课件31张PPT。Revise the new words1.[n?n]
2[?n'va?r?nm?nt]
3. [e?t]
4. ['s??l?(r)]
5. ['s?st?m]
6. [ɡru:p]
7. ['ɡ?l?ks?]
8. [?ju:n?v?:s]
9. [la?t]
10. [?m?p?s?bl]
11. [a?t]
12. [k?'mju:n?ke?t] none
environment
that
solar
system
solar system
group
galaxy
universe
light
impossible
out
communicate pron.没有一人
n.环境
pron.那，那个
adj.太阳的
n.系统，体系
星系，太阳系
n.群，组
n.星系
n.宇宙
n.光/光线/光亮
adj.不可能的
adv.在远方
v.联系，交流The earth is a ______ and it __________ the sun. Scientists think that there has been life on the earth for ______________________ years. Lead inplanetgoes aroundhundreds of millions ofHowever, have we found life on any other planets yet?Unit 2We have not found life
on any other planets yet. 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the Galaxy /
the Milky Way
银河系There are _________ stars in the Milky Way.
billions ofOur solar system is a small part of ____________.
太阳系the Milky Way = the Galaxy 银河系It is __________ to imagine. 宇宙galaxiesimpossibleScientists have discovered many other _________ in the universe.So how large the universe is?Scientists have sent ___________to the planet Mars to take photos. spaceshipsThey have even sent spaceships __________
(travel) outside the solar system.to travelLook at the picture and talk about what you know about Chinese spaceships.
Shenzhou-9 is a manned spaceship.When did we send it?
Where did we send it?
How long did it stay in space?
When did it return?
Who are the astronauts? on 16th of June, 2012
Jiuquan, Gansu Province.
Thirteen days.
on 29th of June, 2012
Liu Yang, Jing Haipeng, Liu Wang Liu Yang Jing Haipeng Liu Wang
1. Anyone out there?
2. Life on the earth
3. The sun and other stars
4. The stars at night √ Read the passage and choose the best title for it. What questions do you want to ask before you start to read?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 haven’t.The 2&3rd Para. 2.Put the words and expressions from the smallest to the largest :_____________ A. galaxy B. planet C. solar system D. star E. universeWhich is true?
A: Seven planets go around the sun.
B: there are only stars in the galaxy.
C. The solar system is larger than the galaxy.
D: the Environment(环境) of the earth is different from
that other planet in the solar system.√What are the sun and its planets called?
Is there only one galaxy in the universe?
How large is the universe?The solar system.No, there are many galaxies in the universe.It’s impossible to imagine.
Spaceships have travelled to ____________ and_______________________. But not reached _______________________yet,
because it is too_______.
The 4th Para.the planet Marsoutside the solar systemother stars in our GalaxyfarThe 5th Para.Have scientists discovered any life in outer space yet?No, not yet.Is there life out the solar system in space? We do not know the answers…yet.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 galaxies has
travelled for a long time to reach us.
5. Scientists have received many messages from
space.
6. Scientists have visited most of the universe.Check the true sentences:×√√√××Memory testScientists think that there has been life on the earth for
hundreds of millions of years. However, we have not
found life on any other planets yet.在地球上成百上千数百万数亿年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, 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 them.绕着转它们中没有一个be called 被叫做太阳系一小部分一个大得多的星群银河几十亿…之一none of … 表示（三个以上）一个也没有。做主语时，谓语动词可用单数或复数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 harge is the universe? It is impossible to
imagine.在宇宙里不得不这简直无法想象It is +adj for sb. to do sth.reach =arrive at/ in+地点=get to Scientists have sent spaceships to the planet Mars to take photos.
They have even sent spaceships to travel outside the solar system.
However, no spaceship has travelled far enough to reach other stars in our Galaxy.send sth to sp.发送…到拍照片太阳系adj./ adv enough to do sth足够做某事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 from
other planets? Why has no one communicated with us?
We do not know the answers…yet.with + 名词 + 介词短语，表示伴随情况，意思是“有……”。 在太空中 其他行星 没人 no one表示“没有人”，作主语时，谓语动词常用单数形式。communicate with sb. 与…联系/交流Spaceships 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 that they will find it some day.Complete the passage with the words and expression in the box. 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. solar systemnoneenvironmentcommunicateuniverse 1.成百万年
2.在其它的行星上
3.绕太阳转
4.他们中没有人
5.被叫做
6.太阳系
7.一小部分
8.几十亿的星星
9.在宇宙中
10.许多其他的星系
11.距离好远
12.不得不，必须
13.足够远
14. 如此多
15.和某人联系 millions of years
on any other planets
go around the sun
none of them
be called
the solar system
a small part of
billions of stars
in the universe
many other galaxies
far away
have/has to
far enough
so many
communicate with sb.phrases Key1.This city ________(call) Hangzhou.
2. The boy is old enough _______(look) after himself
3. It is impossible _________ (finish ) work today.
4. None of them ______(come) from China.
5. China has ________(billion) of people.
6. The Sun ___________(not go )around the earth.
7. _____the Scientists _____(send) spaceship to the moon yet?
8. We sent the spaceship to planets __________( discover) life .
9. One of ___________(galaxy) is the milky galaxy.
10. China _______(send) spaceships tens of years ago.
is calledto lookto finishcomesbillionsdoesn’t goHave sentto discovergalaxiessent注意：none 与no one（nobody） 的区别：
none既可指人也可指物，通常与表范围的of 短语连用；no one(=nobody)只能指人，不能与of 短语连用。
如：_________ of the reasons was true.
A. None B. No one C. All
(2) none与数量有关，可回答how many问句，表示“一个也没有”；而no one表示“什么人也没有”，可回答who问句。如： -Who are you speaking to?-_________.
-How many students are there in the room?
-_________.ANo oneNonethat是指示代词。为避免重复，可用 that 或 those 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. thatthosethat2. 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…，可以…
not + adj./ adv. + enough + to do sth. 不够…，不可以…
(1) 我们有足够的钱花。
We have ___________________________.
(2) 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。
He _______________________________________. enough money to spendfast enough toisn’t old enough to look after himselfWritingLook 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 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 on Mars.
They do not know how to send us a message.They do not know how to visit us on the earth. 4. Why have the people on Mars not visited us on the earth? (do not know how to)Homework Revise the language
points of unit 2.
2. Recite the text.
3. Do exercises of M3U2 in your WB.Thank you!Try to spell the words没有一人
环境
那，那个
太阳的
系统，体系
太阳系
群，组
星系
宇宙
光/光线/光亮
不可能的
在远方
联系，交流none
environment
that
solar
system
solar system
group
galaxy
universe
light
impossible
out
communicate
