内容正文:
九上Unit 4 Amazing Science
Topic 1 When was it invented?
Section C
I、Master the new words and phrases:
invention, list, crayon, process, thought, silly, brainstorm, evaluate, detailed, redesign, imagination, balloon, gun, robot, keyboard...
II、Know how to be an inventor and you can be an inventor.
III、Be able to talk about the most important inventions with your partner.
Learning aims
( ) 3. —I didn’t see you at Kate’s party last night. Why didn’t you go?
—Oh, because I _____.
A. didn’t invite B. wasn’t invited C. don’t invite D. am not invited
( )2. The style of our dresses is the same, but the color of my dress is
different _____. So mine is more beautiful.
A. in you B. in yours C. from yours D. from you
Review
( )1. —Who will go to Germany with you next week, Lucy or Lily?
—Both. Because ____ Lucy ____ Lily is good at German.
A. both; and B. Either; or C. not only; but also D. neither; nor
I. Choose the right answer. You can do it.
C
C
B
Review
1. Computers are ______ (wide) ______ (use) in our daily life.
People can’t live without them.
2. It is ______ (say) that there _______ (be) a wonderful film in our
school in the open air next week.
3. You’d better __________ (not spend) too much time ________ (play)
phone games during school time.
4. The first jeans ______________ (produce) in 1885, but at that time, they ______________ (call) jeans and they were just designed for worker.
II. Fill in the blanks with the correct form given words.
widely used
said will be
not spend playing
were produced
were not called
Pre-reading
New words
invention
/ɪnˈvenʃn/
v. 发明,创造
list /list/
v. 列清单;
n. 名单;目录;清单
detailed
/dɪˈteɪld/ /ˈdi:teɪld/
adj. 详细的
redesign
/,ri:dɪˈzaɪn/
v. 重新设计
imagination
/ɪ,mædʒɪˈneɪʃn/
n. 想象力,想象
New words
crayon
/ˈkreɪən/
n. 彩色铅笔(粉笔、蜡笔)等
thought
/θɔ:t/
n. 想法,看法,
主意
silly
/ˈsɪli/
adj. 愚蠢的,傻的
brainstorm
/ˈbreɪnstɔ:(r)m/
v. 集思广益,
动脑筋
evaluate
/ɪˈvæljueɪt/
v. 估值,评价,评估
balloon
/bəˈlu:n/
n. 气球;热气球
gun
/gʌn/
n. 枪,炮
robot
/ˈrəʊbɒt/
n. 机器人
keyboard
/ˈki:bɔ:d/
n. 键盘
While-reading
Read and understand.
1a
Work in groups and discuss the questions before reading.
What is an invention?
invention n. 发明,创造
invent v. 发明,创造
inventor n. 发明者,发明家
An invention may be a new product or a new way of doing things.
2. List some inventions that you know and their inventors.
computer lock television light bulb
chopsticks crayon …
3. Do you think you can be an inventor? Why?
Yes, inventing is interesting and exciting and everyone
can be an inventor.
Work in groups and discuss the questions before reading.
Read and understand.
1a
1b
Read 1a and put the sentences in the correct places .
A. Draw your invention. B. Name your invention.
C. Test your invention. D. Use your imagination.
E. Plan and design your invention.
___ You can have wild and crazy thoughts. Remember that no idea is too silly. Many people laughed at the Wright brothers and said they would never fly. But they weren’t discouraged by what people said. That’s why now we have planes.
D
You can have wild and crazy thoughts
imagination
1b
Read 1a and put the sentences in the correct places .
A. Draw your invention. B. Name your invention.
C. Test your invention. D. Use your imagination.
E. Plan and design your invention.
_______ Careful planning is important in the invention process. This is the time to brainstorm for ideas and to evaluate them.
_______ Make a detailed drawing of your invention so others will understand how your invention works.
E
planning
drawing
A
Plan
Draw
Make a model of your invention.
_______ See if your invention works as it is planned . If not, do more research, redesign it, and test it again.
_______ Every invention needs a name. Share your inventions with others.
1b
Read 1a and put the sentences in the correct places .
