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1、一般認(rèn)為，一般認(rèn)為，宇宙宇宙產(chǎn)生于產(chǎn)生于140億年前一次大爆炸中。億年前一次大爆炸中。大爆炸后，分子碰撞，產(chǎn)生光、熱。大爆炸后大爆炸后，分子碰撞，產(chǎn)生光、熱。大爆炸后30億年宇宙，最初的物質(zhì)漣漪出現(xiàn)。大爆炸后億年宇宙，最初的物質(zhì)漣漪出現(xiàn)。大爆炸后20億億30億年，類星體逐漸形成。大爆炸后億年，類星體逐漸形成。大爆炸后100億年，億年，太陽誕生。太陽誕生。38億年前地球上的生命開始逐漸演化。億年前地球上的生命開始逐漸演化。由兩顆或兩顆以上星球所形成的繞轉(zhuǎn)運動組合體叫做由兩顆或兩顆以上星球所形成的繞轉(zhuǎn)運動組合體叫做星系星系，是宇宙中最大、最美麗的天體系統(tǒng)之一。人們，是宇宙中最大、最美麗的天體系統(tǒng)之
2、一。人們已在宇宙觀測到約一千億個星系。有的離我們較近已在宇宙觀測到約一千億個星系。有的離我們較近可以清楚地觀測到它們的結(jié)構(gòu)；有的非常遙遠，目前可以清楚地觀測到它們的結(jié)構(gòu)；有的非常遙遠，目前所知最遠的星系離我們將近一百五十億光年。所知最遠的星系離我們將近一百五十億光年。銀河系銀河系是由恒星和星系物質(zhì)組成的巨大的、盤狀系是由恒星和星系物質(zhì)組成的巨大的、盤狀系統(tǒng)，太陽系位于銀河系中。銀河系中眾多繁星的光統(tǒng)，太陽系位于銀河系中。銀河系中眾多繁星的光形成銀河，成為環(huán)繞夜空外形不規(guī)則的發(fā)光帶。銀形成銀河，成為環(huán)繞夜空外形不規(guī)則的發(fā)光帶。銀河系是構(gòu)成宇宙的億萬個星系中的一個。河系是構(gòu)成宇宙的億萬個星系中的一
3、個。太陽系太陽系是以太陽為中心，有是以太陽為中心，有8顆行星、至少顆行星、至少165顆已知顆已知的衛(wèi)星、的衛(wèi)星、5顆已經(jīng)辨認(rèn)出來的矮行星和數(shù)以億計的太顆已經(jīng)辨認(rèn)出來的矮行星和數(shù)以億計的太陽系小天體。依照至太陽的距離，行星依序是水星、陽系小天體。依照至太陽的距離，行星依序是水星、金星、地球、火星、木星、土星、天王星和海王星。金星、地球、火星、木星、土星、天王星和海王星。8顆行星中的顆行星中的6顆有天然的衛(wèi)星環(huán)繞。顆有天然的衛(wèi)星環(huán)繞。YUri Gagarin,1961年年4月月12日，蘇聯(lián)發(fā)射世界第一艘載人飛船日，蘇聯(lián)發(fā)射世界第一艘載人飛船“東東方方”1號號，是世界上第一個載人航天器。蘇聯(lián)航天員是
4、世界上第一個載人航天器。蘇聯(lián)航天員加加林加加林乘飛船繞地飛行乘飛船繞地飛行108分鐘，安全返回地面，成分鐘，安全返回地面，成為世界上為世界上進入太空飛行的第一人進入太空飛行的第一人。1968 年年12月月27日日,阿波羅阿波羅8號號(Apollo 8)第一次載人的第一次載人的月球行動月球行動,在完成了歷時六天在完成了歷時六天的歷史性航行后的歷史性航行后,安全返回地球安全返回地球。美國美國“阿特蘭蒂斯阿特蘭蒂斯”號航天飛機（號航天飛機（STS Atlantis）與國際空間站成功實現(xiàn)對接）與國際空間站成功實現(xiàn)對接“嫦娥一號嫦娥一號”月球探測衛(wèi)星于月球探測衛(wèi)星于2007年年10月月24日在西昌衛(wèi)星中
5、心發(fā)射升空。日在西昌衛(wèi)星中心發(fā)射升空。2009年年3月月1日成功撞擊月球，為我國探月一期工日成功撞擊月球，為我國探月一期工程畫上圓滿句號。程畫上圓滿句號?！版隙鸲栨隙鸲枴庇谟?010年年10月月1日成功日成功升空對月球虹灣地區(qū)進行高清晰度拍升空對月球虹灣地區(qū)進行高清晰度拍攝攝,將為嫦娥三號衛(wèi)星發(fā)射和著陸做好將為嫦娥三號衛(wèi)星發(fā)射和著陸做好準(zhǔn)備。準(zhǔn)備?！版隙鹑栨隙鹑枴薄皯驯驯А敝兄袊纵v月球車國首輛月球車“玉兔號玉兔號”飛天落月。飛天落月。“神舟五號神舟五號”飛船是我國第一艘載人飛船是我國第一艘載人飛船飛船，乘有一名航天員，在軌道運行了一天。將航乘有一名航天員，在軌道運行了一天。將航天員
6、的生理數(shù)據(jù)、電視圖像發(fā)送地面，中國天員的生理數(shù)據(jù)、電視圖像發(fā)送地面，中國成為第三個有能力獨自將人送上成為第三個有能力獨自將人送上太空太空的國家。的國家。Fei Junlong Nie Haisheng“神舟六號神舟六號”與與“神舟五號神舟五號”在外形上沒有在外形上沒有差別，為推進艙、返回艙、軌道艙結(jié)構(gòu)，差別，為推進艙、返回艙、軌道艙結(jié)構(gòu)，重量在重量在8噸左右，用長征二號噸左右，用長征二號F型運載火型運載火箭發(fā)射。它是中國第二艘搭載太空人的飛箭發(fā)射。它是中國第二艘搭載太空人的飛船，是中國第一艘執(zhí)行船，是中國第一艘執(zhí)行“多人多天多人多天”任務(wù)任務(wù)的載人飛船。的載人飛船。the Shenzhou-8
7、 manned spaceship“神舟八號神舟八號”發(fā)射升空后，與天宮發(fā)射升空后，與天宮一號對接，成為一座小型空間站。一號對接，成為一座小型空間站?！吧裰劬盘枴陛d人宇宙飛船，載人宇宙飛船，2012年年6月月16日日18時時37分發(fā)射，與天宮一號實施自動交會分發(fā)射，與天宮一號實施自動交會對接，是中國實施首次載人空間交會對接。對接，是中國實施首次載人空間交會對接。并于并于2012年年6月月29日日10點點00分安全返回，分安全返回，這也是載人航天飛船首次在夏季發(fā)射。這也是載人航天飛船首次在夏季發(fā)射。the Shenzhou-9 manned spaceshipModule 3 Journey t
