新版外研版英语八年级下册M3U2精品PPT课件.ppt（无音视频）

1、The earth is a _ and it _ the sun. Scientists think that there has been life on the earth for _ years. planetgoes aroundhundreds of millions of数亿的数亿的However, have we found life on any other planets yet?DiscussionHow many planets are there in the universe?2. Is there any life on other planets?solar s

2、ystemplanetsthe Sunthe EarthMars To know about the solar systemuniverse 宇宙宇宙planet 行星行星galaxy 星系星系Look at the pictures and think about the things you know about life on other planets.Look at the pictures and think about the things you know about life on other planets.solar system 太阳系太阳系star 恒星恒星moon

3、 月球月球 The sun and its planets are called _The earth is a _ and it goes around the sun. _ other planets go around the Sun.planet Seventhe solar system 太阳系太阳系the Galaxy / the Galaxy / the Milky Way the Milky Way 银河系银河系There are _ stars in the Milky Way.billions ofOur solar system is part of _.Scientis

4、ts have discovered many other_ in the universe. So it is _ to imagine how large the universe is.galaxiesgalaxiesimpossibleimpossibleScientists have sent spaceships to the planet Mars to take photos. They have even sent spaceships to travel outside the solar system. 1. nn 2. nvarnmnt 3. t 4. sl(r) 5.

5、 sstm 6. ru:p 7. lks 8. ju:nv:s 9. lat 10. mpsbl 11. at 12. kmju:nket noneenvironmentthatsolarsystemsolar systemgroupgalaxyuniverselightimpossibleoutcommunicate pron.没有一人没有一人n.环境环境pron.那，那个那，那个adj.太阳的太阳的n.系统，体系系统，体系星系，太阳系星系，太阳系n.群，组群，组n.星系星系n.宇宙宇宙n.光光/光线光线/光亮光亮 adj.不可能的不可能的adv.在远方在远方v.联系，交流联系，交流没有一人

6、没有一人环境环境那，那个那，那个太阳的太阳的系统，体系系统，体系太阳系太阳系群，组群，组星系星系宇宙宇宙光光/光线光线/光亮光亮 不可能的不可能的在远方在远方联系，交流联系，交流noneenvironmentthatsolarsystemsolar systemgroupgalaxyuniverselightimpossibleoutcommunicate Look at the picture and talk about what you know about Chinese spaceships.Shenzhou-9 is a manned spaceship.Scientists th

7、ink that there has been life on Earth for hundreds of millions of years. However, we havent found life on any other planets yet. find - found - found The Earth is a planet and it goes around the sun. Seven other planets also go around the Sun. None of them has an environment like that of the earth,

8、so scientists do not think they will find life on them. The Sun and its planets are called the solar system. And our solar system is a small part of a much larger group of stars and planets, called the galaxy or the Milky Way. There are billions of stars in the galaxy. And our sun is only one of the

9、m.But scientists have also discovered many other galaxies in the universe. They are very far away and their light has to travel for many years to reach us. So how large is the universe? It is impossible to imagine.Scientists have sent spaceships to the planet Mars to take phones. They have even sent

10、 spaceships to travel outside the solar system. However, no spaceship has travelled far enough to reach other stars in our galaxy. Scientists have always asked the questions: with so many stars in the universe, are we alone, or is there life out there in space? Have there been visitors to the earth

11、from other planets?Why has no one communicated with us? We dont know the answers municate with sb. 和某人联系和某人联系 1. Anyone out there?2. Life on Earth3. The sun and other stars4. The stars at nightRead the passage and choose the best title for it. planetsthe Sunthe EarthMars the solar system行星行星200 bill

12、ion starsIts a part of the universeuniverse(宇宙宇宙).Match the words with the picturesgalaxyplanetsolar systemstaruniverse太阳太阳Put the words and expressions from the smallest to the largest :A. galaxy B. planet C. solar system D. star E. universeBDCAE1. The Earth is a star.2. The Sun is a star. 3. There

13、 is more than one galaxy. 4. Our galaxy is part of the Milky Way.5. The light from stars has taken a long way to reach us. 6. Scientists have found life on other planets.7. They ve received many messages from space.8. They ve visited most of the universe.a planet.haventhavent haventDo you think they

14、re right or not?Our galaxy is called the Milky Way .信息信息大部分大部分Answer some questions about the passage:1.Have we found life on Mars?2.How many planets are there in the solar system?3.Which is larger, the galaxy or the universe?4.What have scientists done to look at other planets?5.Is there life out t

