《八年級英語下冊 Module 3 Unit 2 We have not found life on any other planets yet課件》由會員分享，可在線閱讀，更多相關(guān)《八年級英語下冊 Module 3 Unit 2 We have not found life on any other planets yet課件（46頁珍藏版）》請在裝配圖網(wǎng)上搜索。

1、earth moonspaceshipastronautspace travelScientists have sent spaceship to Mars.The journey has taken several months.Astronauts have already been to the moon.No one has been to Mars yet,because Mars is very far away,much farther than the moon.Lots of scientists are working hard in order to send astro

2、nauts to Mars one day.Scientists think that there has been life on the Earth for hundreds of millions of years.However,we have not found life on any other plants yet.The Earth is a plant and it goes around the sun.Seven other planets also go around the sun.None of them has an environment like that o

3、f the earth,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

4、 of them.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 spaceship to the planet Mars to take photos.They have even sent s

5、paceships to travel outside the solar system.However,no spaceship has travelled far enough to reach other stars in our Galaxy.Look at the picture and talk about what you know about Chinese spaceships.Shenzhou-9 is a manned spaceship.Read the passage and choose the best title for it.1.Anyone out ther

6、e?2.Life on the earth 3.The sun and other stars 4.The stars at night 1.The earth is a star.2.The sun is a star.3.There is more than one galaxy in the universe.Check()the true sentences.4.The light from the stars in other galaxies has travelled for a long time to reach us.5.Scientists have received m

7、any messages from space.6.Spaceships have visited most of the universe.Complete the passage with the words and expression in the municate environment none solar system universeIs 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.

8、solar systemnoneenvironmentSpaceships 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 the(5)_ yet,but some scientists believe th

9、at they will find it some municateuniverse 1.Scientists think that there has been life on the Earth for hundreds of millions of years.科學(xué)家認(rèn)為地球上的生命已經(jīng)有億萬年科學(xué)家認(rèn)為地球上的生命已經(jīng)有億萬年 了。了。millions of 數(shù)百萬數(shù)百萬 hundreds of 數(shù)百數(shù)百thousands of 成千上萬成千上萬 billions of 數(shù)十億數(shù)十億e.g.There are billions of stars in the Galaxy,and ou

10、r sun is only one of them.銀河系中有數(shù)十億顆恒星，我們的太銀河系中有數(shù)十億顆恒星，我們的太陽只是其中的一個。陽只是其中的一個。2.However,we have not found life on any other planets yet.然而，我們還沒有在任何其他行星上然而，我們還沒有在任何其他行星上發(fā)現(xiàn)生命。發(fā)現(xiàn)生命。yet 用于否定句和疑問句，意思是用于否定句和疑問句，意思是“還，還，尚尚”。not yet 的意思是的意思是“還沒，尚還沒，尚未未”，表示某事物在某一時間尚未發(fā)生，表示某事物在某一時間尚未發(fā)生，但未來也許會發(fā)生。例如：但未來也許會發(fā)生。例如：I

11、havent learnt any farther information yet.我還沒有得到進(jìn)一步的信息。我還沒有得到進(jìn)一步的信息。Have you received her letter yet?你收到她的來信了嗎？你收到她的來信了嗎？3.The Earth is a planet and it goes around the sun.Seven other planets also go around the sun.地球是顆行星，它圍繞著太陽轉(zhuǎn)。此外地球是顆行星，它圍繞著太陽轉(zhuǎn)。此外還有七顆行星也圍繞著太陽轉(zhuǎn)。還有七顆行星也圍繞著太陽轉(zhuǎn)。太陽系的其他七顆行星：太陽系的其他七顆行星：水

