人教版高中英语必修三Unit 4《Astronomy the science of the stars》(period 1)课件

发布时间:2021-11-29 04:29:10

Warming up&reading

Warming Up

brainstorming

What subjects do you learn at school?

?Chinese ?English

?geography
geophysics
?physics

?mathematics

?biology

biochemistry

?physics

?chemistry

?history

astronomy biochemistry geophysics medicine
_m__e_d_ic_i_n_e__ the scientific study of treatment of diseases and injures
b__io_c_h_e_m__is_t_rythe study of the chemistry of living things
_g_e_o_p_h_y_s_ic_s the scientific study of the earth’s atmosphere, oceans and climate
_a_s_t_ro_n__o_m_y_ the scientific study of objects in space, such as planets, stars, comets and “black holes”

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.
astronomer

The Solar system
? eight planets ? many comets ? other objects

A. 地球 _E__a_r_t_h B. 木星 _J_u__p_it_er
C. 火星 _M__a_r_s_
D. 水星
M__e_r_c_u_r_y_
E. 海王星
N_e_p_t_u__n_e

F. 冥王星 _P__lu__to__ G. 土星 _S_a__tu__r_n_ H. 天王星 _U__r_a_n_u_s I. 金星 __V_e_n__u_s_

Thseuerafrathc’es atmosphenreitrogen

vapour

The earth’s atmosphere

oxygen

carbon

dioxide

The earth’s atmosphere
Presentation

HOW LIFE BEGAN ON THE EARTH?

Pangu separates the sky from the earth

Nuwa makes human beings

The Big Bang

How many parts can the text be divided into?
Two parts: Part 1 (para 1)
Water made it possible for life begin to develop.
Part 2 (para2.3.4)
The development of living things.

Energetic dust
A solid ball Explode atmosphere water

Water made it possible _fo_r__li_f_e_t_o_b_e_g_i_n_t_o_d__ev_e_l_o_p_._

1 small plants in water 3 green plants on land

2alsl shoerlltfsi2sohf

and fish

4 insects (on land)
5 amphibi4ans (on land a5nd in water)

6 forests

7 reptiles7(on land) 8 dinosau8rs (on land)
9 mamma9ls (on land)

_W__a_t_e__r_made it possible for life to begin to develop.

Later _l_a_n_d__a_n_i_m_a__ls_
appeared.

insects amphibians

When plants grew into forests, r_e_p_t_il_e_s appeared for the first time.

Some huge animals, called _d_i_n_o_s_a_u_r_s , developed.

When dinosaurs disappeared, _m__a_m_m__a_l_s became more important.

The development of life
→ → A cloud of dust a solid ball

→ presence of water

small plants grow

→ on the water sshheellflifsishh&&ootthheerrfifsishh

→ appear plpalnatnstsbebgeignintotogrgorwowonondrdyry

→ llaanndd

insects and amphibians appear

→ → rreettiilleessaappppeeaarr ddiinnoossaauurrss aappppeeaarr → mmaammmmaallss aappppeeaarr

Exercises

Read paragraph 2 to 4 carefully and finish the following

form.

How life began on the earth

1. small plants in water

2. shellfish and all sorts of fish

3. green plants on land

4. insects(on land) 5. amphibians (on land and in water)

6. forests
10. small clever animals with hands and feet

7. reptiles(on land) 8. dinosaurs(on land) 9. mammals(on land)
11. human

Check the answers on P27 2. 10 7 3 8 4 9 6
1 5 2 12 11
3. 1. Because the water reminded on the earth.
2. Because plants provide oxygen for animals to breathe.
3. Because dinosaurs died out long before human beings developed on the earth.
4. The name is Pluto. Scientists now think it is too small to be called a planet.
5. Human beings caused global warming.

Group work
What problems have been caused by humans to the earth? How to protect the earth and make it a better place to live on?

As a student, what little things can we do for the earth?

WOnhleythifewr elicfaerweiwllicllownteinhueelpo,n the eoanrlythifdwepeehnedlsposnhahlul mallabnebseainvegds.!

Conclusion
Homework
1.听写astronomy-----dioxide 2. 书上P28 第4题 1. solid; violent; astronomy; generally
speaking; prevent…from; planet; development;
explode; surface, method


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