新外研版八年级下册M3U2.ppt

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1、新外研版八年新外研版八年级下册下册M3U2The earth is a _ and it _ the sun.Scientists think that there has been life on the earth for _ years.planetgoes aroundhundreds of millions of数以百万计的数以百万计的However,have we found life on any other planets yet?none environment that solar pron.没有一人；没有没有一人；没有 一个；一点儿也一个；一点儿也 没有没有 n.环境环境

2、 pron.那；那个（指代那；那个（指代 已被提及的事物）已被提及的事物）adj.太阳的；与太阳有太阳的；与太阳有 关的关的Words and expressionssystem solar system group galaxy universe n.系统；体系系统；体系 星系；（尤指）星系；（尤指）太阳系太阳系 n.群；组群；组 n.星系星系 n.宇宙宇宙Words and expressionslight impossible outcommunicate n.光；光线；光亮光；光线；光亮adj.（事情）办不（事情）办不 到的，不可能的到的，不可能的 adv.在远方在远方 v.联系；交流

3、联系；交流Words and expressionsLook at the picture and talk about what you know about Chinese spaceships.Shenzhou-9 is a manned spaceship.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

4、system行星行星200 billion starsIts a part of the universe(宇宙宇宙).A.galaxyB.planet C.solar systemD.star E.universe Match the words with the pictures.ABCDEBPut the words and expressions from the smallest to the largest:A.galaxy B.planet C.solar system D.star E.universeBDCAECheck()the true sentences.1.The e

5、arth 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 galaxies 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.Answer some questions about the

6、 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 there in space?No,we havent.Eight.The universe.They have sent lots of spaceships.We dont know,w

7、e have never found any life on other planets.The 1st Para.Questions:1.How long has there been life on the earth?2.Have we found life on any other planets 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 planet

8、s 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 system.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

9、 earth.1.What 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 Para.Questions:Scientists have _ the planet Mars

10、to _.They have even sent spaceships to _ the solar system.However,no spaceship has travelled _ other stars in our Galaxy.The 4th Para.sent spaceships totake photostravel outsidefar enough to reach1.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

11、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 sunnone of thembe calledthe solar systema small part ofbillions of starsin the universemany other galaxiesfar awayhave/has tofar enoughso manycommunicate with sb.1.S

12、cientists 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已经有上亿年科学家们认为地球上的生命已经有上亿年的历史。的历史。hundred前加前加基数词基数词，表示，表示“一百、二百、一百、二百、三百三百”，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

13、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 hundred ofthousand,million,billion和和hundred的用的用法相同。法相同。Practise2.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？宇宙

14、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？抑或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。with so many stars in the universe是介词是介词短语，短语，作伴随状语作伴随状语。类似的例子还有：。类似的例子还有：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 W

15、hy 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 3.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

16、。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：(1)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：None of us has/have

17、 been to Sanya.我们都没去过三亚。我们都没去过三亚。(2)none与与数量数量有关，有关，可回答可回答how many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?-_.No oneNonethat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 those 来来代替前面已提到过的人或事物；代替前面已提到过的人或事物；1.The a

18、ir in the countryside is fresher than _in the city.2.The streets in the city are wider and the buildings are taller than _ in the county.3.The environment is much cleaner than _ in the city.4.The population of Shanghai is much larger than _ of Nanning.thatthosethatthat4.However,no spaceship has trav

19、eled far enough to reach other stars in our Galaxy.然而，没有一个航天器去到足以然而，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。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 _.(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 so

20、on.(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 himselfComplete 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

21、them has a(n)(3)_ like that of the earth.solar system noneenvironmentSpaceships 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

22、the(5)_ yet,but some scientists believe that they will find it some municateuniverseQuiz.用方框中的单词的正确形式完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

23、 like to go online when I am _ at home.4.A:How many people are there in China now?B: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完成下列句完成下列句子。子。1.I have _ done the heavy work and now I feel very tired.2.Mary,have you

24、 read any books about Mars?No,I have _ read a word about it.justnever 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

25、误，请指出并改正。改正。1.My mother isnt in.She has been to the supermarket._ 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._gonemillionsItHow many planets are there in the solar system?Do you know how to say their names in English?金金星星地地球球火火星星木木星星土星土星水水星星天王星天王星冥王星冥王星海王星海王星Space&Earth谢谢大家！结结 语语