15、here in space?No, we havent.Eight.The universe.They have sent lots of spaceships.We dont know , we have never found any life on other planets .1 The Sun is a _ in the solar system . The Earth is a _and it goes around the Sun .2 Altogether there are _ planets around the Sun .3 There are billions of s

16、tars in the _.4 There are many other galaxies in the _.5 We have sent spaceship to the planet _ to take photos. but we havent discovered _on other planets. starplaneteightgalaxyuniverseMars lifeThe 1st Para. Questions:1.How long has there been life on the earth? 2.Have we found life on any other pla

17、nets yet?There has been life on the earth for hundreds of millions of years. No, we havent.1.What is called the solar system? What is it?2.How many planets are there in the solar system?3. Why dont scientists think theyll find life on the other planets? The sun and its planets are called the solar s

18、ystem.It is a small part of the Galaxy / the Milky Way.The 2nd Para. Questions:There are eight planets.Because none of them has an environment like that of the earth. What have scientists discovered? 2. Why is it impossible to imagine how large the universe is? Theyve discovered many other galaxies

19、in the universe. Because they are very _and their light _travel for many years to reach us.The 3rd Para. Questions:far awayhas to Scientists have _ spacships to the planet Mars to _. They have even sent spaceships to _ the solar system. However, no spaceship has travelled _ to reach other stars in o

20、ur Galaxy.The 4th Para.senttake photostravel outsidefar enoughSpaceships from the earth have done surveys of the other planets, but they have not found any life there. Why has no one from other planets tried to (4) _ with us? It is true that scientists have not discovered life on other planets in th

21、e (5)_ yet, but some scientists believe that they will find it some day.Complete the passage with the words and expression in the municate environment none solar system universe Is there life on other planets? There are seven other planets in our (1) _, but (2)_ of them has a(n) (3)_ like that of th

22、e earth. solar systemnoneenvironmentcommunicateuniverse 1.成百万年成百万年 2.在其它的行星上在其它的行星上 3.绕太阳转绕太阳转 4.他们中没有人他们中没有人 5.被叫做被叫做 6.太阳系太阳系 7.一小部分一小部分 8.几十亿的星星几十亿的星星 9.在宇宙中在宇宙中 10.许多其他的星系许多其他的星系11.距离好远距离好远 12.不得不，必须不得不，必须13.足够远足够远 14. 如此多如此多 15.和某人联系和某人联系 millions of years on any other planetsgo around the sunn

23、one of thembe calledthe solar systema small part ofbillions of starsin the universemany other galaxiesfar awayhave/has tofar enoughso manycommunicate with sb.1. Scientists think that there has been life on the earth for hundreds of millions of years. 科学家们认为地球上的生命科学家们认为地球上的生命已经有已经有上亿年上亿年的历史。的历史。Hundr

24、ed 前加前加基数词基数词，表示，表示“一百、二一百、二百、三百百、三百”，hundred要用要用单数形式单数形式；hundred与与of连用表示连用表示“数百数百”时，时，hundred 要用复数形式，即要用复数形式，即hundreds of。例如：例如：There are eight hundred students in our school.There are hundreds of people in the park.We planted _ trees last year. A. hundreds of B. hundred of C. five hundreds D. five

25、 hundred ofthousand, million, billion和和hundred的用的用法相同。法相同。Practise2. None of them has an environment like that of the earth, so scientists do not think they will find life on them.他们中没有一个有像地球这样的环境，因此科他们中没有一个有像地球这样的环境，因此科学家们认为在他们上面找不到生命。学家们认为在他们上面找不到生命。none of 表示（三个以上）一个也没有。表示（三个以上）一个也没有。做主语时做主语时，谓语动

26、词可用单数或复数谓语动词可用单数或复数。e.g.我们中没一个人去过火星。我们中没一个人去过火星。 None of us has/have been to Mars.注意：注意：none 与与no one（nobody） 的区别：的区别：none既可指人也可指物，既可指人也可指物，通常与表范围的通常与表范围的of 短语短语连用；连用；no one(=nobody)只能指人，只能指人，不能不能与与of 短语连用。短语连用。如：如：_ of the reasons was true. A. None B. No one C. All (2) none与与数量数量有关，有关，可回答可回答how man

