资料简介
Reading
HOW LIFE BEGAN ON THE EARTH
A Quiz Game
1. How old is the earth?
A. About 3.5 billion years
B. About 4.5 billion years
C. About 5.5 billion years
D. About 6.5 billion years
2. ______ of the earth surface is covered
by water.
A. 20% B. 30% C. 50% D. 70%
3. How many planets are there in the Solar
System?
A. 6 B. 7 C. 8 D. 9
4. What is the total population of humans
on the earth?
A. About 3.5 billion B. About 4.5 billion
C. About 5.5 billion D. About 6.5 billion
5. How long does the rotation (自转) of the
earth take?
A. 12 hours B. 24 hours C. a month
D. 365 days
6. Which continent is the smallest?
A. Africa B. North America
C. South America D. Oceania
7. On what day is the Earth day celebrated?
A. April 22 B. May 4
C. August 21 D. November 11
8. Which ocean is the largest?
A. The Pacific Ocean
B. The Arctic Ocean
C. The Indian Ocean
D. The Atlantic Ocean
9. Which country has the largest area?
A. Canada B. China
C. Russia D. U.S.A
1.What’s the meaning of the word
“Astronomy”?
I. Warming up
the science of stars;
the scientific study of stars and planets.
2. What words will you think of when we
talk about this topic?
star, planet, the sun / moon / earth, solar system
恒星 行星 太阳 月球 地球 太阳系
3. How many planets are in the solar
system?
The Solar System
1111
5. The names of eight planets.
• Mercury
• Venus
• Earth
• Mars
• Jupiter
• Saturn
• Uranus
• Neptune
1) 水星
2) 金星
3) 地球
4) 火星
5) 木星
6) 土星
7) 天王星
8) 海王星
商业之神”和“旅行之
神”爱与美之神
该亚
战神
天神
农业之神
宇宙之神
海神
Mercur
y
Venus
Earth
Mars
Jupiter
Uranus
Saturn
Neptune
6. Put them in correct order on P25.
Do you know their origin?
II. Pre-reading
1.Have you ever asked your mother, “Mom,
where do I come from”?
2. Nearly everybody has this or that puzzles:
How do human beings come into being?
How does the earth come into being?
3. In China, there are two legends about these
puzzles. Do you know the names?
盘古开天辟地 女娲补天造人
4. In the western culture, who creates
everything in the world?
Each religion and culture has its own
ideas about how life began on earth.
What do you know?
In China, we all know that Pangu
separates the sky from the earth
and Nvwa made humans.
Other legends about the beginning of
universe.
The Biblical Account
Day 1: God spoke and separated light from darkness
creating Day and Night.
Day 2: God spoke and separated the water creating
sky and ocean.
Day 3: God spoke and created dry land.
Day 4: God spoke and created the sun, moon and
stars.
Day 5: God spoke and created living creatures in the
air and sea.
Day 6: God spoke and created the land animals and
man.
Day 7: God rested and blessed this day calling it Holy.
India
Brahma(梵天、四面
佛) is the god first
represented in the
Hindu Triad（初禅）.
He is the creator of the
universe and all living
beings are said to have
evolved from him.
How life began on
the earth in
science field
III. Fast-reading
1.Do you believe in such stories? Are they based
on science?
2. In this unit, we’ll learn something more
scientific.
3. What’s the title of the text?
4. From the title, we can predict that the text
may tell us the origin of life on the earth.
skimming
How does the author develop the passage?
A. Give examples（举例）
B. In time order（以时间顺序）
C. Comparison（比较）
What’s the writing style of the text?
A. Narrative 记叙文 B. Explanation 说明文
C. Essay 散文
Para. 1 The formation (形成) of the
earth.
Para. 2 The importance of water for
life.
Para. 3 A widely accepted theory
about the formation of the
universe.
Para. 4 The arrival of humans and
their impact on the earth.
Para. 5 The development of plants
and animals on the earth.
Second reading
How life began on the earth
“Big Bang”
other bodies________ stars
Earth: a cloud of _____
atoms
dust
Summary
a solid _____
the earth’s _____________
other 4.
_____
Water: ____________ to the development of life
water vapour nitrogen carbon
extremely small _______ on the
surface of the water
globe
gases
atmosphere
fundamental
plants
early _________ and all sorts of fish
green plants on land
land animals insectsamphibians
___________
huge animals
(dinosaurs) the rise of __________
human
beings
shellfish
reptiles
mammals
T/ F
1. The earth appeared before the Big Bang happened.
2. The original atmosphere consisted of nitrogen and oxygen.
3. The main difference between the earth and other planets is that
there is water on the earth.
4. Life began in water and then on land.
5. Mammals appeared before the development of dinosaurs.
6. Dinosaurs could give birth to young baby animals and produced
milk to feed them.
7. Human beings produce too much carbon dioxide which causes
the global warming on the earth.
8. According to the text, human beings would disappear in the end.
F
F
T
T
scanning
F
F
T
F
Answer the following questions.
1. Why was the earth different from other planets?
The water remained.
2. Why did the plants grow before the animals came?
Because plants provide oxygen for animals to
breathe.
3. Why is it wrong in films and stories to show
dinosaurs and people together?
Because dinosaurs died out long before human
beings developed on the earth.
Comprehending
4. There used to be nine planets in the solar system.
Recently scientists have decided that one of them
can no longer be considered a planet. Do you
know the name of that planet? Do you know why
they removed it?
Pluto. Scientists now think it is too small to be
called a planet.
5. What problem is caused by human beings?
They cause global warming.
• （ ）1 Insects and amphibians appeared.
• （ ）2 Dinosaurs appeared.
• （ ）3 The earth became a solid ball.
• （ ）4 Small plants grew on the water.
• （ ）5 Reptiles appeared.
• （ ）6 Plants began to grow on dry land.
• （ ）7 The earth was a cloud of dust.
• （ ）8 Water appeared on the earth.
• （ ）9 Shellfish and other fish appeared.
• （ ）10 The universe began with a “Big Bang”.
• （ ）11 Clever animals with hands and feet appeared.
• （ ）12 Mammals apeared.
5
10
6
2
9
4
8
3
7
1
Put the order of development of life into a time line.
12
11
Summary
Greenhouse effect
The earth is our only one home.Are we
taking good care of the earth? What
problems are humans causing ?
putting too
much carbon
dioxide into
the air
the earth
may
become
too hot
No life
will be
on the
earth
As a student, what
can we do for the
earth?
solar energy plant trees
recycle rubbish
prevent
desertification
save water purify air
We have only one earth!
We should take care of the earth!
Only if we care shall we help！
Only if we help will all be saved!
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