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(共22张PPT)
Unit 4 Amazing Science
Topic 1 When was it invented
Section D
Warming up
Talk about your inventions in pairs.
When was it invented
What is it made of/from
What is it used for
…
E.g.
A: When was your invention
invented
B: It was invented ....
A: What’s it made of/from
B: It’s made of/from....
A: What’s it used for
B: It’s used for....
Among the following new inventions, which one can help us find the way
Warming up
A
B
C
Pre-reading
Vocabulary
n.探险者，勘探者
n.标示；记号；符号 v.做记号，做标记
n.体系，方法，制度
adj.人造的；非天然的
explorer
mark
system
man-made
Pre-reading
Before the GPS was invented, how could people find out where they were
By using the stars.
While-reading
Activity1: Read Para1 and fill in the blanks.
Using
the
stars.
People______________ where they were.
This method worked well at night ___________ the weather
was good.
It ____________________ during the rest of the time.
could find out
as long as
didn't worked so well
While-reading
Activity2: Read Para2 and finish
the mind-map.
The GPS
It is like a
_____________
We can use it at_________, in ________ and in ____________ to find out our position.
It can also __________ study the shape of the earth.
The GPS is a _____________that helps us explore our planet and discover where we are.
man-made star
be used to
any place
any time
any weather
great invention
While-reading
Activity3: Read the passage and answer the questions .
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
It didn’t work well when the weather was bad and the stars could not be seen.
While-reading
Activity3: Read the passage and answer the questions .
3. What is the GPS like
4. Is the GPS useful
It is like a man-made star.
Yes, it is.
Post-reading
根据课文内容，完成以下的短文。
Thanks to GPS, we can exactly know _______we are now. GPS is like a man-made “star”. It can be _____ in any place and any weather condition to ______ out our
position . In the past, the early explorers had to use stars in the ______ to tell them where they were, however, this method didn’t work well when the weather was bad. So GPS is a great _________ that can help humans to explore our planets better.
where
used
find
sky
invention
Listen to the passage and follow it in a low voice.
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.
Passive voice was /were +done
（一般过去时的被动语态）
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
Passive voice was /were +done
（一般过去时的被动语态）
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
I _______I _______ go into space some day.
我多么希望有一天能去太空。
I _______ your dream will _____________.
希望你梦想成真。
___________ he invented more than two thousand things _____________. 据说他在一生中发明了超过两千多种东西。
Inventing is interesting and exciting and everyone __________________. 发明是一件有趣又刺激的事，
人人都 能成为一名发明家。
Functions
hope come true
wish could
It's said that
during his life
can be an inventor
Exercises1：Choose the best answer.
( ) 1. As students, we ___ to bring mobile phones to school.
A. are allowed B. were allowed
C. aren't allowed D.weren't allowed
( ) 2. Could you tell me what the glassess are made___
A. in B. off C. from D. of
( ) 3. We are proud that 5G technology is developed __ China.
A. in B. as C. from D. of
C
D
A
Post-reading
Post-reading
Exercise2: complete the sentences with some phrases .
1. GPS可以帮我们快速找到我们所在的位置。
GPS can help us _______ _______ our position quickly.
2. 作为学生，只要我们肯努力，梦想一定会实现。
As students, ______ _____ ______ we study hard, our dream will
_____ ______ .
3. 现代科技在我们的日常生活中被广泛使用。
Modern technology ______ widely ______ in our daily life.
as long as
find out
come true
is used
随着科技的飞速发展，越来越多的创新发明出现在我们的生活中，请你写一篇关于科技的短文。
内容包括:1.你认为最有用的的发明是什么
2.这一发明对人们的生活有何影响？（至少2点）
3.谈谈你的感受。
Post-reading
Project: Discuss and write.
You can write like this:
With the development of technology, many inventions are widely(广泛地）used in our daily life, among the inventions, I think...is the most useful.
Thanks to..., we can ...Besides, ...What's more...
...
Example:
With the development of technology, many inventions are widely(广泛地）used in our daily life, among the inventions, I think GPS is the most useful.
Thanks to GPS, we can exactly know where we are now. GPS is like a man-made “star”. Besides, it can be used in any place and any weather condition to find out our position. What's more, It can also be used to study the shape of the earth. So GPS is a great invention.
All in all, Inventions make our life easier and more convenient. Let's try to be inventors.
Summary
We have learned:
一些重点词汇,如:explorer, mark, system,
man-made, find out, 等。
We can:
能够通过阅读理解文章大意，并按要求进行相关语言活动。能够正确运用所学被动语态句型描述事物。
We know:
How to write a composition about invention.
Homework
1. Finish Section D in your workbook.
2. Correct your composition and copy it
in your exercise book.

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