
with others …
Parents’ view on mobile phone Smart phones
Debate show
Should we use smart phones in school?
Rules: • One student one point • Stand up to express your idea • Loudly • Clearly
Do you know who I am?
abacus
I am very small. I can be used for calculating. A lot of students use me when solving mathematical problems. Do you know who I am?
Discussion
List the advantages and disadvantages of the mobile phone
Advantages
Disadvantages
1. communicate with friends 2. listen to the music 3. see films & watch news 4. play games 5. do shopping 6. save a lot of time …

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)

C. Charles Turing. D. Alan Babbage.
2. When was the “universal machine” built?
A. In 1822.
B. In 1642.
C. In 1936.
D. In 1970.
Scanning
3. When was the computer the biggest?
Discussion
Brainstorm a list of things that you, your school and your family use computers for. Think about what you would have to do if you could not use computers any more.
Reading
WHO AM I?
Skimming to get
general ideas
Reading Comprehension Complete the chart below.
Over time I have been changed quite a lot.
1 calculating machine 2 analytical machine 3 universal machine 4 PC 5 laptop
D. d. b. a. c.
Quiz
Retell the text by filling the following blanks.
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

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)
calculator
I am very big. Scientists use me to solve some mathematical problems. Do you know who I am?
huge computer
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?
Computers were used in offices and homes. Computers connect people all over the world together.
Scanning to get
detail information
Scanning
Reading Comprehension III
Homework
1. Read the text after class and look for more information about the development of the computer and its applications.
PDA
Personal Digital Assistant
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?

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共21张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共21张PPT)

details
3. trade
4. robots
5. mobile phones 6. medical operations
7. space rockets
8. Provide a life of high quality
Summary
I was born as a __c_a_lc_u_l_a_ti_n_g_ machine in 1642. When I was young, I was good at simplifying difficult sums. About 2 hundred years had passed before I could think _lo_g_i_c_a_ll_y__ and produce quicker answers. At that time, I was called an __a_n__a_ly_t_ic_a_l_ machine. In 1936, I was built as a __u_n_iv_e_r_s_a_l__ machine . I had the ability to _s_o_lv_e___any mathematical problem. From then on, I grew rapidly both in __s_iz_e___ and memory. After I stored my memory on _tr_a_n_s_i_st_o_r_s_instead of in tubes . I became _s_m__a_ll_e_r in size but _c_le_v_e_r_e_r__in intelligence.
As time went by, I became even smaller, for I put my memory on a very small _c_h_ip___, which made me become PC and laptop.

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共21张PPT)

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共21张PPT)

Homework
1. Practice reading the passage. 2. Write a short passage about the advantages and
disadvantages of the computer and Internet and what we should do.
Supporting details
1. calculating machine 2. analytical machine 3. universal machine 4. pc 5. laptop
4 PC ( 2 ) analytical machine
( 5 ) laptop
( 1 ) calculating machine ( 3 ) universal machine
9. chat room
★10. serve the human race
1. Which type / style does the text belong to ?
A. Description(描写)
B. Naration(叙述)
C. Exposition(说明)
D. Argumentation(议论)
1. an abacus
★2. a calculating machine
★3. change of my size
4. virus ★5. the Analytical Machine made by Charles Babbage
★6. transistor
7. hard disk
★8. connected by a network
2. Main idea: This is a short history of the _d_e_v_e_lo_p__m_e_nt

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)

True or False 1. My real father was Charles Babbage,
who wrote a book and built me in 1936. 2. After I got my new transistors in the
1960s, I became smaller but cleverer and quicker. 3. I was brought into people’s homes in the 1970s. 4. Since my birth I have been built to take the place of the human race.
PC
Personal Computer
Can you tell the development of computers?
abacus calculator huge
PC
computer
What’s next?
robot
PDA
laptop
What is a computer?
A computer is a machine which keeps knowledge in its memory and does work on that knowledge. This knowledge is kept in symbols; it is called data. A computer usually has a monitor to show results. However, some computers can speak. These computers can be used for voice mail.
Scanning

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共25张PPT)

trade. The computer is a devoted friend and helper of the_h_u_m_a_n__ race.
Discussion
List the advantages and disadvantages of the mobile phone
Advantages
the _a_n_a_ly_t_ic_a_l_machine was made by Charles Babbage. At that time, after the computer was _p_r_o_gr_a_m__m_e_d by an operator who used cards with holes, it could “think” logically and produce an answeqru_ic_k_e_r___ than any person. With the time going by, the computer has been made _s_m_a_l_le_r__. Later, computers were __co_n_n_e_c_te_d__ with each other.
World Wide Web
Para 3: Since the 1970s many new applications have been found for me.
communication finance trade robots mobile phones medical operations space rockets
The information could be _s_h_a_re_d__.
Since the 1970s many new _a_p_p_li_c_at_i_on_s_have been found for the computer. It has become very important in _c_o_m_m__u_n_ic_a_ti_o_n, finance and

