八年级下册M3 Unit 2We have not found life on any other planets yet(42张)

1、Look at the picture and talk about what you know about Chinese spaceships.Shenzhou-9 is a manned(载人载人) spaceship.mnd “嫦娥一号嫦娥一号”(Change-1)月球探测卫星月球探测卫星于于2007年年10月月24日在西昌卫星中心由日在西昌卫星中心由“长征三号甲长征三号甲”运载火箭发射升空。经运载火箭发射升空。经过过8次变轨后，于次变轨后，于11月月7日正式进入工作日正式进入工作轨道。轨道。2009年年3月月1日在控制日在控制下成功撞击月球，下成功撞击月球，为我国探月一期工为我国探月

2、一期工程画上圆满句号。程画上圆满句号。“嫦娥二号嫦娥二号” (Change-2)于于2010年年10月月1日成功升空，这次最主要的一个任日成功升空，这次最主要的一个任务就是对月球虹湾地区进行高清晰度务就是对月球虹湾地区进行高清晰度的拍摄，而此次的拍摄将为嫦娥三号的拍摄，而此次的拍摄将为嫦娥三号卫星的发射和着陆做好前期准备。卫星的发射和着陆做好前期准备。“嫦娥三号嫦娥三号”(Change-3)“怀抱怀抱”中国首辆月球中国首辆月球车车“玉兔号玉兔号”飞天落月，飞天落月，“玉兔号玉兔号”于于2013年年12月月15日着陆。日着陆。 the universe?ju:nv:s Read the pass

3、age and choose the best title for it. 1. Anyone out there? 2. Life on the earth 3. The sun and other stars 4. The stars at night 123456Where can we find the answers?1. The earth is a star.2. The sun is a star.3. There is more than one galaxy in the universe.4. The light from the stars in other galax

4、ies has travelled for a long time to reach us. 5. Scientists have received many messages from space.6. Spaceships have visited most of the universe.Task 3P213 Check() the true sentences. planet part haventThe 1st Paragraph. Questions:1.How long has there been life on the earth? 2.Have we found life

5、on any other planets yet?There has been life on the earth for hundreds of millions of years. No, we havent.We planted _ trees last year. A. hundreds of B. hundred of C. five hundreds D. five hundred ofPractise1.What is called the solar system? What is it?2.How many planets are there in the solar sys

6、tem?3. Why dont scientists think theyll find life on the other planets? The sun and its planets are called the solar system.It is a small part of the Galaxy / the Milky Way.The 2nd Paragraph. Questions:There are eight planets.Because none of them has an environment like that of the earth.planetWhich

7、 is the smallest?staruniversegalaxysolar systemWhich is the largest?planetsmallstaruniversegalaxysolar systemlargethe earth(planet)the sungo aroundan environmentthe solar system(group of stars and planets)the Galaxybillions of starsEarth-planetstarsolar systemgalaxyuniverseWhat do you know about the

8、 universe?SunRead P22. The earth is a planet and it goes around the sun. Seven other planets also go around the sun. 地球是颗行星，它围绕着太阳转。此外还地球是颗行星，它围绕着太阳转。此外还有七颗行星也围绕着太阳转。有七颗行星也围绕着太阳转。 2) go around: 绕着绕着运转运转 The Earth goes around the Sun. 地球绕着太阳转。地球绕着太阳转。 Lets go around the town, not through it. 我们绕过这城镇吧

9、，不要穿过去了。我们绕过这城镇吧，不要穿过去了。 (1) none作不定代词作不定代词, 既可指人既可指人, 也可指也可指物物, 后可接后可接of结构；而结构；而no one只表示人只表示人, 后后面不能接面不能接of结构。结构。 (2) none作主语作主语, 指可数名词时指可数名词时, 后面动后面动词用单复数均可。词用单复数均可。none指不可数名词时指不可数名词时, 谓语动词用单数。谓语动词用单数。no one 作主语时作主语时, 谓语谓语动词要用单数形式。动词要用单数形式。如：如： None of us has been to Hong Kong. 我们之中没有人去过香港。我们之中没有

10、人去过香港。 No one can answer the difficult question. 没有人能回答这个难题。没有人能回答这个难题。We rang several times, but no one answered. 我们按了几次铃，但没有人来开门。我们按了几次铃，但没有人来开门。None of us has / have been to Sanya. 我们都没去过三亚。我们都没去过三亚。 Im hungry. Is there any bread in the fridge? _, but we have cakes. Would you like to have one? A.

