高中英语Unit4 Astronomy the science of the starsreading课件 新课标 人教 必修3

1、2021/8/11 星期三1Astronomy:2021/8/11 星期三2Where do we come from? Or we can say: Who are our ancestors? Pre-reading2021/8/11 星期三3Big BangA solid ballAtmosphere The earth2021/8/11 星期三4It was full of water.2021/8/11 星期三5Original cells.2021/8/11 星期三6The cells in the water began to separate.2021/8/11 星期三7wat

2、erPlants in the waterShellfish and fishPlants on land2021/8/11 星期三8Insects and amphibiansReptiles Dinosaurs Mammals 2021/8/11 星期三9Man had evolved from apes. 2021/8/11 星期三10 Do you know each religion or culture has its own ideas about the beginning of the universe?2021/8/11 星期三11Pangu separates the s

3、ky from the earth 2021/8/11 星期三12Other legends about the beginning of universe2021/8/11 星期三13Day 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 上帝创世说：2021/8/11 星期三14Day 4: God

4、 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 2021/8/11 星期三15India Brahma(婆罗门) is the god first represented in the Hindu Triad. H

5、e is the creator of the universe and all living beings are said to have evolved from him.2021/8/11 星期三16What is the passage about?Reading Its about the development of the earth.2021/8/11 星期三17What was there on the earth before life could begin?2. Why do scientists think there has never been life on

6、the moon?3. Why did animals first appear in the seas?4. Why did green plants help life to develop?5. Why were mammals different from other animals?Fast reading2021/8/11 星期三181. What was there on the earth before life could begin? Water vapour, carbon dioxide, oxygen, nitrogen and other gases.2021/8/

7、11 星期三192. Why do scientists think there has never been life on the moon? Because there is no water on the moon.3. Why did animals first appear in the seas? Because water allowed the earth to dissolve harmful gases into the oceans and seas. 2021/8/11 星期三204. Why did green plants help life to develop

8、? Because green plants can take carbon dioxide from the atmosphere and fill the air with oxygen.2021/8/11 星期三215. Why were mammals different from other animals? They were different because they produced their young from within their bodies.2021/8/11 星期三22Careful reading1. How did water come into bei

9、ng 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 down.It allowed the earth to dissolve harmful gases into oceans and seas. 2021/8/11 星期三231 why was the earth different from o

10、ther planets?A It produced a lot of heat B The water remained C Water disappearedD It was the oldest planet2 Why was life able to develop on the earth but not on other planets?A The earth had a solid shape B The earth did not have harmful gases in its atmosphereC The water stayed on the earth but no

11、t on other planetsD The earth was not too hot but not too coldChoose the best answerBC2021/8/11 星期三243 Why was it necessary for plants to grow before animals?A Animals needed plants to protect them from the sun B Plants provided oxygen for animals to breatheC Animals could hide from hunters in fores

12、ts.D It was easier for plants to grow.4 What problem is caused by human being?A They exist everywhere on the earthB They cause global warming C They find new methods of growing cropsD They enjoy hunting and fishing BB2021/8/11 星期三25Read paragraph 2 to 4 carefully and finish the following form.How li

13、fe 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 hands and feet 11. shellfish and all sorts of fishamphibians (on land and in water)dinosaurs(on land)mammals(on land)human2021/8/11 星期三26Dis

14、cussion1 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 long before human beings developed on the earth.We are the cleverest animals because we have large brains than any othe

15、r creatures on the earth so far.2021/8/11 星期三27Group workIs the earth getting warmer each year? If so, what effects will this have? Whats the “green house effect,” which some scientists say might destroy our planet? Will the burning of coal, oil, and natural gas cause the earth to become a dead plan

16、et like Venus?2021/8/11 星期三28 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 last (the last of 最后的人或事物)Language points2021/8/11 星期三292. explode (v.) explode the bomb

17、explode 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 of time 合/不合节拍)2021/8/11 星期三304.cool 1) v. Please open th

18、e 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 response from the public.2021/8/11 星期三315.

19、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.2021/8/11 星期三326.grow 1) v. They sent men out to learn how to grow

20、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-up2021/8/11 星期三337.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. (=get round/about) 现实的人8.exist (vi.) There existed a temple there in the past. existence (n)2021/8/11 星期三349.escape 1) v. escape sthdoing sthescape punishment=escape being punished escape from sth/some place2) n. Escape from the pri