u4computers 学案

9A Unit 4 Computers Reading
课前自主学习：
一、翻译：
1 __________adj.极小的
2 ___________ n.计算 3__________n..忽略的
4_____________n.速度 5 _________ v. 操作 6. _______ n. 铁路系统
7. depend on _______ 8. in addition _______ 9. happen to... _______
10. be unaware of _______ 11. at a faster speed _______ 二．Think about computers and the uses of computers。

（考虑计算机及其应用）学习过程While-reading
Task 1 Match the main ideas with the paragraphs.
paragraph 1 The uses of computers in daily life
paragraph 2 The relationship between human beings and computers in the future paragraph 3 The sizes of computers in different times
Task 2 Read the passage Computer facts and do the exercises. （To or F）
1. There may be one computer inside your TV.
2. In fact, we depend on computers more than we realize.
3. Computers can fly planes and spaceships.
4. Computers can produce new ideas.
5. Computers are changing our lives now.
Task 3 Read the passage again and answer the following questions:
1. When are the first computers bigger than cars ?
2. Why don’t people notice (注意到) sometimes ?
3. We use computers to do many things. Give examples.
4. Can we use computers to draw things ?
5. Are computers cleverer than man (人类)?
6. Will people have nothing to do if computers can do all our jobs？
Post- reading
Task 3 Put the following sentences in the right places of the article.
1. They are super calculators.
2. They may also be good teachers.
3. You may also have one in your watch or MP3 player.
Task 4 Target discussion Underline the phrases &sentences that you think are important .
Key points of the passage
• be unaware of... 忽略，没有意识到：Some computers are tiny. You may be unaware of them. • depend on... 依赖，依靠：You depend on computers more than you realize.
• In addition 另外，除此以外：I like music. In addition, I like reading.
• at a ... speed 以速度：They can calculate at a faster speed. 。

• happen to ... 发生到……上：What will happen to us if computers can do all our jobs?
• change one’s lives 改变某人的生活： Computers may change our lives
课堂检测
一．综合阅读
(1) In the 1940s, the first computers were bigger than cars. Now computers are becoming (2) __ and better.
Some computers are (3) tiny. You may be unaware of them. There is probably one inside your TV or washing machine. You depend on computers more than you realize.
We can use computers to calculate. They can calculate at a faster speed than we can and almost ne ver give
wrong answers. We can also type and draw things with them. ( 4) _另外 _, computers can do important
jobs like operating railways and （ 5）_____ planes and spaceships.
The answer is “No”. Your brain can produce new ideas but computers cannot. However, one day c omputers may be able to do a better job than (6 ) human beings. For example, they may be better t han doctors at doing their job.
What will happen to us if computers can do all our jobs? Will we have nothing to do? Computers may change our lives, but will (7) they make them better?
1.译为汉语 ________________
2. 填入一个词语____________________
3.同义词__________________
4. 译为汉语____________________
5. 填入一个词语_______________
6.同义词语______________________
7. “they “ refer to （指代）_________
二．Change the words or phrases :
!. Some computers are very small.----- Some computers are _____.
2. You may not notice them.---------- You may be _____ _____ them.
3. We can use computers to calculate.------ We can calculate _____ computers.
4. Computers may be able to do better .------ Computers _____do better. 三．Read the passage again and complete the chart below.
Paragraph 1 Supporting details
Topic sentence Smaller and better
Paragraph 2 Supporting details
We can do many things with computers.
Paragraph 3 Supporting details
A computer may be better than human beings.
四课后作业 Homework for today
1. Read the passage fluently.
2. Copy the key words，phrases and sentences。

3. Draw a spider gram about the reading passage .
4. Finish the article about computers for our school magazine.。