11、 Some B. Much C. None D. NothingPractise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 oneNone3) other/the other/others/another这几个相类似的词容易弄混淆，其实意思大这几个相类似的词容易弄混淆，其实意思大相径庭。相径庭。other其它的（人或物）其它的（人或物）, 后面经常跟可数名后面经常跟可数名词复数形式；词复数形式； We havent found life on

12、 other planets yet. 我们还没有在其它的星球上发现生命。我们还没有在其它的星球上发现生命。（其他的星球不可能只有一个）（其他的星球不可能只有一个）the other（两者中的）另一个（两者中的）另一个,后面不可能跟后面不可能跟复数形式；复数形式； He has two daughters. One is a teacher, the other is a doctor. 他有两个女儿，一个是老师，另一个是医他有两个女儿，一个是老师，另一个是医 生。生。 （有且只有两个，两者中的另一个）（有且只有两个，两者中的另一个）others其它的人或物（已经包括在内）其它的人或物（已经包

13、括在内）, 后面后面不能跟名词，本身就含有名词的含义；不能跟名词，本身就含有名词的含义； Some people came by car, others came on foot. 有些人是坐汽车来的，其他人是走着来的。有些人是坐汽车来的，其他人是走着来的。（others后面不能再加名词）后面不能再加名词）another（三者以上中的，或不知道数量的）（三者以上中的，或不知道数量的）另一个另一个, 后面也不可跟复数形式。后面也不可跟复数形式。 Would you like another cup of tea? 你要再来有一杯茶吗？你要再来有一杯茶吗？（泛指再来一杯）（泛指再来一杯） What

14、 have scientists discovered?2. Why is it impossible to imagine how large the universe is? Theyve discovered many other galaxies in the universe. Because they are very far away and their light has to travel for many years to reach us.The 3rd Paragraph. Questions: Scientists have _ the planet Mars to

15、_. They have even sent spaceships to _ the solar system. However, no spaceship has travelled _ other stars in our Galaxy.The 4th Paragraph.sent spaceships totake photostravel outsidefar enough to reachPara 53. However, no spaceship has travelled far enough to reach other stars in our Galaxy. 然而，还没有任

16、何航天器能到达银河系然而，还没有任何航天器能到达银河系里的其他恒星。里的其他恒星。He is not old enough to join the army. 他年龄太小，不能参军。他年龄太小，不能参军。We have enough time to finish the work. 我们有充足的时间完成这项工作。我们有充足的时间完成这项工作。enough作作副词副词，修饰形容词或副词修饰形容词或副词时放在时放在被修饰词后面被修饰词后面；enough作作形容词形容词，修饰名修饰名词词时常放在时常放在被修饰词之前被修饰词之前。如：。如：形容词形容词/副词副词 + enough to do表示表示“

17、到达到达程度，会发生某结果程度，会发生某结果”。 He is old enough to go to school. 他到上学的年龄了。他到上学的年龄了。 He got up early enough to catch the first bus. 他起得很早，赶上了首班车。他起得很早，赶上了首班车。6. . 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，我们是孤独的宇宙中有这么多星球，我们是孤独的 吗，抑或太空中还有其他生命存在呢？吗，抑或太空中

18、还有其他生命存在呢？这里这里with so many stars in the universe是介是介 词短语，在句中作状语。词短语，在句中作状语。with + 名词名词 + 介词短语介词短语,在句中做状语，在句中做状语，表示表示伴随情况伴随情况。 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。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。Pr

19、actise 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 4. With so many stars in the universe, are we alone, or is there life 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 alo

