陕西省石泉县江南高级中学人教版高中英语必修三课件：Unit4AstronomyReading(共36张PPT)
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Read the paragraph 2 and 3 carefully and think about How the earth come into being?.
Detailed reading
This text can mainly divided into two stages
Stage 1 : The development of the earth (para 1—3)
Because dinosaurs died out long before human beings developed on the earth.
amphibians on land and in the water
Green plants grew into forests Later
(1) What life developed after forests appeared?
reptiles on land dinosaurs on land
2. What form was the earth after the “Big Bang”? The earth was still just a cloud of dust.
3. What made up the earth’s atmosphere after the earth exploded? Carbon, nitrogen, water vapour and other gases.
While-reading
Read the text quickly and write down the main idea for each paragraph.
Para. 1 Para. 2 Para. 3
Para. 4 Para. 5
The formation (形成) of the earth. The importance of water for life. A widely accepted theory
After that
(2) What life developed after dinosaurs? mammals on land
(3) What life developed after mammals?
Finally small clever animals
While-reading
• Work in pairs. Put the order of development of life into a timeline.
Βιβλιοθήκη Baidu
Stage 1: The development of life in water
First
extremely small plants
early shellfish
all sorts of fish
Stage 2: The development of life on
land
Next
green plants on land insects on land
Reading
How Life Began on the Earth
Scanning
Read the passage quickly and answer the questions. 1. When did the “Big Bang” happen? It happened several billion years ago.
1. Insects and
2. Dinosaurs appeared.
amphibians appeared.4. Small plants grew on
3. The earth became a solid ball.
5. Reptiles appeared.
7. The earth was a cloud of dust.
5. produce the water vapour, carbon dioxide---atmosphere
6. cooled down
7. water appeared
8. Dissolved harmful gases and acid
Para4,5 The development of life
Stage 2 : The development of life (para 4—5)
Para2,3
How did the earth come into being?
1. Big Bang
2. a cloud of dust
4. exploded with fire and rock
3. A solid globe
about the formation of the universe. The arrival of humans and their impact on the earth. The development of plants and animals on the earth.
While-reading
hands and feet
appeared.
12. Mammals appeared.
10 7 3 8 4 9 6 1 5 2 12 11
1. Why was the earth different from the other planets?
Because water remained on the earth.
the water. 6. Plants began to grow
on dry land. 8. Water appeared on the
9. Shellfish and other earth.
fish appeared.
10. The universe began
11. Clever animals with with a "Big Bang".
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?
Detailed reading
This text can mainly divided into two stages
Stage 1 : The development of the earth (para 1—3)
Because dinosaurs died out long before human beings developed on the earth.
amphibians on land and in the water
Green plants grew into forests Later
(1) What life developed after forests appeared?
reptiles on land dinosaurs on land
2. What form was the earth after the “Big Bang”? The earth was still just a cloud of dust.
3. What made up the earth’s atmosphere after the earth exploded? Carbon, nitrogen, water vapour and other gases.
While-reading
Read the text quickly and write down the main idea for each paragraph.
Para. 1 Para. 2 Para. 3
Para. 4 Para. 5
The formation (形成) of the earth. The importance of water for life. A widely accepted theory
After that
(2) What life developed after dinosaurs? mammals on land
(3) What life developed after mammals?
Finally small clever animals
While-reading
• Work in pairs. Put the order of development of life into a timeline.
Βιβλιοθήκη Baidu
Stage 1: The development of life in water
First
extremely small plants
early shellfish
all sorts of fish
Stage 2: The development of life on
land
Next
green plants on land insects on land
Reading
How Life Began on the Earth
Scanning
Read the passage quickly and answer the questions. 1. When did the “Big Bang” happen? It happened several billion years ago.
1. Insects and
2. Dinosaurs appeared.
amphibians appeared.4. Small plants grew on
3. The earth became a solid ball.
5. Reptiles appeared.
7. The earth was a cloud of dust.
5. produce the water vapour, carbon dioxide---atmosphere
6. cooled down
7. water appeared
8. Dissolved harmful gases and acid
Para4,5 The development of life
Stage 2 : The development of life (para 4—5)
Para2,3
How did the earth come into being?
1. Big Bang
2. a cloud of dust
4. exploded with fire and rock
3. A solid globe
about the formation of the universe. The arrival of humans and their impact on the earth. The development of plants and animals on the earth.
While-reading
hands and feet
appeared.
12. Mammals appeared.
10 7 3 8 4 9 6 1 5 2 12 11
1. Why was the earth different from the other planets?
Because water remained on the earth.
the water. 6. Plants began to grow
on dry land. 8. Water appeared on the
9. Shellfish and other earth.
fish appeared.
10. The universe began
11. Clever animals with with a "Big Bang".
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?