A. Draw your invention. B. Name your invention.
C. Test your invention. D. Use your imagination.
E. Plan and design your invention.
C
test it again
needs a name
B
Test
Name
Read 1a again and fill in the blanks.
1c
When you want to have an invention , first you must use your ____________. Then you should plan and design it. Careful planning is very _________ in the invention. Third, you should make a _______ drawing of your invention and make a model of it. If you want to make your invention more successful, you must ______ it again and again. After that, you _______ your invention. Last, remember that you should _______ your invention with others.
imagination
important
detailed
test
name
share
Watch the video and follow it.
Paragraph 1
Careful reading
An invention may be a new product or a new way of doing things. Inventions come about in many ways. Most of the time, inventions happen because someone works to solve a problem. Sometimes inventions are the result of accidents. Look at your schoolbags. You have pencils, pens, crayons, rulers and some books. None of these things was planted in fields. They were made in factories and invented by someone. Inventing is interesting and exciting and everyone can be an inventor. Do you want to be an inventor? There are a few simple steps to follow in the invention process.
Listen and follow, then find out the key points.
may be
对比:may be 谓语动词 maybe 副词
eg. Maybe you are right. = You may be right.
a new way of doing things
a way of doing sth. = a way to do sth.
做某事的方法
in many ways
在许多方面
1. Inventions come about in many way.
发明的产生有很多途径。
考点:
come about “产生,发生” ; come out “出版,开花”
辨析:come about, take place 与 happen
(1) come about 表示“发生,产生”,多指事情已经发生了,但还不知道为什么,常用于疑问句和否定句中。
(2) take place 指“有计划,有安排”地做什么。如:奥运会、活动等。
(3) happen 指偶然或突发性事件,意为“碰巧发生”,无计划和安排。如:车祸、地震等不幸的事等,或碰巧做了某事。
happen to do sth. “碰巧做某事”
Language points
闯关练习: 完成译句。
1.他在回家的路上,碰巧遇到了他的故交。
On his way home, he ________ ______ meet his old friend.
2. 这个年轻作家的第二本新作将在下个月出版。
The young writer’s second new work will _____ _____ ____ next month.
3. 我不能理解你一周迟到三次是怎么回事。
I’ll never understand how it ______ ______ that you were late three times a week.
happen to
be come out
came about
2. None of these things was/were planted in fields.
这些物品没有一样是种在田里的。
考点:
辨析:none 与 no one
(1) none 不仅指人也可指物,其后常接of 结构,即“none of + 名词/代词”。
当名词为复数时,谓语动词单复数均可。
eg. None of the students has/have finished their homework.
(2) no one 指人,其后不能接of 结构。作主语时,谓语动词要用单数。
eg. No one knows how old the tall tree is.
注意:no one 常用于回答who/which提出的问题,
none常用来回答how many/how much的特殊疑问句。
eg. —Who is in the room? — No one.
—How many students of Class 3 are there in the classroom?
—None.
Language points
闯关练习:
1. —Please don’t be angry with your son if he doesn’t pass the exam.
—I won’t. Because I know _____ of us is perfect after all.
A. none B. any C. either D. neither
2. No one but the Whites _____ the place so far.
A. visit B. visits C. have visited D. has visited
3. —How many children did you see in the park yesterday?
—_____.
A. Little B. No one C. Nobody D. None
4. —Who knows the answer to the question?
—_____.
A. Little B. No one C. Nobody D. None
A
D
D
B
Paragraph 2
Listen and follow, then find out the key points.
Use your imagination. You can have wild and crazy thoughts. Remember that no idea is too silly. Many people laughed at the Wright brothers and said they would never fly. But they weren’t discouraged by what people said. That’s why now we have planes.
laugh at sb.
嘲笑某人
discourage
vt. 阻止;使泄气/灰心;使丧失信心
discourage sb. from doing sth. 劝阻某人做某事
Paragraph 3-4
Listen and follow, then find out the key points.
Plan and design your invention. Careful planning is important in the invention process. This is the time to brainstorm for ideas and to evaluate them.
Draw your invention. Make a detailed drawing of your invention so others will understand how your invention works.
detailed adj. 详细的
detail n. 细节(复数:details)
Paragraph 5-8
Listen and follow, then find out the key points.