27、y问句问句，表示，表示“一个一个也没有也没有”；而；而no one表示表示“什么人也没有什么人也没有”，可回答可回答who问句问句。如如： -Who are you speaking to?-_.-How many students are there in the room?-_.ANo oneNone选择适当的单词完成句子。选择适当的单词完成句子。 1. _ of us has been to Egypt.2. _ can do the difficult job.none; no oneNo oneNone that是指示代词。为避免重复，可用是指示代词。为避免重复，可用 that 或或

28、 those 来代替前面已提到过的人或事物；来代替前面已提到过的人或事物； The air in the countryside is fresher than _in the city. The streets in the city are wider and the buildings are taller than _ in the county.The environment is much cleaner than _ in the city. 1.The population of Shanghai is much larger than _ of Nanning.thattho

29、sethatthat3. However, no spaceship has traveled far enough to reach other stars in our Galaxy. 然而，没有一个航天器去到足然而，没有一个航天器去到足以到达我们银河系其他恒星那么远的地方。以到达我们银河系其他恒星那么远的地方。 enough to do adj./ adv. + enough + to do sth. 足够足够，可以，可以 not + adj./ adv. + enough + to do sth. 不够不够，不可以，不可以 (1) 我们有足够的钱花。我们有足够的钱花。 We have

30、_. (2) 他跑得够快，很快追上了我们。他跑得够快，很快追上了我们。 He ran _ catch up with us soon. (3) 他年龄不够大，照顾不了自己。他年龄不够大，照顾不了自己。 He _. enough money to spendfast enough toisnt old enough to look after himself4. With so many stars in the universe, are we alone, or is there life out there in space? 宇宙中有这么多星球，我们是孤独的吗？抑或宇宙中有这么多星球，我

31、们是孤独的吗？抑或太空中还有其他生命存在呢？太空中还有其他生命存在呢？With so many things to do, we have no time to play. 要做的事情这么多，我们都没时间玩了。要做的事情这么多，我们都没时间玩了。Ms Liang came into the classroom, with a smile on her face. 梁老师走进教室，脸上带着微笑。梁老师走进教室，脸上带着微笑。这里这里with so many stars in the universe是介词是介词短语，在句中短语，在句中作状语作状语，表示伴随。类似的例，表示伴随。类似的例子还有：子

32、还有：The woman stood there with her hands in the pockets.那个女士站在那里，手插在口袋里。那个女士站在那里，手插在口袋里。Practise Why do you always sleep _? Because Im afraid of the dark. A. by yourself B. with the door open C. with the window open D. with the light on With so many stars in the universe, are we alone, or is there li

33、fe out there in space? alone作形容词作形容词, 意为意为“孤单的孤单的, 独自的独自的”, 只能作表语。如：只能作表语。如： I was alone in the classroom. 我我独自独自在教室里。在教室里。 To tell you the truth, I dont feel like being alone tonight. 说实话说实话, 我今晚不想我今晚不想孤单孤单一人。一人。 alone还可作副词还可作副词, 意为意为“只有；仅仅；单只有；仅仅；单独地独地”。如：。如：She lives alone in that house. 她她独自一人独自

34、一人住在那栋房子里。住在那栋房子里。You cant live on bread alone. 你不能仅靠面包维生。你不能仅靠面包维生。 辨析辨析alone与与lonely的区别的区别 alone侧重于说明侧重于说明独自一人独自一人,没有人陪伴没有人陪伴, 不不强调主观感情；而强调主观感情；而lonely形容人时形容人时, 则表示情则表示情感上感上“孤独的；孤独的；寂寞的寂寞的”, 常作表语。如：常作表语。如：He was very lonely after his wife left. 他妻子离开后，他很孤独。他妻子离开后，他很孤独。She feels very lonely. 她感觉很孤独

35、。她感觉很孤独。Practice根据汉语提示完成单词。根据汉语提示完成单词。 Lindas parents are out. She has to stay at home _ (独自地独自地).2. The old man lives with his dog in the big house and he feels very _(寂寞的寂寞的).3. Dont leave the kids _ at home. Its always dangerous. alonelonelyalone注注: word : word 文档文档点击此处链接点击此处链接Quiz. 用方框中的单词的正确形式完

36、成下列用方框中的单词的正确形式完成下列句子。句子。 1. _ of the students has been to Australia. 2. A: How much is your new coat. B: It _ me 150 yuan. billion cost planet alone noneNone cost 3. A: Do you often go online, Zhao Hui? B: No. I like to go online when I am _ at home. 4. A: How many people are there in China now? B:

