Unit 4 Topic 1 When was it invented Section D课件(共15张PPT)

(共15张PPT)
Unit 4 Topic 1
When was it invented
Section D
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.
学习目标
What’s it used for
It’s used for listening to music.
What’s it made of
It’s made of plastic.
Where was it invented
It was invented in Korea.
When was it invented
It was invented in 1998.
新课讲授
What’s it used for
It’s used for communicating easily.
What’s it made of
It’s made of plastic and metal.
Where was it invented
It was invented in America.
When was it invented
It was invented in 1973.
What method did you use to find your lost cellphone
GPS 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. The early explorers used the stars as landmarks to know where they were and in which direction they were going. This method worked well at night as long as the weather was good. But it didn’t work so well during the rest of the time.
Let’s use the GPS.
n.探险者,勘探者
1) Using _______, they could find out where they were.
A. the sun B. the stars
C. the moon D. the earth
2) The Global Positioning System is like _________.
A. a man-made star B. a man-made sun
C. earth D. a circle
B
A
Read the passage and choose the correct answers.
Read the passage and discuss the questions on Page 88.
1. How did the early explorers know where they were
They found out where they were by using stars.
2. What’s the disadvantage of using the stars as guiding marks
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
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.
4. What do you think the GPS will be used for in the future
…
Key words
explore
explorer, mark
find out, in…direction
work well, as long as
the rest of the time
solve, like, use, the shape of
great invention
Retell it !
Grammar
Passive Voice (Ⅱ)
The radio was invented by Guglielmo Marconi in 1895.
When was the digital camera developed
Where was it developed
What is a rocket used for
It was developed in the 1970s.
It was developed in Japan.
It is used for sending satellites or spaceships into space.
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.
Passive voice 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.
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
B
C
A
C
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
were made
were/was　+　v.的过去分词
wasn’t invited
Were
checked
were planted
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
Project
2. Design your own invention. Draw a picture of it and write down the information about it.
Name :____________
Inventor:___________
Year:_____________
Use:______________
Project 2
Describing Your Invention
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.
1. Memorize the useful expressions and key sentences which we learn today.
2. Preview Unit 4 Topic 2 Section A.
Homework