人教版高中英语必修三Unit 4《Astronomy the science of the stars》(period 1)课件
What subjects do you learn at school?
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.
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_
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_
The earth’s atmosphere
The earth’s atmosphere
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.
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
4 insects (on land)
5 amphibi4ans (on land a5nd in water)
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.
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
insects and amphibians appear
→ → rreettiilleessaappppeeaarr ddiinnoossaauurrss aappppeeaarr → mmaammmmaallss aappppeeaarr
Read paragraph 2 to 4 carefully and finish the following
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)
10. small clever animals with hands and feet
7. reptiles(on land) 8. dinosaurs(on land) 9. mammals(on land)
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.
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.!
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