仁爱科普版九年级上册Unit 4 Amazing Science Topic 1 When was it invented？Section D课件(共19张PPT)

(共19张PPT)
Unit 4 Amazing Science
Topic 1 When was it invented？
Section D
By the end of the class, you will be able to
1. Master the following words, phrases and sentences:
Words： mark, explorer
Phrases: find out, in…, direction, as long as, work well, the rest of the time, be used to, the shape of
Sentences：This method worked well at night as long as the weather was good and the stars could be seen.
2. 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 our own inventions.
The radio was invented by Guglielmo Marconi in 1895.
When was the digital camera developed It was developed in the 1970s.
Where was it developed It was developed in Japan.
What is a rocket used for It is used for sending satellites or spaceships into space.
Read through Sections A-C and pay attention to the underlined parts.
Passive Voice (Ⅱ)
一、单项选择
( ) 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.
They made our school more beautiful.
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 _____ by mistake about one hundred years ago.
A. were invented B. invented C. are invented
C
C
B
C
A
二、补全被动句
1. You are late, all the tickets __________(sell) out an hour ago.
2. This type of cellphone ____________(make) in Shenzhen.
3. I _________________ (not invite) to yesterday’s party.
4. ________ those machines __________(check) this morning
5. Many trees and flowers ______________(plant) in our school last year, and they made our school a beautiful garden.
were sold
was made
wasn’t invited
Were
checked
were planted
三、改为被动句
1. People use radios to learn English in the past.
_____________________________________________
2. Jack will show me the photo.
______________________________________________
3. They have raised much money for the Project Hope.
______________________________________________
4. I often hear Mary sing English songs at home.
_______________________________________________
5. We mustn’t throw litter about.
________________________________________________
6. People can visit planets like Mars.
________________________________________________
Radios were used to learn English in the past.
The photo will be shown to me.
Much money has been raised for the Project Hope.
Mary is often heard to sing English songs at home.
Litter mustn’t be thrown about.
Planets like Mars can be visited.
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.
Functions
How well do you know Sections A-C Now do the following tasks and check.
If you lose your cellphone, how can you find it
We can use the GPS.
1a Read the passage and discuss the questions on Page 88.
Where Are We
Where are we That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn’t work so well during the rest of the time. That was a problem.
Today, the problem has been solved by the Global Postitoning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are.
1. How did the early explorers know where they were
2. What’s the disadvantage of using the stars as guiding marks
They found out where they were by using stars.
Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen.
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. We can use it at any time, in any place and in any weather to find out our position. It is very useful.
1.探索我们的世界
2.空中的星星
3.早期的探险者
4.找到，弄明白
5.在哪个方向
6.奏效；可行
7.只要
8.在其余时间里
9.在任何时间
10.在任何地点
11.在任何天气下
12.地球的形状
explore our world
the stars in the sky
the early explorers
find out
in which direction
work well
as long as
the rest of the time
at any time
in any place
in any weather
the shape of the earth
1. This is Kangkang’s invention. Look at the information and the picture.
What do you think of it Discuss with your partners.
Describing Your Invention.
Project
Name: Plar (plane-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.
Describing Your Invention.
Project
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.
一、单项选择
( ) 1. This method sounds _____，and works _____ in our studies.
A. well;well B. good;good C. good;well
( ) 2. The cake smells _____ and sells_____ .
A. well;well B. nice;good C. good;well
( ) 3. I have no idea what ______while I was asleep.
A. happened B. was happened C. happens
( ) 4. In some countries, tea _____before meals.
A. is serving B. is served C. served
C
C
A
B
二、根据首字母提示完成短文
Thanks to GPS, we can 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.
here
osition
sed
ky
xplore
We learn:
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 our own inventions.
We can:
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. Memorize the useful expressions and key sentences that we learn today.
2. Write a passage to describe your invention.
3. Finish Section D in your workbook.
4. Preview Unit 5 Topic 1 Section A.