八年级下>Module 3 Journey to space >Unit 2 We have not found life on any other planets yet

课件56张PPT。Module 3Journey to spaceUnit 2We have not found life on any other planets yet.ReviewRead the words and expressions loudly.单词回顾学生早读时已预习过本单元单
词，可利用几分钟时间带学生快速回顾温习。对单词的熟练度越高，阅读的速率也越高。 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 expressionssystem
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 expressionsDo you know the words and expressions in the box? Put them in order: small — large.galaxy planet solar system star universeplanet— star —solar system — galaxy— universeHow much do you know about the solar system?
How many planets are there in the solar system? Do you know how to say their names in English?金星地球火星木星土星水星天王星冥王星海王星Space & EarthYuri Gagarin,
Soviet Union
12, April,1961 1968 年12月27日, 阿波罗8号(Apollo 8)——第一次载人的月球行动, 在完成了历时六天的历史性航行之后, 安全返回地球。Neil Armstrong
尼尔 ? 阿姆斯壮
（登月第一人）名言：这是一个人的一小步，却是人类的一大步。
That’s one small step for a man, one giant leap for mankind.1986年1月28日,
“挑战者”号航天
飞机在肯尼迪航
天中心发射升空
不久后爆炸。美国宇航局2008年2月9日公布对接成功, “阿特兰蒂斯”号此次太空之行的主要任务是将欧洲建造的“哥伦布”实验舱送上国际空间站。美国“阿特兰蒂斯”号航天飞机（STS Atlantis ）与国际空间站成功实现对接“嫦娥一号”(Chang’e-1)月球探测卫星于2007年10月24日在西昌卫星中心由“长征三号甲”运载火箭发射升空。经过8次变轨后，于11月7日正式进入工作轨道。2009年3月1日在控制
下成功撞击地球，
为我国探月一期工
程画上圆满句号。“嫦娥二号” (Chang’e-2)于2010年10月1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。“嫦娥三号”(Chang’e-3)“怀抱”中国首辆月球车“玉兔号”飞天落月，“玉兔号”于2013年12月15日着陆。2007年，嫦娥1号月球探测器发射成功。也许在将来，我们能送一些人到月球上和嫦娥姐姐做伴了。1. To understand the passage about space travel involving present perfect tense
2. To learn some key words and useful expressions
3. To learn to use the following patterns:
We have just received a message.
We haven’t found life on any other planets yet.
Astronauts have already been to the moon.Objectives：Words:
other, prefer, also, none, alone, syetem, communicate, environment Phrases:
hundreds/millions of
any other planets go around
solar system in the universePatterns:
We have just done…
We haven’t done…yet.
We have already done...Work in pairs. Look at the picture and talk about what you know about Chinese spaceships.Shenzhou-9 is a manned spaceship.Skimming to get general idea1. Anyone out there?
2. Life on Earth
3. The sun and other stars
4. The stars at nightRead the passage and choose the best title for it. A. galaxy
B. planet
C. solar system
D. star
E. universe Match the words with the pictures.ABCDEBScanning to get detailed informationCheck(√) the true sentences.
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. Spaceships have visited most of the universe.√√×√××Careful reading
to solve
difficult pointsLanguage points1. 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。hundred前加基数词，表示“一百、二百、三百……”，hundred要用单数形式；hundred与of连用表示“数百”时，hundred要用复数形式，即hundreds of。例如：
There are eight hundred students in 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hundred的用法相同。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？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。这里with so many stars in the universe是介词短语，在句中作状语。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。Practise— Why do you always sleep ______?
— Because I’m afraid of the dark.
A. by yourself B. with the door open
C. with the window open D. with the light on 3. Why has no one communicated with us?
为什么没有人和我们联系呢？

We rang several times, but no one answered. 我们按了几次铃，但没有人来开门。no one表示“没有人”，作主语时，谓语动词常用单数形式。如：none 指三个或三个以上的人或物中“没有一个”，其后常接“of + 名词 / 代词”，后面动词单复数形式均可。None of us has / have been to Sanya.
我们都没去过三亚。— I’m hungry. Is there any bread in the fridge?
— _____, but we have cakes. Would you like to have one?
A. Some B. Much C. None D. NothingPractiseTips for teacherLet the word fly 板块是帮助学生学
习一些一词多义、熟词生义的词汇。
通过此环节，学生可以对一些常见
词的用法、意思有一个透彻的了解。Let the words fly1. 在……上空
A lamp hung over the table.
桌子上方悬吊着一盏灯。
2. 覆盖在……上
We spread a carpet over the floor.?? 我们给地板铺上了地毯。
3. 遍及；到处
I’ve travelled over most of Europe but
my favourite place was Austria.
我游历了欧洲的大多数地方, 最喜欢的
地方是奥地利。4. 在……期间
My grandchildren will stay over
Christmas.?
我的孙儿孙女们圣诞节期间会呆在这里。
5. 控制；支配
He rules over a large kingdom.
他统治着一个疆域辽阔的王国。
6. 与……有关
He’s having problems over his income tax.
他在所得税方面出了问题。Complete the passage with the words and expression in the box. communicate environment none solar system universe 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 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 the (5)_______ yet, but some scientists believe that they will find it some day.communicateuniverse— They’ve just heard a message from one of our spaceships.Writing— What have the scientists just received?
(a message from one of our spaceships)Look at the picture from a acience story for children and answer the questions.1. Where has the spaceship landed? (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)
4. Why have the people on Mars not visited us on the earth? (do not know how to)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…Possible version:We’ve just received a message from our spaceship to Mars. Our spaceship has discovered aliens there. They have never sent us a message because they don’t know how to communicate with us. They have not visited the earth because they don’t know how to fly to our planet, and they prefer life on Mars. They seem very happy on their planet. They have used parts from the other spaceships from the earth to make TVs, radios, etc. We hope they don’t do the same with this one!hundreds of millions of…
go around
none of them
in the universe
far enough
communicate with
in space本课时主要短语1. However, we have not found life on any other planets yet.
2. None of them has an environment like that of the earth.
3. Scientists have also discovered many other galaxies in the universe.
4. We do not know the answers yet.本课时主要句型Now 2 mins to test your spelling.Spelling Bee1. English-Chinese
solar system galaxy universe environment group light out
2. Chinese-English
联系、交流 没有一个 （事情）办不到的，不可能的When finished, exchange your papers to see who does the best.注: word 文档
点击此处链接QuizⅠ. 用方框中的单词的正确形式完成下列句子。
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 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 _______.alonebillionplanetsⅡ. 用already, yet, just, ever或never完成下列句子。
1. I have ______ done the heavy work
and now I feel very tired.
2. — Mary, have you 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. Don’t worry. We have _______ helped you sweep the classroom.
5. — Have you done your work _____?
— Sorry, but I will finish it in one hour.everalreadyyetⅢ. 下列各句中均有一处错误，请指出并改正。
1. My mother isn’t 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.
_________________________________　　　　　　　　　　　　　　　gonemillionsItHomeworkSearch for more information about universe. Preview the use of present perfect tense.
2. Preview the new words and expressions about space.PreviewThank you!