人教版高中英语 book3-unit4 reading (共27张PPT).

Read para.2-3 carefully and answer the following questions:
What happened after the “Big Bang”?
After the “Big Bang”, for several billions years the earth was a cloud of dust. Between 4.5 and 3.8 billion years ago the dust settled into a solid globe. What happened after the earth became a solid globe?
6 9. Shellfish and other fish
earth
appeared.
1 10. The universe began
12 11. Clever animals with
with a “Big Band”.
hands and feet appeared
11 12. Mammals appeared.
Ex.2 on P27
Fill the blanks according to the whole passage.
Post -reading
After the “Big Bang”, the earth was just a cloud of _d_u_s_t. It e_x_p_lo__d_e_d__loudly producing gases and then make the earth’s atmosphere. After the earth cooled down, w__a_te_r_ appeared.
• How life began on the earth
Skimming:
Read fast and try to match the main idea
Paragraph 1:
a. The importance of water for life
Paragraph 2: Paragraph 3: Paragraph 4:
Analyze the following sentences:
• However, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions.
Paragraph 5:
b. The development of plants and animals on the earth
c. The formation of the earth
d. A widely accepted theory about the formation of the universe
a cloud of dust 4.5 and 3.8 billion years/a solid globe violent/explod/The explosion
How did water come into being on the earth?
water began to appear when the earth cooled down.
5 4.Small plants grew on the water.
9 5. Reptiles appeared.
7 6. Plants began to grow
2 7. The earth was a cloud
on dry land.
of dust
4 8. Water appeared on the
greenhouse effect and global warming
ice in the North Pole melts
sand storm
WOnhleythiferwelicfearweiwll iclol nwteinhueelpo,n the eoanrltyhifdwepeehnedlsposnhahlul malal nbebseainvgesd.!
e. The arrival of humans and their impact on the earth
Careful reading:
Read para.1 loudly and then try to answer the questions.
Why does no one know how the earth begin?
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)
It allowed the earth to dissolve harmful gases into oceans and seas/was fundamental to the development of life.
cool downon /appear the other planets/disappear dissolve .... into....
__d_i_n_o_s_a_u_r_s developed. When they disappeared, m__a_m__m_a_l_s_
became more important.
__S_m_a_l_l_c_le_v_e_r_a_n_i_m_a_l_s_,with hands and feet, then appeared and spread all over the earth.
Unit 4 Astronomy: the science of the stars
Astronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it.
Read paragraph 4 carefully and finish the following form.
1. small plants in water
3. green plants on land
6. forests 10. small clever animals
with hands and feet
What was the widely accedpted theory?
a Big Bang /matter/atoms
Read para.2-3 carefully and answer the following questions:
What happened after the “Big Bang”?
• What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.
• The earth became so violent that it was not clear whether the shape would last or not.
astronomer
THE SOLAR SYSTEM
Venus金星
Mercury 水星 Jupiter 木星
Earth 地球
Saturn 土星
Mars 火星
Uranus 天王星
Neptune海王星
Scientists now thincalled a planet.
The earth is the only globe that exists life, do you think so?
The origin of life on earth is a question that interests astronomers. Each religion and culture has its own ideas about life began on earth.
Pangu separated the sky from the earth
Nvwa made human beings
God created the world in seven days
how life began on the earth from a scientific view.
Unit 4 Reading
Can you put the order of development
of life into a time line?
8 1. Insects and
10 2. Dinosaurs appeared.
amphibians appeared.
3 3. The earth became a solid ball.
What happened after the earth became a solid globe?
How did the earth’s atmosphere come into being on the earth? How did water come into being on the earth? Had water appeared on the other planets? Then what happened? Why is it important to have water on the earth?