Unit4-Astronomy-the-science-of-the-stars-reading.ppt

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1、Big BangA solid ballAtmosphere The earthIt was full of water.Original cells.The cells in the water began to separate.waterPlants in the waterShellfish and fishPlants on landInsects and amphibiansReptiles Dinosaurs Mammals Man had evolved from apes. Pangu separates the sky from the earth Other legend

2、s about the beginning of universe上帝创世说：What is the passage about?Reading Its about the development of the earth.What was there on the earth before life could begin?2. Why do scientists think there has never been life on the moon?3. Why did animals first appear in the seas?4. Why did green plants hel

3、p life to develop?5. Why were mammals different from other animals?Fast readingCareful reading1. How did water come into being on the earth?2. Whats the significance of the presence of water on the earth?The explosion of the earth produced water vapor, which turned into water when the earth cooled d

4、own.It allowed the earth to dissolve harmful gases into oceans and seas. Read paragraph 2 to 4 carefully and finish the following form.How life began on the earth1. small plants in water2. 3. green plants on land4. insects(on land)5. 6. forests7. reptiles(on land) 8. 9. 10. small clever animals with

5、 hands and feet 11. shellfish and all sorts of fishamphibians (on land and in water)dinosaurs(on land)mammals(on land)human1 Why is it wrong in films and stories to show dinosaurs and people together?2 Why do you think that humans are the cleverest animals on the earth?Because dinosaurs died out lon

6、g before human beings developed on the earth.We are the cleverest animals because we have large brains than any other creatures on the earth so far.Group workIs the earth getting warmer each year? If so, what effects will this have? Whats the “green house effect,” which some scientists say might des

7、troy our planet? Will the burning of coal, oil, and natural gas cause the earth to become a dead planet like Venus? 1.last 1) adj. last summer/last Monday 2) adv. When did you last get a letter from your mother?3) vi. How long will the fine weather last? 4) n. These are the last of our books./ at la

8、st (the last of 最后的人或事物)2. explode (v.) explode the bombexplode with/in anger explode into/with laughter3.in time If you keep on studying hard, youll succeed in time.(迟早) She will be back in time to prepare dinner. (及时) in time (for sth/ to do sth)The audience clapped in time to the music. (in/out o

9、f time 合/不合节拍)4.cool 1) v. Please open the window to cool the room. Dont drink the tea before it cools a little. If your both sides dont cool down first, we cant settle the heated argument better. (cool down) Try to cool her down. (cool down)2) adj. be/get/seem/keep cool His songs received a cool re

10、sponse from the public.5. Sb+vt+it+adj/n+(for sb/sth) to do sththat-clausemake,think,consider,feel,find I find it difficult (for me) to talk to you about anything serious. He made it clear that he disagreed. That made it possible for life to begin to develop.6.grow 1) v. They sent men out to learn h

11、ow to grow rice. The smoke grew heavy.(=become)His trouble grew out of his bad temper. (grow out of由而生) 短语：grow up, grow intoadjgrowinggrownngrowth grower grown-up7.spread(spread,spread) 1) vt. 常与out连用 She spread out her arms to welcome us. 2) vi. The rumour spread through the school very quickly. (

12、=get round/about) 现实的人8.exist (vi.) There existed a temple there in the past. existence (n)9.escape 1) v. escape sthdoing sthescape punishment=escape being punished escape from sth/some place2) n. Escape from the prison is difficult.a fire-escape(太平门梯) an escape-pipe(排气水管)3) escapee逃亡者) escapism逃避主义

13、) escapist)逃脱现实的人10. depend on/upon 1) 信赖，依靠 depend on/uponsb/sth/v-ingsb/sth forsb to do sthYou mustnt depend on others to help you.All living things depend on the sun for their growth. 2) 视而定，取决于 The price depend on the quality. Your success depends on whether you work hard. That depends on how you did it.4) depend on it（常用在句首或句末口语中，表“请放心，没问题“）Depend on it, I wont let you down.Can I depend on it that this wont take place again?5) dependable (adj) dependence (n)3) It/That (all) depends那得看情况而定（口语）I will meet him, but that/it depends.结束结束