Make a model of your invention.
Test your invention. See if your invention works as it is planned . If not, do more research, redesign it, and test it again.
Name your invention. Every invention needs a name. Share your inventions with others.
if not
如果不
share...with...
与.......分享
1. a way of doing sth.
= a way to do sth.
2. come about
3. in many ways
4. laugh at
5. what people said
6. if not
7. share...with...
8.again and again
9. look like
做某事的方法
出现;发生
在许多方面
嘲笑
人们所说的
如果不
与......分享
反复
看起来像
Find out the key phrases from the text.
Post-reading
Can you list it?
1. An invention – come about –solve a problem– the result of –crayons—none of –be made in –interesting, exciting – inventor
–a few simple steps
2. Use your imagination– thought– silly – laugh at –be discouraged
3. Plan and design your invention– be important to –brainstorm– evaluate
4. Draw your invention—make a detailed drawing
5. Make a model
6. Test your invention --do more research
7. Name your invention
8. Share…with
Try to retell 1a
Discuss
2.Which is the least important invention ?Why?
1.What are the top 3 most important inventions? Why ?
Discuss with your partner which of the followings are the top 3 most important inventions and which is the least important invention. Then explain your choice to the class.
2
Example:
I think zero is the most important invention. It is said that it was invented by an Indian. It is a very interesting number. For example, I have only ten yuan. If you add five zeros after it for me, haha, I will be a rich man.
3
Do you know how to be an inventor? Do you want to invent something? Write a passage about your invention. The following questions may help you .
1. How do you come to the idea of your invention?
2. What does it look like?
3. What is it made of/from?
4. What’s it used for?
5. What are you going to name it?
Before writing, think more clearly and tell about the looks, uses, advantages and disadvantages of an object.
You can write it like this:
My invention is a robot. It is called “Superman”. There is a computer inside its body. It looks like a tiger. When you see it for the first time, you may be frightened. In fact, it is gentle and polite. It can help us do housework, such as cleaning a room, washing dishes, and making the bed. When the room is dirty, it will begin to work at once. It can also watch over a house instead of humans. It is careful, clever and hard-working. In short, this robot is very useful to us, though it can’t run or speak.
Complete the following words according to their first letters and meanings.
i________ n. the creation of something in the mind; the act of inventing
c________ n. a rod(棒) of colored wax(蜡) used for drawing
t________ n. an idea that you have in your mind
s________ adj. foolish
b________n. small thin inflatable(可充气的) rubber bag with narrow
neck
g________ n. a weapon(武器) from which bullets(子弹) or other
things are fired
r________ n. a machine that can move automatically(自动地)
k________ n. the set of keys that you press in order to operate it
nvention
rayon
hought
illy
alloon
un
obot
eyboard
Exercises
I. 根据语境,用方框中所给词的适当形式填空。
1. Let me make a __________ of the food and drink.
2. I don't think your __________ can work better than mine.
3. The boys play with mobile phones all day. How __________ they are!
4. I'll buy a sweeper __________ to help my mother do some cleaning.
5. The famous inventor has invented more than three hundred __________.
list
invent, robot, list, silly, think
thought(s)
silly
robot
inventions
II. 完成译句。
1.嘲笑别人是不礼貌的。
It's not polite to _______ _______ others.|
2. 他们的衣服是在工厂里生产的。
Their clothing is _______ _______ factories.
3. 这些树是我五年前种下的。
These trees _______ _______ by me five years ago.
4. 他们没人知道发生了什么事。
_______ _______ them knew what happened.
5. 你能告诉我昨晚的事故是怎样发生的吗?
Can you tell me how the accident last night _______ _______?
Exercises
laugh at
made in
were planted
None of
came about
Summary
We learn : 1.Some words: invention, crayon, thought,
silly, balloon, gun, robot, keyboard
2. Some phrases: laugh at,come come out,
the result of …, none of …
3. Some sentences:
Inventing is interesting and exciting and everyone
can be an inventor .
We can : 1. Talk about the process of an invention.
2. Write a passage about an invention.
Homework
Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section C in your workbook.
Write a passage about your invention.
Preview Section D.
Thank you!
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