12、星水星(Mercury)、金星、金星(Venus)、火星、火星(Mars)、木星木星(Jupiter)、土星、土星(Saturn)、天王星、天王星(Uranus)、海王星、海王星(Neptune)。4.None of them has an environment like that of the earth,so scientists do not think they will find life on them.他們中沒有一個有像地球這樣的環(huán)境，因他們中沒有一個有像地球這樣的環(huán)境，因此科學(xué)家們認(rèn)為在他們上面找不到生命。此科學(xué)家們認(rèn)為在他們上面找不到生命。none of 表示（三個以上）一

13、個也沒表示（三個以上）一個也沒 有。做主語時，謂語動詞可用單數(shù)或復(fù)有。做主語時，謂語動詞可用單數(shù)或復(fù) 數(shù)。數(shù)。e.g.None of us has/have been to the Mars.我們中沒一個去過火星。我們中沒一個去過火星。5.our solar system is a small part of a much larger group of stars and planets,called the Galaxy or the Milky Way.我們的太陽系只是一個由恒星和行我們的太陽系只是一個由恒星和行星組成的星系的一小部分，這個星系星組成的星系的一小部分，這個星系比太陽系大得

14、多，稱作銀河系或銀河。比太陽系大得多，稱作銀河系或銀河。這里的這里的the Galaxy專指專指“銀河系銀河系”，也，也可以稱作可以稱作 the Milky Way。而。而galaxy則則泛指泛指“星系星系”。e.g.Scientists have discovered a distant galaxy.科學(xué)家們發(fā)現(xiàn)了一個遙遠(yuǎn)的星系?？茖W(xué)家們發(fā)現(xiàn)了一個遙遠(yuǎn)的星系。6.So how large is the universe?Its impossible to imagine.所以宇宙有多大？我們無從想象。所以宇宙有多大？我們無從想象。句型句型:It is+形容詞形容詞+to+動詞原形動詞原形，

15、意思是意思是“做某事很做某事很”e.g.It is difficult to read these words.讀這些單詞很難。讀這些單詞很難。7.With so many stars in the universe,are we alone,or is there life out there in space?宇宙中有這么多星球，我們是孤獨(dú)的宇宙中有這么多星球，我們是孤獨(dú)的嗎？或者太空中還有其他生命存在呢？嗎？或者太空中還有其他生命存在呢？with+名詞名詞+介詞短語，表示伴隨情介詞短語，表示伴隨情況，意思是況，意思是“帶著帶著”。e.g.Mr.Zhang is coming with a

16、 book in his hands.張老師手里帶著一書進(jìn)來了。張老師手里帶著一書進(jìn)來了。alone 在句中作形容詞，不作定語只做在句中作形容詞，不作定語只做表語，也可作副詞。意思是表語，也可作副詞。意思是“獨(dú)自地獨(dú)自地”。e.g.She was alone in that dark room.她獨(dú)自一人呆在那黑屋子里。她獨(dú)自一人呆在那黑屋子里。Look at the picture from a science story for children and answer the questions.What have the scientists just received?(a messa

17、ge from one of our spaceships)They have just received a message from one of our spaceships.1.Where has the spaceship landed?(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

18、 on Mars.We do not know how to send us a message.4.Why have the people on Mars not visited us on the earth?(do not know how to)We do not know how to visit us on the earth.Write a passage to describe the picture.Use your answers to the questions in Activity 5 to help you.We have just received a messa

19、ge from our spaceship to Mars _1.Wheres Mr Green?He _ to Changsha.(2013湖南湘西湖南湘西)A.have been B.has gone C.has been2.Is Tom at home?No,he_ to town.(2013天津天津)A.has been B.has gone C.goes D.will go 3.He promised to pick me up at the school gate.However,he _ yet.(2011安徽安徽)A.didnt arrive B.doesnt arrive C.isnt arriving D.hasnt arrived4.What is the weather like this summer here?There _ very little rain.(2011廣州廣州)A.has B.has been C.are D.have been5.A number of tourists _ Yangzhou many times because it is such a beautiful city.(2013揚(yáng)州揚(yáng)州)A.have been to B.has been to C.has gone to D.have gone to