20、ne in the classroom. 我独自在教室里。我独自在教室里。 To tell you the truth, I dont feel like being alone tonight. 说实话说实话, 我今晚不想孤单一人。我今晚不想孤单一人。 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. 她独自一人住在那栋房子里。她独自一人住在那栋房子里。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lonel

21、y的区别的区别 alone侧重于说明独自一人侧重于说明独自一人,没有人没有人陪伴陪伴, 不强调主观感情；不强调主观感情；lonely形容人时形容人时, 则表示情感上则表示情感上“孤孤独的；寂寞的独的；寂寞的”, 常作表语。常作表语。如：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。她感觉很孤独。practiceHe lives _, but he never feels_.A. lonely; alone B. lonely; lonely C. a

22、lone; lonely D. alone; alonePractice根据汉语提示完成单词。根据汉语提示完成单词。1. 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 _(寂寂寞的寞的). alonelonelythe Sunthe Mercurythe Earththe Venusthe Marsthe Jupiterthe Saturnthe Uranusthe Neptunethe

23、 Pluto the solar system 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 Milky Way the Galaxy / the Milky Way 银河系银河系There are _ stars in the Milky Way.billions ofOur solar system is

24、a small part of _.the Milky Way = the Galaxy银河系银河系It is _ to imagine.宇宙宇宙galaxiesgalaxiesimpossibleimpossibleScientists have discovered many other_ in the universe.So how large the universe is? The sun and its planets are called _The earth is a _ and it goes around the sun. _ other planets go around

25、 the Sun.planet Seventhe solar system 太阳系太阳系the Galaxy / the Milky Way the Galaxy / the Milky Way 银河系银河系There are _ stars in the Milky Way.billions ofOur solar system is a small part of _.the Milky Way = the Galaxy银河系银河系It is _ to imagine.宇宙宇宙galaxiesgalaxiesimpossibleimpossibleScientists have disco

26、vered many other_ in the universe.So how large the universe is?The earth is a _ and it _ the sun. Scientists think that life on the earth for _ years. planetgoes aroundhundreds of millions ofHowever, have we found life on any other planets yet?there has beenScientists have sent _to the planet Mars t

27、o take photos. spaceshipsThey have even sent spaceships _(travel) outside the solar system.to travel 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 the earth. Spaceships from the earth have done surveys of the other planets, but

28、 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 the (5)_ yet, but some scientists believe that they will find it some day. communicate environment none solar system universe solar sy

29、stem noneenvironmentcommunicateuniverseComplete the passage with the words and expressions in the box.P21Task 5What have the scientists just received? (a message from one of our spaceships)Look at the picture from a science story for children and answer the questions.P215Theyve just received a messa

30、ge from one of our spaceships.1. Where has the spaceship landed? (Mars)2. What has the spaceship discovered? (people on Mars)The spaceship has landed on Mars.The spaceship has discovered people on Mars.3. Why have the people on Mars not sent us a message? (do not know how to)4. Why have the people o

31、n Mars not visited us on the earth? (do not know how to)The people on Mars havent sent us a message because they dont know how to communicate with us.They havent visited us on the earth because they dont know how to fly to our planet.Look through the passage again and pay attention to the sentences

32、show the logic.Para. 1: However, we have not found life on any other planets yet.Para. 2: Seven other planets also go around the sun.Para. 3: Scientists have also discovered many other galaxies in the universe.Para. 4: They have even sent spaceships to travel outside the solar system.Write a passage

33、 to describe the picture. Use your answers to the questions in Activity 5 to help you.We have just received a message from our spaceship to MarsP216Tip: 在写的过程中要注意句子间的过在写的过程中要注意句子间的过渡和逻辑关系。渡和逻辑关系。.从括号内选出合适的词语完成句子。从括号内选出合适的词语完成句子。1. I went to the concert last night. My five _ (other/others) friends went, too.2. There are three books but Li Lei likes _ (no one/none) of them.3. The weather in Shenzhen is different from _ (that/it) in Heilongjiang.4