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

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

2、s in the waterShellfish and fishPlants on land2021/8/11 星期三7Insects and amphibiansReptiles Dinosaurs Mammals 2021/8/11 星期三8Man had evolved from apes.2021/8/11 星期三9 Do you know each religion or culture has its own ideas about the beginning of the universe?2021/8/11 星期三10Pangu separates the sky from t

3、he earth 2021/8/11 星期三11Other legends about the beginning of universe2021/8/11 星期三12Day 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 星期三13Day 4:God spoke and cr

4、eated 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 星期三14IndiaIndia Brahma(Brahma(婆罗门婆罗门婆罗门婆罗门)is)is the god first the god first represented i

5、n the represented in the Hindu Triad.He is Hindu Triad.He is the creator of the the creator of the universe and all universe and all living beings are living beings are said to have evolved said to have evolved from him.from him.2021/8/11 星期三15What is the passage about?Reading Its about the developm

6、ent of the earth.2021/8/11 星期三161.What was there on the earth before life could begin?2.2.Why do scientists think there has never been life on the moon?3.3.Why did animals first appear in the seas?4.4.Why did green plants help life to develop?5.5.Why were mammals different from other animals?Fast re

7、ading2021/8/11 星期三171.What was there on the earth before life could begin?Water vapour,carbon dioxide,oxygen,nitrogen and other gases.2021/8/11 星期三182.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?Becaus

8、e water allowed the earth to dissolve harmful gases into the oceans and seas.2021/8/11 星期三194.Why did green plants help life to develop?Because green plants can take carbon dioxide from the atmosphere and fill the air with oxygen.2021/8/11 星期三205.Why were mammals different from other animals?They we

9、re different because they produced their young from within their bodies.2021/8/11 星期三21Careful 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 coo

10、led down.It allowed the earth to dissolve harmful gases into oceans and seas.2021/8/11 星期三221 why was the earth different from other planets?1 why was the earth different from other planets?A It produced a lot of heat A It produced a lot of heat B The water remained B The water remained C Water disa

11、ppearedC Water disappearedD It was the oldest planetD It was the oldest planet2 Why was life able to develop on the earth 2 Why was life able to develop on the earth but not on other planets?but not on other planets?A The earth had a solid shape A The earth had a solid shape B The earth did not have

12、 harmful gases in its atmosphereB The earth did not have harmful gases in its atmosphereC The water stayed on the earth but not on other planetsC The water stayed on the earth but not on other planetsD The earth was not too hot but not too coldD The earth was not too hot but not too coldChoose the b

13、est answerBC2021/8/11 星期三233 Why was it necessary for plants to grow before animals?3 Why was it necessary for plants to grow before animals?A Animals needed plants to protect them from the sun A Animals needed plants to protect them from the sun B Plants provided oxygen for animals to breatheB Plan

14、ts provided oxygen for animals to breatheC Animals could hide from hunters in forests.C Animals could hide from hunters in forests.D It was easier for plants to grow.D It was easier for plants to grow.4 What problem is caused by human being?4 What problem is caused by human being?A They exist everyw

15、here on the earthA They exist everywhere on the earthB They cause global warming B They cause global warming C They find new methods of growing cropsC They find new methods of growing cropsD They enjoy hunting and fishing D They enjoy hunting and fishing BB2021/8/11 星期三24Read paragraph 2 to 4 carefu

16、lly 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 hands and feet 11.shellfish and all sorts of fishamphibians(on land and in water)dinosaurs(on land)mammals(on l

17、and)human2021/8/11 星期三25Discussion1 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

18、 large brains than any other creatures on the earth so far.2021/8/11 星期三26Group 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

19、 become a dead planet like Venus?2021/8/11 星期三27 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 星期三282.explode(v.)explode th

20、e 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 of time 合/不合节拍)2021/8/11 星期三294.cool 1)v.Please open the w

21、indow 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 星期三305.Sb+vt+it+adj

22、/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 星期三316.grow 1)v.They sent men out to learn how to grow rice.The smoke grew

23、 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 星期三327.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.exi

24、st(vi.)There existed a temple there in the past.existence(n)2021/8/11 星期三339.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)escapist)逃脱现实的人2021/8/

25、11 星期三3410.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.2021/8/11 星期三354)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.2021/8/11 星期三36Thank you2021/8/11 星期三372021/8/11 星期三38