(共29张PPT)
Unit 4
Welcome to our class
In our solar system eight planets
circle around the sun.
1111
Pangu separates the sky from the earth.
Nvwa makes human beings.
上帝造人
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 two 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.
Unit 4
How Life Began on the Earth
While-reading
Task 1 Listen and match
Listen to the tape of the reading passage and match the main idea for each paragraph.
Main idea of each paragraph
The importance of water for life
The development of plants and animals on the earth
The formation of the earth
d. 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:
Paragraph 1:
Paragraph 2:
Paragraph 3:
Paragraph 4:
e
We can divide the text into three parts
Part one(para1): A widely accepted theory
(Introduction)
Part two(paras2.3.4): The development of living things
(Main Body)
Part three(para5): The arrival of humans and
their impact on the earth (Conclusion)
1.How were stars and other bodies created
Atoms combined to create them.
Clouds of dust combined to create them.
Water combined to create them.
Gases combined to create them.
2.What is the widely accepted theory
The universe began with a “Big Bang” that threw matter in all directions.
A
While-reading
Task 2: Scanning
Work in pairs. Put the order of development
of life into a timeline according to the
reading passage.
Put the order of development of life into a time line.
Insects and amphibians appeared.
The earth became a solid ball.
Reptiles appeared.
The earth was a cloud of dust.
Shellfish and other fish appeared
Dinosaurs appeared.
Small plants grew on the water.
Plants began to grow on dry land.
Water appeared on the earth.
Mammals (including humans )appeared.
D
B
I
G
E
H
A
C
F
J
Step 6 Looking and thinking
Look at the following pictures and try to understand more of the reading passage.
A cloud of dust
A solid globe
Explode
atmosphere
water
________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
came into being and spread all over the world.
What life developed after mammals
Humans
.
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.
ks5u精品课件
As a student, what little things can we do for the earth
Discussion
to prevent the earth from getting hotter and hotter
to slow down the problem getting worse
……
solar energy
plant trees
recycle rubbish
prevent desertification
Save water
purify air
We have only one earth!
We should take care of the earth!
ks5u精品课件
Whether life will continue on the earth depends on human beings.
Only if we care will we help,
only if we help shall all be saved!
Step 8 Homework
1.Read aloud the reading passage and underline the useful phrases and sentence patterns.
2.Finish off Ex1and Ex2 on P. 28.Unit 4 Astronomy：the science of the stars
Step one :warming up
1.What is astronomy
Astronomy is the scientific study of the stars and planets.
2.In our solar system eight planets circle around the sun. What are they
________(水星)---________(金星)---Earth---_______(火星)===________(木星)---________(土星)---_________(天王星)---_________(海王星)
Step two :reading
1.Match the main idea for each paragraph .
Paragraph 1: a. The importance of water for life
Paragraph 2: b. The development of plants and animals on
the earth.
Paragraph 3: c. The formation of the earth
Paragraph 4: d. A widely accepted theory about
the formation of the universe
Paragraph 5: e. The arrival of humans and
their impact on the earth
2.We can divide the text into three parts.
Part one(para1):
Part two(paras2.3.4):
Part three(para5):
3.Read Part one and think about the questions.
1.How were stars and other bodies created
A. Atoms combined to create them.
B. Clouds of dust combined to create them.
C. Water combined to create them.
D. Gases combined to create them.
2.What is the widely accepted theory
4.Read Part two aloud and put the order of development of life into a timeline.
Put the order of development of life into a time line.
A. Insects and amphibians appeared.
B. The earth became a solid ball.
C. Reptiles appeared.
D. The earth was a cloud of dust.
E. Shellfish and other fish appeared
F. Dinosaurs appeared.
G. Small plants grew on the water.
H. Plants began to grow on dry land.
I. Water appeared on the earth.
J. Mammals (including humans )appeared.
5.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.
Step three: Discussion
What can we do to prevent the earth from getting hotter and hotter and to slow down the problem getting worse
solar energy prevent desertification plant trees
Save water recycle rubbish purify air
A: Do you think there's anything we can do to protect the earth
B: There are lots of things we can do to prevent more damages from happening.
A: Like what
B: Well, we can use public transport instead of taking our cars for a start.
A: What else can we do to protect the environment.
... ...
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