人教高中英语必修3 Unit4 Astronomy: the science of the stars reading （共27张PPT）

(共27张PPT)
人教版/高一英语必修三/第四单元

Astronomy: the science of the stars
A puzzle
It looks like a ball but you can't play,
It is our home but so big,
It is round but we usually think it is flat.
It moves anytime but no one feels.
--The earth
What are the names of the eight
planets that circle the sun?


In Chinese culture…
____________ separated(分开) the sky
from the earth.
Pangu 盘古
sky
earth


Pre-reading

_____________ made human beings.





Nvwa (女娲)
Pre-reading

God
In western countries:
_______ created (创造) the world and all living things.
Pre-reading

Are these stories true?
legendary stories(传说故事)
Unit 4
Astronomy:
the science of the stars
Reading
Speaking and writing
The scientific idea about :

How life began on the earth?
Pre-reading
Para.1

Para.2

Para.3

Para.4

Para.5
B.A theory about how the universe was formed
C.The formation(形成） of the earth
A.The importance of water for life
E.The development of plants and animals
D.The arrival（出现）of humans and their
effects on the earth



Part1: The development of _______
Part2: The development of ____






Task1: Match each paragraph with its main idea.
the earth

life
Skimming
After the Big Bang, ______ began to form and combine(结合) to _______ stars and other bodies.
atoms
create
Para. 1
How did the universe come into being(形成)?
Skimming
a cloud of _____

Big Bang
a solid _______

slowly settled into


the earth ______ down
it exploded loudly with _____ and _____


water



the earth’s ___________
dust
globe
fire rock
atmosphere
cooled
How did the earth come into being(形成）?
Why was water fundamental(重要的) for the beginning of life?

Para. 3
It allowed the earth to ____________ harmful(有害的) gases and acids(酸) into the oceans and seas.
dissolve(溶解)
Which is the correct order of the

following animals' appearance on the

earth?______

1.shell fishes 2.mammals 3.reptiles

4.insects 5．dinosaurs
A.1,4,3,5,2
B．1,4,2,3,5
C.4,1,3,5,2 D．3,4,1,5,2
Para. 4


first, next, then ,after that, later, afterwards(后来)
________made it possible for life to begin to develop.
Water
Plants encouraged the development
of _____________________________.
early shellfish and all sorts of fish
Later _____________ appeared.
land animals
insects
amphibians

When plants grew into forests,
______ appeared for the first time.
reptiles
Some huge animals, called _________, developed.
dinosaurs
When dinosaurs disappeared, _________ became more important.
mammals

2
1 small plants in water
3 green plants on land
4
5
6 forests
7
8
9



2 shellfish and all sorts of fish
4 insects (on land)
5 amphibians
(on land and in water)
7 reptiles (on land)
8 dinosaurs (on land)
9 mammals (on land)


What problem is caused by human

beings?______

A.They exist everywhere on the earth.

B.They cause global warming.

C.They find new methods of growing crops.

D.They enjoy hunting and fishing.



B
Para. 5
1.They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.

2.The earth may become too hot to live on .


Step5:discussion
The earth is getting warmer each year.what effects will this have? How to solve this problem?
use solar energy
plant trees
recycle rubbish
prevent desertification
save water
purify air
What can we do take care of the earth?
We only have one earth.
Without other livings ,we human cannot live.
Homework
1. Read the passage more after class.
2. Write a composition about how to stop global warming.
Thank You