37、 It has reached 1.3 _. 5. The boy is only five years old, but he knows about many _.alonebillionplanets. 用用already, yet, just, ever或或never完成完成下列句子。下列句子。 1. I have _ done the heavy work and now I feel very tired. 2. Mary, have you read any books about Mars? No, I have _ read a word about it.justnever

38、 3. Have you _ been to the Great Wall in China, Vicky? Of course, I have. 4. Dont worry. We have _ helped you sweep the classroom. 5. Have you done your work _? Sorry, but I will finish it in one hour.everalreadyyet. 下列各句中均有一处错误，请指出并下列各句中均有一处错误，请指出并改正。改正。 1. My mother isnt in. She has been to the su

39、permarket. _ 2. Football is so exciting that million of people in the world play it. _ 3. That is very hard to reach the apples on the tree. _gonemillionsIt IV. 单词拼写。单词拼写。1. There is the earth, the sun, the moon and many other stars in the u_.2. There are eight planets in the solar s_.3. We should t

40、ry our best to protect the e_.4. A _(群，组群，组) of kids were playing with a ball in the street. Its too dangerous.5. The l_ in the room is poor. Dont read in it.6. I want to know how they _(交流交流) in the past.7. Its _(不可能的不可能的) for you to do it.8. The old man is a_. No one lives with him.9. I know _(没有一

41、个没有一个) of the students over there.10. I am interested in the books on space _(旅行旅行). niverseystem nvironment group ight communicated impossible lone none travel V. 完成句子。完成句子。1、今天比昨天暖和多了。、今天比昨天暖和多了。 Its _ _ today than yesterday.2、地球是一颗行星，它围绕着太阳转动。、地球是一颗行星，它围绕着太阳转动。 The earth is a planet and it _ _ th

42、e sun.3、不可能想象宇宙到底有多大。、不可能想象宇宙到底有多大。 _ _ _ _how large the universe is.4、科学家们已经在宇宙中发现了许多其他星系。、科学家们已经在宇宙中发现了许多其他星系。 Scientists _ _ many other _ in the universe.5、如果你有任何问题，你可以和你的老师交流一下。、如果你有任何问题，你可以和你的老师交流一下。 If you have _ _ , you can _ _your teacher. much warmergoes around Its impossible to imagine hav

43、e discovered galaxies any questions communicate withLook at the picture from a science story for children and answer the questions.What have the scientists just received?(a message from one of our spaceships)They have just received a message from one of our spaceships.1. Where has the spaceship land

44、ed? (Mars)It has landed on Mars. 2. What has the spaceship discovered? (people on Mars)3. Why have the people on Mars not sent us a message? (do not know how to)It has discovered people on Mars.They do not know how to send us a message.4. Why have the people on Mars not visited us on the earth? (do

45、not know how to)They do not know how to visit us on the earth. 生物生物UFOE.T.supermanDo you believe(相信相信) there are any living creatures in outer space?Do you hope there are any living creatures(生物生物) in outer space? Why?Weve just heard that our spaceship has landed on Mars, and weveAccording to the pi

46、cture, go on writingPossible version:Weve just received a message from our spaceship to Mars. Our spaceship has discovered aliens there. They have never sent us a message because they dont know how to communicate with us. They have not visited the earth because they dont know how to fly to our plane

47、t, and they prefer life on Mars. They seem very happy on their planet. They have used parts from the other spaceships from the earth to make TVs, radios and so on. We hope they will live happily with us one day!Ms Liang wish: I hope some of you will become scientists and send spaceship with astronau

48、ts to the space one day. So you should study hard now. And your dream will come true.the first astronaut in the worldYuri Gagarin 尤利尤利.加加林加加林The first person who landed on the moon Neil Arm Strong尼尔尼尔.阿姆斯壮阿姆斯壮The first woman astronaut 捷列什科娃捷列什科娃The first person who walked in space 列昂诺列昂诺夫夫The first women spacecraft driver柯斯林柯斯林结束语当你尽了自己的最大努力时，失败也是伟大的，所以不要放弃，坚持就是正确的。When You Do Your Best, Failure Is Great, So DonT Give Up, Stick To The End感谢聆听不足之处请大家批评指导Please Criticize And Guide The Shortcomings演讲人：XXXXXX 时 间：XX年XX月XX日