8、o spaceUnit2We have not found life on any other planets yet.Unit2We have not found life on any other planets yet.Module 3 Journey to spaceUnit2 We have not found life on any other planets yet.-reading for main ideassaepms.the Galaxyungalaxiessolar systemuniverseBrainstorming=the Milky WayWhat things
9、 can you think of(你會想到什么你會想到什么)?paceshipstronautarthlanetoon1.the Galaxy2.planet 3.solar system4.star 5.galaxy 6.universeMatch the words with the meanings in Chinese.A.行星行星B.銀河系銀河系C.星系星系D.恒星恒星E.太陽系太陽系F.宇宙宇宙1.Anyone out there?2.Life on Earth3.The sun and other stars4.The stars at nightRead the passag
10、e and choose the best title for it.Task 1P20Anyone out there?Read Paragraph 1 and choose the main idea for it.Whats the main idea of Paragraph 1?B.Scientists havent found life on any other planets.A.Scientists have found life on some other planets.Where can we find the main idea?Tip1:Pay attention t
11、o the last sentence.No,we havent.There has been life for hundreds of millions of years.（已經(jīng)有已經(jīng)有）（數(shù)億年，上億年數(shù)億年，上億年）Read Paragraph 1 again and answer the questions.Read Paragraph 2 and choose the main idea for it.Whats the main idea of Paragraph 2?A.The earth is a planet and it goes around the sun.B.It t
12、ells us something about the solar system and the Galaxy.C.There are billions of stars in the Galaxy,and our sun is only one of them.Where can we find the main idea?Tip2:Pay attention to the key words.Read Paragraph 2 and check()the true sentences.1.The earth is a star.2.The sun is a star.3.There are
13、 seven planets in the solar system and they go around the sun.4.There is only one star in the Galaxy.planet eight There are billions of starsThe earth goes around the sun,and_other planets go around the sun too.The sun and its planets are called_.Our solar system is part of_.There are_ stars in the
14、Milky Way,and our_ is only one of them.Read Paragraph 2 and fill in the blanks.seventhe solar systemthe Galaxy or the Milky Way billions ofsunthat指代什么指代什么？Read Paragraph 3 and choose the main idea for it.Whats the main idea of Paragraph 3?B.Its impossible to imagine.A.Scientists have discovered many
15、 other galaxies.Where can we find the main ideas?Tip3:Pay attention to the first sentence.1.There is one galaxy in the universe.2.The light from the stars in other galaxies has to travel for a long time to reach the sun.3.Scientists can imagine how large the universe is.There are more than one/many