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)

robot
I’m a small, relatively inexpensive computer designed for an individual user. I’m based on the microprocessor technology. At home, people use me to surf the Internet and play games. Do you know who I am?
applications have been found for me.
Scanning
Reading Comprehension IV
1. Who was the first person to make the
earliest computer?
A. Alan Turing. B. Charles Babbage.
Homework
1. Read the text after class and look for more information about the development of the computer and its applications.
PDA
Personal Digital Assistant
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?
1 communications 2 finance
3 trade
4 robots 5 mobile phones 6 medical operations 7 space rockets

人教版高中英语 必修二 Unit3 《Computers ---Reading》 课件 (共32张PPT)


computer.
c. The computer has been sent to explore
the Moon and Mars.
d. The computer began to simplify
difficult sums.
A. a. b. c. d.
B. b. c. a. d.
C. d. a. c. b.
Computers were used in offices and homes. Computers connect people all over the world together.
Scanning to get
detail information
Scanning
Reading Comprehension III
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?
C. Charles Turing. D. Alan Babbage.
2. When was the “universal machine” built?
A. In 1822.
B. In 1642.
C. In 1936.
D. In 1970.
Scanning
3. When the computer the biggest?
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Unit 3 Computers
Learning Aims
1. To learn about something about computers.
2. Reading and understanding, catching the history and information of the passage“who am I ?”.
Since the 1970s many new applications
Para III:
have been found out for me.
Topic sentence
Paragraph 1
Over time I have been changed quite a lot.
Supporting 1 calculating machine
these years?
Who am I ?
Skimming(Fast reading)
1. Who is the speaker –“I”—in this story?“ I ” am a _____c_o_m_p_u_t.er
2. What’s the main idea of this passage? A. The development of computers. B. The development and the applications of
Can you tell the development of computers? What do they have in common?
abacus
calculator
huge comlaptop
PC
What’s next?
What do you think will be the next development of computers?
Warming up——Guessing game
I can be used for calculating. Besides, I can also be used to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information…Who am I?
details
2 transistors
3 chips
4 network
5 World Wide Web
Paragraph 3
Topic
Since the 1970s many new
sentence applications have been found for me.
Supporting 1 communications
What bad influences may computers have on us?
Warming up——Guessing game
I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. QQ,BYD, Benz and BMW are some famous kinds of me. Who am I?
Many new applications have been found for me, such as communications
finance/ trade/ robots/ mobile phones/ medical operations/ space Rockets.
What roles do computers play in the life of human beings?
Warming up——Guessing game
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?
T smaller. 3. Over time I have large memory so that I will not forget anything I have been told.
T 4. I was able to share my knowledge with others through the World Wide Web in the early 1960s.
details
2 analytical machine
3 universal machine
4 PC
5 laptop
Paragraph 2
Topic sentence
These changes only became possible as my memory improved.
Supporting 1 tubes
Warming up——Guessing game
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?
1. Help with school work 2. Play games 3. Send or receive emails 4. Listen to music and watch films 5. Chat online 6. Search for information 7. Beautify photos 8. Online shopping
_a_n_d__h_o_m__e_s_____
Read para 2 and then tell the statement true or false. (1 min)
F 1. My shape didn’t change even though my memory improved.
F The information was stored in tubes, then o2n. TtrhaenoslidsteorrIs amnd, tlhaetelraorgnetrhIehcahvipesb. ecome. As I have grown older I have also grown
• What type of writing is it? expository writing 说明文
Tips: It often has a clear structure, which makes it easy for us to find the answers to the questions.
Warming up——Guessing game
I am a machine that you use to talk to other people even in a far-away place. I am connected by wire or radio. Now each of us often has a number. Who am I?
3.Functional item, how to tell the history about the computer.
Warming up——Guessing game
With the development of science and technology, many new things appear in human being’s life. Let’s guess what they are:
2. Where can we usually find the topic sentence? The beginning of the passage.
Task: The passage has three paragraphs. Find out the topic sentence of each paragraph, and the details that are used to support the topic sentences. Then complete the chart in activity 2.
details
2 finance 3 trade
4 robots 5 mobile phones
6 medical operations
7 space rockets
8 providing a life of high
quality
Read para 1 and and finish the timeline. (2 mins)
Time
Machine
In 1642
A _c_a_lc_u_l_a_t_in_g_
machine
About in _1_8_2_2_ An analytical
machine
In 1936
A _u_n_iv_e_r_s_a_l
machine
Applications
_S_i_m_p_l_if_y_difficult sums Think__lo_g_i_c_a_ll_y_
computers. C. A machine which is simple-minded. D. Computers may replace human beings.
3. The text is written in an order of __ti_m_e_ .