Module3 Sports Unit2 课件（共22张PPT） 2024-2025学年外研版八年级下册

(共22张PPT)
Module 3 Journey to space
Unit 2
We have not found life on any other planets yet.
Lead in
Discuss something about the universe.
1. How many planets are there in the universe
2. Is there any life on other planets
Yuri Gagarin,
Soviet Union
12, April,1961
1968 年12月27日,阿波罗8号——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。
Who is he
He is China’s first astronaut.
The Shenzhou-V spacecraft orbited the Earth 14 times at an altitude of 343 kilometres. The space flight lasted 21 hours by Yang Liwei in October, 2003. Yang Liwei was called “China’s first astronaut”.
【学习目标】
1. To understand the conversation about the space mission to Mars.
2. How to use present perfect tense to describe the space.
3.能够读懂以太空为主题的文章, 能简单描述人类对太空的探索。
4.通过了解中国在太空探索领域取得的伟大成就, 增强民族自豪感, 通过太空知识的学习, 培养学生对天文知识的兴趣和对未知事物的探索精神。
1.Match the words with the pictures.
A. galaxy
B. planet
C. solar system
D. star
E. universe
C
B
A
D
E
【教材回顾】
2.Read the passage and choose the best title for it.
1. Anyone out there
2. Life on earth
3. The sun and the stars
4. The stars at night
3.Check (√) 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.
(×)
(×)
(×)
(√)
(√)
(√)
4.Complete the passage with the words and expression in the box.
communicate doubt environment none solar system universe
Is there life on other planets There are
eight planets in our ____________,but _____ of
them has a(n) _____________like that of the
earth.Spaceships from the earth have done
surveys of other planets, but they have not found
any life there. Why has no one from other planets
tried to ___________ with us It is true that scientists
have not discovered life on other planets in the
________yet, but some scientists do not ______ that
they can find it some day.
solar system
none
environment
communicate
universe
doubt
Look at the cartoon picture and answer the questions.
— What have the scientists just heard
(a message from a spaceship)
— They’ve just heard a message from a spaceship.
Have a try
Write the story in the picture. Use the answers to the questions in Activity 5 to help you.
We’ve just heard that
our spacecraft has
landed on Mars, and
we’ve discovered…
Possible version:
We’ve just had some news about the mission to explore Mars. Scientists have just heard that the spaceship 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.
Language Points
1.However, we have not found life on any other planets
yet.但是，我们在其他星球上还没有发现生命。
the other (s)与other (s)的区别：
(1) the other与other后可加名词;
the others与others后不加名词；
(2) the other (s)表示一定范围内除去一部分以外后其余
的全体；other (s)表示除去一部分以后的（一些），
但不是剩下 的全体。
【探究· 导学】
科学探究与创新意识
One flower is red, the other (one) is white.
一朵花是红的，另一朵 (花) 是白的。
Give me some other apples/others, please!
请另给我一些（苹果）吧！
2. None of them has an environment like that of the earth. 它们中没有一个有像地球这样的环境。
no one与none的区别：
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；
3. With so many stars in the universe, are we alone？
宇宙中有这么多的恒星，我们是唯一的吗？
alone与lonely的区别：
(1) alone既可作形容词，又可作副词,意为“单独的/地，独自的/地”，没有感彩。
(2) lonely只作为形容词，意为“孤独的，寂寞的”，具有感彩。
He lived alone after his wife left，so he was very lonely .
他妻子离开后，他一个人生活，所以他很孤独。
【课堂小结】
Unit2
词汇:
none, environment, that, solar, system, solar system, group, galaxy, universe, light, impossible, take-took-taken, out, communicate
2. 句型:
①Scientists think that there has been life on the earth for hundreds of millions of years.
②However, we have not found life on any other planets yet.
③Scientists have also discovered many other galaxies in the universe.
④It is impossible to imagine.
【训练· 评价】
一、根据句意写单词。
1. Everyone knows ______ travels much faster than
sound.
2. ______ of us likes this bad TV programme.
3. The solar system is a small part of our________.
4. We haven’t _________ life on other planets yet.
None
light
universe
discovered
二、句型转换。
1. I have been to America before.（变成一般疑问句）
_________________________________
2. have, finished, not, I, homework, my（连词成句）
_________________________________
3. She ___________ the Great Wall twice.（选 has gone to/has been to 填空）
Have you been to America before
I have not finished my homework.
has been to
Great hopes make great man.
伟大的抱负造就伟大的人物。