16、other galaxiesRead Paragraph 3 and correct the mistakes.us /the earth cantRead Paragraph 4 and choose the main idea for it.Whats the main idea of Paragraph 4?A.Scientists have sent spaceships to the planet Mars to take photos.B.Scientists have done lots of things with the help of spaceships.Where ca
17、n we find the main ideas?Scientists have done a lot of things with the help of the_in the universe.They have even_spaceships to the_Mars to take_.They have even sent spaceships to travel outside the_.Now no spaceships has travelled far enough to reach other_ in our Galaxy.But it will be possible one
18、 day.Read Paragraph 4 and complete the passage with the right form of the words in the box.send,solar system,spaceship,star,photo,planetspaceshipssentplanetphotossolar systemstarsT or Paragraph 1:reading for main ideasParagraph 2:Paragraph 3:Paragraph4:Paragraph5:the universeScientists havent found
19、life on any other planets.It tells us something about the solar system and the Galaxy.Scientists have discovered many other galaxies.Scientists have done lots of things with the help of spaceships.Scientists still have some questions about the universe.Tip1:Pay attention to the key words.Tip2:Pay at
20、tention to the first or the last sentence.1.Use the reading skills we have learned today to fininsh the reading exercise on Page2.(應(yīng)用應(yīng)用本節(jié)課所學(xué)到的閱讀策略完成閱讀理解。本節(jié)課所學(xué)到的閱讀策略完成閱讀理解。)2.Read the passage of Unit2 after the tape.(聽磁聽磁帶并朗讀課文帶并朗讀課文)Homeworksaepss.the Galaxypaceshipstronautuntarslanetarthgalaxysolar
21、 systemuniverseBrainstormingthe Milky Waysaepss.the Galaxypaceshipstronautuntarslanetarthgalaxysolar systemuniverseBrainstormingthe Milky WayMatch the main ideas with the paragraphs.(將各段和主將各段和主要內(nèi)容相連線要內(nèi)容相連線)Para.1B.Scientists havent found life on any other planets.D.There is the solar system and the
22、Galaxy in the universe.E.Scientists have discovered many other galaxies.Para.4Para.3Para.5Para.2C.Scientists have done lots of things with the spaceships.A.Scientists still have some questions about the universeTask 2aeps.paceshipstronautuntarslanetarthuniverseBrainstormingssFill in the blanks.(根據(jù)句意
23、或中文補全句子根據(jù)句意或中文補全句子)1.The earth is a_and it goes around the_.2.The sun and its planets are called_.4.Scientists have discovered many other _(星系星系)in the_（宇宙）（宇宙）.3.Our solar system is only a small part of the_.（銀河系）（銀河系）6.It is _to imagine how large the universe is.planetsunthe solar systemGalaxyMilky Waygalaxiesuniverseimpossible5.Its a good chance to_(交流交流)with the scientist about the municate
八年級英語下冊 Module 3 Unit 2 We have not found life on any other planets yet課件 (1)
