高中英语人教版必修二Unit3Reading课件

Task 4 Post-reading
Discussion
What are the advantages and disadvantages of the computers? In my opinion,I can use the computer to….
Advantages
We can use the compuers to… 1. use a computer for school work 2. play games on the computer 3. send emails to friends 4. download music and films 5. go shopping on line 6. use QQ to make friends 7. communicate with others
Homework:
1. Review the passage, find out the language points in the passage.
2. Finish Exercise 1and 2 in Learning about Language on pag I?
3.I am a machine, which you can use to play games, watch movies, listen to music, communicate with your friends, gather information… Who am I ?
in brainpower. 1940s:Computer had grown as large as a room. 1960s: The first family of computers was connected to each other. 1970s: Computers were used in officers and homes. Computers connect people all over the world Now: together.
It is a computer.
4.Match the main ideas and the paragraphs. These changes only became possible as my memory Para 1: improved. Since the 1970s many new Para 2: applications have been found for me. Para 3: Over time I have been changed quite a lot.
True or False
1. Alan Turing built an Machine to a Analytical universal machine F solve any mathematical problems. 2. People began to realize that the computer got Tcleverer and quicker with time passing. 3. The computer began to serve the human race Fsince it was brought into people’s homes. its birth 4. Since the 1970s, the computer was used by T around the world through the Internet. Ipeople became small and thin but I got cleverer and 5.cleverer, the computer is, the more quicker and quicker. And my memory memory FThe larger it has. so large that I couldn’t believe it! became
A computer
Nowadays computers play a very important role in our daily life .
What do you know about computers?
What English words do you know about computers?
Welcome
Guessing
1. I am a machine which is a good
helper in doing house work. I wash clothes for people. Who am I?
washing machine
2. A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number.
Conclusion There is no doubt that computer has two sides, too. If we make good use of it, it will make our lives more colorful and convenient. But don’t lose yourself in playing computers. Just remember: Keep fit, study well and work hard.
Task 3:
Let’s do
summary
Fill in the blanks: I began as a _______ ________ calculating machine in 1642 in France. In 1822 I was built as an Analytical Machine Then in 1936 Alan Turing _____ ______. universal ______. machine wrote a book and built a _______ gone by I have been made As the years have___ ___, smaller and____ smaller ___ ___ but I got ____ ____ cleverer and ___, cleverer quicker and quicker ____ __ ____. In the 1960s they gave me a family____ __ __ Now people call it connected by_____. a network the Internet. I was _____ ____ ___ in brought____ into people’s homes the 1970s.So I became PC. Since my birth I have truly been built to serve the human race.
8. use the Internet to search for information 9. surf the web for fun 10. read news both at home and abroad, read books and magazines
Disadvantages 1.Some students may get too addicted (沉 溺于)to it . 2. Some students waste too much time in playing computer games. 3. Some students spend too much time in chatting with others and may be cheated (欺骗)by someone on line. 4. As a result, they have little time to study 5. It is bad for our eyes and health to spend long time in front of computers.
晶体管
人工智能
科技革命
功能
Task 1: Skimming
Listen to the tape and answer these questions.
1. Who is the speaker in this story?
2. we can know that the text time is written in an order of___ 3. 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.
New Words and Expressions
Intelligence Analytical machine Universal machine Transistor Artificial intelligence Technological revolution function
智力 分析机 通用机
Task2 Careful reading
1642:
timeline
The computer began as a calculating machine.
1822: the Analytical Machine was built by Charles Babbage.