人教高中英语必修3 Unit4 Astronomy: the science of the stars Warmingup and Reading （共38张PPT）

(共38张PPT)
Unit 4 Astronomy: the science of
the stars


1. plants 2.Insects
3.Reptiles 4.shellfish
5.Fish 6. amphibians
7.Mammals 8. Human beings
课前自主回顾


八大行星
你知道吗？
Sun
Venus
Mercury
Mars
Jupiter
Saturn
Earth
Pluto
Neptune
Uranus
Do you know how our life began on the earth?
Do you know any ancient idea about the beginning of the earth?
Pangu separates the sky from the earth
Nvwa makes human beings
Religious
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 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(圣日).
How Life Began on the Earth
Skim the passage and match the main idea with each paragraph.
Para. 1 A.The formation(形成) of the earth.
Para. 2 B.The importance of water for life.
Para. 3 C.A widely accepted theory –the Big
Bang
Para. 4 D. The arrival of humans and their
impact(影响) on the earth.
Para. 5 E.The development of plants and animals on the earth.
The development of the earth
The Big Bang
(1) After the Big Bang, what happened?
a cloud of dust
a violent solid globe
exploded with fire and rock
produced carbon,
nitrogen ,water vapour& gases
Made the earth’s atmosphere
Water appeared
(2) What appeared on the earth then?
(3) What did the water form?
oceans and seas appeared
1. Big Bang
How did the earth come into being?
水
Water is
fundamental
to the development of life.
2.The development of life
small plants
First
early shellfish
Stage 1: The development of life in water
all sorts of fish
green plants on land
insects 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

The Big Bang
water
Small plants
insects and amphibians
land on
Reptiles on land
mammals
advanced mammals
dinosaurs



1. Small plants in water
2 ._______ and all sorts of fish
3. Green ____ on land
4. ____ (on land)
5. Amphibians (on land and in ____)
6. Plants grew into _______.
8. __________ (on land)
9. __________ (on land)
Have a try: Talking about the development of life
7. _____ (on land)
10. ____________ (small clever animals on land)
Shellfish
Insects
water
plants
forests
Reptiles
Dinosaurs
Mammals
Human beings
Please retell the passage according to the pictures.
Revision
Big Bang
A solid ball
The earth
Atmosphere
water
Plants in the water
Shellfish and fish
Plants on land
Insects and amphibians
Reptiles
Dinosaurs
Mammals
The end