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Unit 4 Amazing Science
Topic 1 When was it invented
Section D
Learning aims
一、掌握以下单词：explorer, mark, man-made, system等。
二、引导学生自主归纳本单元语法——一般过去时的被动语态。
三、能够根据不同的阅读目的运用阅读策略获取信息，如猜测词汇意思、 略读、寻读等，培养“读”的语言能力。
Review
A: ________________________
A: ________________________
A: ________________________
B: It's made from grapes.
B: It's used for drinking.
B: It's developed in 1982.
A: ________________________
B: It's invented in France.
What is red wine made from
What is red wine used for
When was red wine developed
Where was red wine invented
Passive Voice (Ⅱ)
The radio was invented by Guglielmo Marconi in 1895.
When was the digital camera developed
Grammar
What is a rocket used for
Where was it developed
It was developed in the 1970s.
It is used for sending satellites or spaceships into space.
It was developed in Japan.
一般过去时的被动语态
was/were done
( ) 1. A big supermarket _____in our city last year.
A. is built B. were built C. was built
( ) 2. Could you tell me who the radio ____ by
A. invents B. invented C. was invented
( ) 3. Many trees and flowers _____ in our school last year.
A. have planted B. were planted C. planted
( ) 4. The children ____ swim last month and they can swim
very well now.
A. are taught B. were taught C. were taught to
( ) 5. It is said that potato chips _____about one hundred years ago.
A. were invented B. invented C. are invented
C
B
C
A
C
Paper ____________ (invent) by Cai Lun in ancient China.
I __________ (teach) in the middle school in China.
The school library __________ (close) yesterday because of the heavy rain.
These new computers __________ (not use) very often. They are still good.
A lot of trees _________ (plant) in our city last spring to improve the environment.
Kangkang ___________ (wash) vegetables carefully every day.
The letter ________ (send) by my brother two days ago, but I haven't received it.
Mobile phones ______________ (not allow) in the exam room. It's a strict rule.
A young writer ___________ (write) the famous story in 2020.
Our classroom ____________ (clean) every morning by the students on duty.
was invented
teach
was closed
are not used
were planted
washes
was sent
are not allowed
wrote
is cleaned
先观语态再观时态
1. People used radios to learn English in the past.
_____________________________________________
2. Jack showed the photo to me.
______________________________________________
3. They raised much money for the Project Hope.
______________________________________________
4. I often hear Mary sing English songs at home.
_______________________________________________
5. We mustn’t throw litter around.
________________________________________________
6. People can visit planets like Mars.
_________________________________________________
Radios were used to learn English by people in the past.
The photo was shown to me by Jack.
Much money was raised for the Project Hope by them.
Mary is often heard to sing English songs at home by me.
Litter mustn’t be thrown around by us.
Planets like Mars can be visited by people.
感官动词变被动要还原to
Functions
I wish I could go into space some day.
I hope your dream will come true.
It’s said that he invented more than two thousand things during his life.
Inventing is interesting and exciting and everyone can be an inventor.
我希望有一天能进入太空。
我希望你梦想成真。
据说他一生中发明了两千多样东西。
发明是有趣和兴奋的，并且每个人都能成为发明家。
Fast-reading
How does the writer start the passage ______
A. Giving an example
B. Listing numbers
C. Showing an opinion
D. Asking a question
1a
[Task 2]
Divide the text into 3 parts.
D
Careful-reading
1a
Read and answer the question.
1. How did the early explorers know where they were
2. What’s the disadvantage of using the stars as guiding marks
Using stars, they could find out where they were.
It didn't work well at times. Because in the daytime or in bad weather, we couldn't see stars.
Careful-reading
1a
Read and answer the question.
3. What is a GPS Is it useful to use
4. What do you think the GPS will be used for in the future
It is like a man-made star.
Yes, it is. Because we can use it at any time, in any place and in any weather to find out our position.
① It will help self-driving cars run safely.
② It will be used in farming so that farmers don't need to water vegetables themselves.
③ It can be used for helping people in need, because police or doctors can find them quickly.
Post-reading
1a
Fill in the blanks.
Thanks to GPS, we can exactly know w _______ we are now. GPS is like a man-made “star”. It can be u______ in any place and any weather condition to find out our p_________. In the past, the early explorers had to use stars in the s_____ to tell them where they were. However, this method didn’t work well when the weather was bad. So GPS is a great invention that can help humans to better e_________ our planets and d__________ where we are.
here
osition
sed
ky
xplore
iscover
Project
Describing Your Invention
1. This is Kangkang’s invention. Look at the information and the picture. What do you think of it Discuss with your partners.
Name: Plar (plan-car)
Inventor: Kangkang
Year: 2014
Use: Both flying and driving
2. Design your own invention. Draw a picture of it and write down the information about it.
Name :____________
Inventor:___________
Year:_____________
Use:______________
3. Show the picture of your invention and describe it to the class.
4. Discuss in groups to decide which is the most useful /interesting/
funny invention.
Project
Describing Your Invention
We learn:
We can:
Summary
1. Some words :
mark, explorer
2. Some phrases:
find out, in …, direction, as long as, work well, the rest of the time, be used to, the shape of
3. Some sentences:
This method worked well at night as long as the weather was good and the stars could be seen.
1. Use the passive voice of the simple past tense more properly.
2. Talk about new technology GPS.
3. Develope our imagination and creativity by designing inventions.
Thank you !
Thanks!
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