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阅读新人教版必修二unit3


Spelling
? 1.operator___________(vi) operate ? 2,simplify_________(adj) simple
logically ? 3, logical_________ (adv) technological (adj) ? 4,technology__________ intelligence ? 5,

intelligent___________

(n)

reality ? 6,real_________ (n) personally ? 7,personal__________ (adv) financial ? 8,finance__________(adj)

? 9,explore__________ (n) solution ? 10,solve _____________(n)

exploration

Warming up
How much do you know about a computer???

Give the English name of the following pictures of the computer components (组件)

What is it in English??

Main board(主板)

What is it in English??

CPU (central processing Unit)
中央处理器

What is it in English??

hard disc

What is it in English??

Keyboard (键 盘)

What is it in English??
monitor

screen

What is it in English??

mouse
鼠标

DVD ROM
只读存储器

Work out the names
(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.) (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. monitor screen

mouse
keyboard hard disk

DVD-ROM

abacus

calculator

A huge computer
laptop

Palmtop (掌上电 脑)

A PC

What’s next?

work for us in Mars(火星)

carry things

work in wars (战斗)

仿真机器人

entertainment
娱乐 What do you think will be the next development?

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.

was built as an Analytical Machine by Charles Babbage.”
●“My real father was Alan Turing

●I

....” ● I was able to share my knowledge with others through the World Wide Web.

Scanning

Timeline

1642:_______________________________________________ The computer began as a calculating machine 1822:The Analytical Machine was made by Charles Babbage. 1936:_____________________________________________ The computer grew rapidly both in size

and in brainpower. _________________________________________
The computer had grown as large as a room. 1940s:_________________________________________ 1960s The first family of computers was connected to _____:
each other.

Computers were used in offices and homes. 1970s:_________________________________________
Now:__________________________________________ Computers connect people all over the

world together. __________________________________________

Discussion
What are the advantages and disadvantages of the computers? In my opinion,I can use the computer to….

(1)In one’s opinion 按某人的意见,据某人看来

按照他们的意见,我们应该把会议推迟到下星期五举行。 In their opinion we should _______the meeting put off ______________,
until next Friday. (2)In the opinion of 据...看来 据很多人看来,这是个好计划。

In the opinion of many people, this is a good plan. ___________________________________________
(3)Have a good /bad/high /low opinion of

对评价好/坏/高/低

=Think well/badly/highly/lowly of

We can use the computer to…….

Watch movies

listen to music search for …

communicate with…

do shopping

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

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 ? It is bad for our eyes and health to spend long time in front of computers.

Changes of the machine
Calculating machine Analytical machine Universal machine

Machine with new transistor

Machine with artificial intelligence

A family connected by a network

A family used by the Internet

Summary about the text.

began as The computer __________ a calculating machine Analytical Machine in 1642, then in 1822, it was built as an___________ Charles Babbage by ________________. At the year of 1936, Alan wrote a book Turing ____________ to describe how computers could be made work , and build a “universal _____________to mathematical problem machine” to solve_________________. With the development of information technology __________________

in the 1960s, computers had new smaller and smaller transistors __________and became_______________, then were connected to each other by a network gone by _________. As the years had __________, brought into computers were___________,people’s homes. Now computers have become tools the most important _________to connect people _____________all over the world together.

Expressing Function
Do you think the computer really helps to your study? Why?

Make good use of it but never get trapped by it.

Giving an ? In my opinion, … opinion ? I believe that… Reasonin g
? I agree because…
? I disagree because…

? I think that…

Homework:
1. Read the passage fluently. 2. Do Ex on 导学单词和课 本上的单词题. 3.Underlie the important language points.


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