人教高中英语必修3 Unit 4 Astronomy: the science of the stars Reading (共27张PPT)

(共27张PPT)
Module3 Unit4 Astronomy-Reading
How Life Began on the Earth





Where do we (people) come from?


Pangu separated the sky from the earth.




The Goddess Nvwa created human
beings with yellow mud (泥土)




According to Bible (圣经), God created the first man, Adam (亚当) and the first woman, Eve (夏娃).

1.How does the author develop the passage?
task 1 listening
Give examples（举例）
In time order（以时间顺序）
C. Comparison（比较）
Task 2 skimming
Skim the passage quickly and match the main idea with each paragraph.
Para.1
Para.2
Para.3
Para.4
Para.5
A. The formation(形成) of the earth.
B. The importance of water for life.
C.A widely accepted theory(理论) about the formation of the universe
D. The arrival of humans and their impact on the earth.
E. The development of plants and animals on the earth.






This text can be mainly divided into two parts：



Part 1 : The development of the earth


Part 2 : The development of life


(para 1—3)
(para 4—5)
Task 3. scanning

1.The universe began with a “_________” that threw matter(物质) in all directions. Then _____ began to form and combine to create _____.
Part 1: The development of the earth(para 1-3)
Big Bang


atoms

stars
The Big Bang


2.The earth was still a cloud of ______.

3.Between 4.5 and 3.8 billion years ago, the dust settled into a _________.
dust
solid globe


4.The earth exploded(爆炸) with _____ and _____, producing ______________, ________, water vapour and other gases. These made the earth’s________ .As the earth cooled down, _______appeared.

fire
rock
carbon dioxide
nitrogen 氮
Atmosphere 大气层

atmosphere
water
The first small plants appeared on the surface of _____. They multiplied and filled the seas with ________, which encouraged the later development of early _________and all sorts of fish.

Part 2( para.4-5 ) The development of life
1. What kind of life appeared in water ?

water
oxygen
shellfish
1.green plants appeared on land


2. What kind of life appeared on land ?
2.Land animals including insects and amphibians appeared.

3.forests
What appeared next on land?
4. reptiles on land

dinosaurs on land


mammals on land






small clever animals
What was there after mammals?
Can you fill in the blanks?

2


3

4
5
6

7
8
9
10

1 small plants in water
sellfish and all
sorts of fish
insects
reptiles

amphibians
mammals
dinosaurs
humans
plants

animals
Green plants on land
forests
Summary

During the development of life,
there is a clear order. Do you know in what order life developed?
From water to land
From plants to animals
From low to high

？

Why did the plants grow before the animals came?
Because plants provide oxygen and food for animals to breathe and eat.

？
How life began on the earth
“Big Bang”
other bodies
________
stars


Earth: a cloud of _____


atoms
dust

Task 4 Summary

a solid _____
the earth’s _____________
other 4.
_____
______: fundamental to the development of life





water vapour
nitrogen
carbon
dioxide




extremely small _______ on the
surface of the water


globe
gases
atmosphere
Water
plants
early _________ and all sorts of fish

green plants on land

land animals
insects
amphibians



___________

huge animals
(dinosaurs)

the rise of __________

human beings
shellfish
reptiles
mammals
We have only one earth ! Let’s take an active part to create a better future for the earth and the mankind !

Homework
What can we do to protect our earth from becoming hotter and hotter?


First, we should ...
Second, it’s of great use for us to ...
Third, the government should take some measures to…
All in all, …



1.Save energy

1.Stop burning fossil fuels

2. choose renewable energy
3.Buy energy efficient appliances
4. Save water
5.Choose an efficient vehicle and drive less
2.Plant more trees and recycle
3. stop factory emissions(废气排放).
4. live a low carbon life (低碳生活).