高中英语人教版必修三Unit 4 Astronomy：the science of the stars warming up and reading-课件（共44张PPT）

Unit 4
Astronomy:
the science of the stars

Dan Amy
Big ban
Have you heard of these terms?
Black hole
Milky?Way?galaxy?
?Solar?system?
Quiz
1.Who wrote “The Origin of Species ” (物种起源)?
Newton
Einstein
Charles Darwin
2.How many planets are there in the Solar System?
A 7 B 8 C 9
4. Which one belongs to reptile?
A. frog B. snake C. duck
D. Fish E. bird F. dog
3. Which one belongs to amphibian?
5. Which one belongs to mammal?
A
B
F
6. Which gas is the most important for life?
carbon dioxide (CO2 )

B. oxygen (O2)

C. nitrogen (N2)
Chinese legend:Pangu separates the sky from the earth

The development of the life
breath
winds and clouds
voice
thunder
left eye
the sun
right eye
the moon
blood
the rivers
veins
the roads

Chinese legend :The Goddess
Nuwa mended the heaven
and created human beings
from the clay(粘土).
Religious Beliefs
According to Bible , God created the world in seven days.

Day 1: God created Day and Night.
Day 2: God created sky.
Day 3: God created dry land—the earth, and seas.
Day 4:God created great lights(the sun, the moon) and stars.
Day 5: God created living things in the air and sea.
Day 6: God created the land animals and the first man.
Day 7: God rested and called this day Holy.
Religious Beliefs
Reading
How Life Began on the Earth
Reading
Reading
How life began on the earth
Main idea of each paragraph
Paragraph 1:
Paragraph 2:
Paragraph 3:
Paragraph 4:
The importance of water for life
The development of plants and animals on the earth
The formation of the earth
A widely accepted theory about the formation of the universe
d
c
a
b
e. The arrival of humans and their impact on the earth
Paragraph 5:

e
1. Big Bang
2. a cloud of dust
3. A solid globe
4. exploded with fire and rock
5. produce the water vapour, carbon dioxide---atmosphere
How did the earth come into being?
Para2,3
6. cooled down
7. water appeared
8. Dissolved harmful gases and acid
The development of life
Para4,5
extremely small plants
First
early shellfish
Stage 1: The development of life in water
all sorts of fish
green plants on land
insects on land
Stage 2: The development of life on land Next
amphibians on land and in the water
Green plants grew into forests Later
reptiles on land
dinosaurs on land
(1) What life developed after forests
appeared?
After that
mammals on land
(2) What life developed after dinosaurs?
small clever animals
(3) What life developed after mammals?
Finally
How did the earth come into being?
After a ‘Big Bang’ of the universe, for billions of years, the earth was just a cloud of ____, which settled into a solid _____ later. The earth ________ loudly with fire and rock, producing water _________ and gases, which were to make the earth’s __________. As the earth cooled down, _____ began to appeared on its surface, which was to be ___________ to the development of life.
dust
globe
exploded
vapour
atmosphere
water
fundamental
How did life come into being?
Millions of years later, an extremely small ________ appeared on the surface of water, followed by the development of ________ and all sorts of fish. Next, green plants began to grow on ____ , with which land ________such as insects, amphibians appeared. When plants grew into ______, reptiles and dinosaurs appeared. With the sudden _____________ of dinosaurs, mammals began their life on the earth. It was about 2.6 million years ago that _______ ________ came into existence.
plants
shellfish
land
animals
forests
disappearance
human
beings
Work in pairs. Put the order of development
of life into a timeline.
While-reading
10
7
3
8
4
9
6
1
5
2
12
11
1. Insects and amphibians appeared.
3. The earth became a solid ball.
5. Reptiles appeared.
7. The earth was a cloud of dust.
9. Shellfish and other fish appeared.
11. Clever animals with hands and feet appeared.
2. Dinosaurs appeared.
4. Small plants grew on the water.
6. Plants began to grow on dry land.
8. Water appeared on the earth.
10. The universe began with a "Big Bang".
12. Mammals appeared.
1. Why was the earth different from the other planets?
Because water remained on the earth.
2. Why did the plants grow before the animals came?
Because plants provided oxygen for animals to breathe.
3. Why is it wrong to show films with dinosaurs and people together?
Because dinosaurs died out long before human beings developed on the earth.
4. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it?
The name is Pluto. Scientists now think it is too small to be called a planet.
5. What problem is caused by human beings?
Human beings cause global warming.
After the , the earth was just . Slowly, it began to combine into moving around the sun. After it exploded loudly, the explosion produced ,
_________________________________
and other gases.
“Big Bang”
a cloud of dust
carbon, nitrogen
the water vapour
a solid globe
Retell

As the earth cooled down, _____ began to appear on its surface. Because of water and other useful gases, and later
___________________________ appeared.Many millions of years later,
began to grow , which led to the appearance of .
water
small plants grew
shellfish and other fish
insects and amphibians
the first plants
on land

When the plants grew into forests, . Later, . When they disappeared, became more important. At last, _________
_______ have became the most important animals on the planet.
reptiles appeared
dinosaurs developed
mammals
human
beings

( ) 1. No one knows how the earth came into existence.
( ) 2. Stars and other bodies were created after a ‘Big
Bang’ of the universe.
( ) 3. After billions of years, the earth exploded and
produced gases, which were to become atmosphere
of the earth.
( ) 4. There is water on earth as well as on Mars.
Skimming
True or False
T
T
T
F
( ) 5. Plants appeared later than fish.
( ) 6. Land animals came into being as green plants
began to grow on land.
( ) 7. Scientists have found out why dinosaur
suddenly disappeared.
( ) 8. It was 2.6 million years ago that human beings
appeared on the earth.
F
T
T
F
Para. 1 How the earth came into being.
Para. 2 The importance of water for life.
Para. 3 A theory about how the universe
came into being.
Para. 4 The arrival of humans and their
impact on the earth.
Para. 5 The development of plants and
animals on the earth.
Put the correct time order of development of life
1 Insects and amphibians appeared.
2 Dinosaurs appeared.
3 The earth became a solid ball.
4 Small plants grew on the water.
5 Reptiles appeared.
6 Plants began to grow on dry land.
scanning
7 The earth was a cloud of dust.
8 Water appeared on the earth.
9 Shellfish and other fish appeared.
10 The universe began with a “Big Bang”.
11 Clever animals with hands and feet appeared.
12 Mammals appeared.
10 7 3 8 4 9 6 1 5 2 12 11
Time order:
Group Discussion
1. What problems are caused by human beings?
2. How to solve these problems?
Homework
1. Find out language points and noun clauses in the reading passage. Discuss and analyse them.
2. Writing: Rewrite the passage and use as many language points and new words as possible.
We have only one earth!
We should take care of the earth!