课件48张PPT。Module 3Journey to spaceUnit 2We have not found life
on any other planets yet.Period One水星金星火星木星土星天王星海王星Do you know them?The Earth is a planet and it ___________ (围绕着……转)the sun. Learn the new words.goes around行星a star恒星Seven other planets also go around the sun. _____(没有一人;没有一个; 一点儿也没有)of them has an ___________(环境) like that of the earth, so scientists do not think they will find life on them. Noneenvironment/i/ /ai/?/ /?/The sun and its planets are called ________________ (太阳系).the solar system太阳的，与太阳有关的/?u/ /?/There are billions of (数以亿计的)stars in the_________ (星系), and our sun is only one of them. GalaxyScientists have also discovered many other galaxies in the __________ (宇宙). universe none
environment
that
solar
pron. 没有一人；没有
一个；一点儿也
没有
n. 环境
pron. 那；那个（指代
已被提及的事物）
adj. 太阳的；与太阳有
关的Words and expressionsLet’s read together.system
solar system
group
galaxy
universe
n. 系统；体系
星系；（尤指）
太阳系
n. 群；组
n. 星系
n. 宇宙Words and expressionslight
impossible
out
communicate n. 光；光线；光亮
adj. （事情）办不
到的，不可能的
adv. 在远方
v. 联系；交流Words and expressionsRemember to read the new words again and again.观看视频What’s the movie about ?课题观看视频课题It’s about Aliens. (外星人)Has anyone lived on any other planets ?Let's read the passage
and try to find out.Read the passage quickly 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 √ Task 1: Fast reading.Task 2: Careful reading.1. Read P1- 2, and chooses the best answers.
(1) How long has life been on the earth? ( )
a. Hundreds of years. b. Millions of years.
c. Hundreds of millions of years.
(2) How many planets does the sun have? ( )
a. Seven b. Eight c. Nine
cb2. Read P2-3, and compare.
galaxy ＜＜＜solar system sununiverse3、Read P4-5, and check the true sentences.
(1) Scientist haven’t sent spaceships to travel
outside the solar system . ( )
(2) To the universe, scientists have many questions without answers. ( )
√×have1.Read the passage with the tape .
(跟录音读）Let's read!2.Read in groups loudly . (六人小组组内读）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.× √ √ planet4. 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. √ × × haven’thaven’t当堂训练：单项选择
( ) 1.The earth a planet and it around the sun.
A. are go B. was went
C. is go D. is goes
( ) 2. The sun and its planets are called .
A. Galaxy B. the solar system
C. Milky Way D. the universe( ) 3. There has been life the earth for hundreds of millions of years.
A. in B. on C. of D. at
( ) 4. He promised to pick me up at the school
gate. However, he _______ yet.
A. didn’t arrive??? B. doesn’t arrive?????
? C. isn’t arriving????? D. hasn’t arrived
( ) 5. Why has no one communicated us?
A. with B. to C. for D. at当堂训练：单项选择
( ) 1.The earth a planet and it around the sun.
A. are go B. was went
C. is go D. is goes
( ) 2. The sun and its planets are called .
A. Galaxy B. the solar system
C. Milky Way D. the universe( ) 3. There has been life the earth for hundreds of millions of years.
A. in B. on C. of D. at
( ) 4. He promised to pick me up at the school
gate. However, he _______ yet.
A. didn’t arrive??? B. doesn’t arrive?????
? C. isn’t arriving????? D. hasn’t arrived
( ) 5. Why has no one communicated us?
A. with B. to C. for D. atHomework:
Read new words and passage for three times.
Finish the exercises in Activity4.Unit 2We haven’t found life on other planets yet.
(Period 2)
Look at the picture and talk about what you know about Chinese spaceships.
Shenzhou-9 is a manned spaceship.Work in pairsScientists have sent lots of spaceship to the solar system. 1. Have they found any life out the universe
in space?
2. Are we alone in the universe?Read the passage together and find out the difficulties. go aroundon the earthinhundreds millions billions ofnonesystemother planetscalledpart offar enoughwitha group of一、根据中文意思在对话中找出短语：
（1）___________围绕…..转 (2) ____________在地球上
(3)_________ the universe 在宇宙
(4) _____________ of 成百上千
(5) ___________of数以百万计的
(6)______________ 数以亿计的
(7)solar ________________星系; (尤指)太阳系
(8) _______of ……中没有一个
(9) seven ________________其他七颗行星
(10) be ___________被称作
(11) a small _____________……中一小部分
(12)_________________足够远
(13) communicate ________ 与….交流
(14) ________________一群/组….. Language points1. 原句: Scientists 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的历史。
点拨：hundred 与具体数字连用, 不加”s” : two hundred 二百 hundreds of 不与具体数字连用.
thousand, million, billion和hundred的用法相同。
即学即练：There are ________ people in the zoo on Children’s Day.
A. one hundreds B. two hundreds of
C. hundreds of D. hundred ofC2、原句：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，因此科学家们认为在他们上面找不到生命。
点拨：none 用于表示对三者或三者以上全部否定的不定代词，既可指人，也可指物。作主语时，谓语可以是单数，也可以是复数; none的反义词是all, none可与 of 连用; 可以用来回答How many 或 How much开头的问句。
no one 同义词为 nobody, 只用于指人，其后
不跟of短语，作主语时谓语用单数，no one
只能回答以who开头的问句；
即学即练：
None of us _________ been to the Mars.
我们中没一个去过火星。
(2) No one_______ discovered any life in space yet. 还没有人发现太空里的任何生命。
(3)-Who are you speaking to? -_______( 没人)。
(4) -How many students are there in the room? -___________ (一个也没有) has/ havehasNo oneNone3.原句：So how large is the universe? It’s impossible to imagine.
所以宇宙有多大？我们无从想象。
点拨：句型: It is + 形容词 + to + 动词原形，意思是“做某事很……”。
即学即练：
It is difficult____________ these words. 读这些单词很难。to read4. 原句: However, no spaceship has travelled far enough to reach other stars in our Galaxy.
然而, 还没有宇宙飞船飞行足够远的距离到达我们银河系的其他恒星.
点拨：enough 修饰形容词或副词时要位于之后,常用结构为 “ adj. / adv.+ enough + to do”.
即学即练：She’s not strong enough ______ walking up mountains.
A. to go B. going C. go D. wentAA5. 原句: Why has no one communicated with us?
为什么还没有人和我们联系呢？
点拨：communicate with sb. 意为“与某人联系, 与某人沟通”
即学即练：我们应该经常和我们的父母沟通。
We should often with .our parentscommunicateComplete 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 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 that they will find it some day.communicateuniverse WritingLook 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.4. Why have the people on Mars not
visited us on the earth?
(do not know how to)They 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 message from our spaceship to Mars … ____________________________________________________________________________________________________________________________________当堂训练 Possible version:Possible version: We’ve just had some news about the
mission to explore Mars. Scientists have just heard that the spacecraft has landed on Mars and has discovered people. These people haven’t sent us a message because they can’t hear us. They haven’t visited the Earth because they prefer life on Mars. They have used parts from the other spacecraft from Earth to make TVs, radios and cars.Homework :
1.Write a short story about
the people on Mars.
2. Finish the exercises in Unit 2 in your Wb.Goodbye!
