Module 3 Unit 2课件2023-2024学年度外研版英语八年级下册

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Module 3 Unit 2
We have not found life on any other planets yet.
八年级下
外研版
通过本课的学习，学生能够：
①识别文章主题，读懂以太空为主题的文章并能识别细节做出正误判断。
②掌握文章重要的语言知识点，并正确运用现在完成时描述图片完成写作任务。
③了解中国在太空探索中取得的伟大成就。
Learning Goals
没有一人；没有一个；一点也没有 [n n] pron.______________
环境[ n'va r nm nt] n. ______________
那；那个（指代已被提及的事物）[ t] pron.________________
太阳的；与太阳有关的 ['s l ] adj.________________
系统；体系['s st m] n.________________
星系；（尤指）太阳系 ________________
群；组[ɡru:p] n.________________
Words & Expressions
none
environment
that
solar
system
solar system
group
星系['ɡ l ks ] n.______________
宇宙[ ju:n v :s] n. ______________
光；光线；光亮[la t] n. ________________
（事情）办不到的，不可能的[ m p s bl] adj. ________________
在远方[a t] adv.________________
联系；交流[k 'mju:n ke t] v. ________________
galaxy
universe
light
impossible
out
communicate
Shenzhou 9 is a manned spaceship.
1 Work in pairs. Look at the picture and talk about what you know about Chinese spaceships.
Warming Up
Let’s enjoy a video to see what China has done to explore the universe.
The universe is so big that human still knows little about it. Do you know where the earth is in the universe
天体系统的层次
月球
地球
地月系
太阳系
河外星系
其他恒星系
银河系
其他行星—卫星系
the Solar System
the Milky Way
galaxies
Universe
planet
star
Pre-reading
There may be millions of “Solar Systems” in the universe
Do you think there will be a planet with life on it like the Earth
Let’s watch the video of the passage. And 2 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
While-reading
Let’s skim！
Let’s scan！
Read Paragraph 1 and answer the following questions:
1. Has there been life on the earth for hundreds of millions of years
Yes, there has.
2. Have we found life on any other planes yet
No, we haven’t yet.
The Earth is a planet and it _____________ the sun. Seven ____________ also go around the Sun. ___________them has an environment like the earth. So scientists haven’t _____life on them. The sun and its planets ____________ the solar system and our solar system is called the _______ or the Milky Way. There are __________ stars in the Galaxy and our sun is ____ one of them.
Read Paragraph 2 , and fill in the blanks.
goes around
other planets
None of
found
are called
Galaxy
billions of
only
Q: Which one is a star, the sun or the earth
The sun is a star and the earth is a planet.
Anyone out there
Scientists 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.
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.①
几亿年
绕太阳转
七颗其他行星
指代前面的environment
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.
1 There is more than one galaxy in the universe. □
2 The light from the stars in other galaxies has travelled for a long time to reach us. □
3 Spaceships have visited most of the universe. □
Read para 3~4, and check (√)the true sentences.
√
√
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 large is the universe It is impossible to imagine.
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.②
在宇宙中
It is +adj. + to do 做某事是……的
在太阳系外旅行
1 Scientists have received many messages from space. □
2 To the universe, scientists have many questions without answers. □
√
Read para 5, and check (√)the true sentences.
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.
与……交流
4 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.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.
solar system
none
environment
communicate
universe
Post-reading
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)
5 Look at the picture from a science story for children and answer the questions.
It has landed on Mars.
Writing
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)
It has discovered people on Mars.
Because they do not know how to send us a message.
Because they do not know how to visit us on the earth.
We have just received a message from our spaceship to Mars...
6 Write a passage to describe the picture.Use your answers to the questions in Activity 5 to help you.
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!
Key Phrases
几亿年 ______________________
绕太阳转 ______________________
七颗其他行星 ______________________
在宇宙中 ______________________
做某事是……的 ______________________
在太阳系外旅行 ______________________
与……交流 ______________________
hundreds of millions of years
go around the sun
seven other planets
in the universe
It is + adj. + to do sth.
travel outside the solar system
communicate with...
1. None of them has an environment like that of the earth, so scientists do not think they will find life on them.
none pron. 没有一人；没有一个；一点儿也没有
辨析：none 与no one
Language Points
None of us have/has seen the film.
我们中没有人看过这部电影。
No one has seen the film. 没有人看过这部电影。
—How many chairs are there in the room
房间里有多少椅子？
—None. 一把椅子也没有。
—Who helped you finish the report
谁帮你完成这个报告的？
—No one. I finished it by myself.
没有人，我自己完成的。
①none后可接of，none of作主语时，of 后接可数名词复数时，谓语动词用单复数均可；no one不接of，作主语谓语动词用单数。
②none既可指人，也可指物，常用于回答how many/much 引导的问句；no one只能指人，常用于回答who 引导的问句。
1. 面对危险，所有的消防员非常勇敢，他们没有一个人放弃。
In the face of danger, all the firefighters were brave and _____________ gave up.
2. 社会发展迅猛，接下来谁会站在科学的潮头，无人知晓。
We live in a such a fast developing society that ______________ who will take the lead in science next.
none of them
Instant Training
no one knows
返回
2. However, no spaceship has travelled far enough to reach other stars in our Galaxy.
形容词/副词 + enough to do表示“到达……程度，会发生某结果”。
He is old enough to go to school.
他到上学的年龄了。
He got up early enough to catch the first bus.
他起得很早，赶上了首班车。
【拓展】
too… to … 太……以至于不能……
(1) 当句子的主语和动词不定式的主语不是同一主语时，加for sb.，即 too... for sb. to do sth. “对于某人来说太……以至于不能……”
This box is too heavy for me to carry.
(2) 句子主语和不定式的宾语相同时，则宾语不能重复，必须省掉。
The water is too hot to drink.
(3) too...to结构可与enough to结构相互转换，不过要改为反义的形容词。
The box is too small to hold these things.
= The box isn’t big enough to hold these things.
(4) too... to结构与so... that 的否定句可以互换
The water is so hot that I can’t drink it.
= The water is too hot to drink.
拓展：enough to结构可与so... that结构互换。
The boy is strong enough to carry the bag.
= The boy is so strong that he can carry the bag.
1. The boy is so young that he can’t dress himself. ( 改为同义句)
The boy is ________ old ________ to dress himself.
The boy is ________ young ________ dress himself.
2.青少年应该有足够的勇气提出问题。
Teenagers should be________________ask questions.
not enough
返回
Instant Training
brave enough to
too to
一、单词拼写
1. I want to know how they ______________ (交流) in the past.
2. As we know, the sun gives out heat and______ (光亮).
3. You can’t imagine how large the _________ (宇宙) is.
4. A ______ (群) of people are waiting for the singer at the square.
5. We took some measures to protect the _______________ (环境).
communicated
light
universe
group
environment
Exercises
二、按要求完成句子
1. you, your, have ,finished, yet, work
__________________________________
2. it, to, finish, is, work, in, two, days, impossible, the
___________________________________________.
3. has, traveled, no, spaceship, far, other, enough, to, reach, stars
____________________________________________________.
4. been, earth, for, on, the, of, millions, life, there, has, years
________________________________________________.
Have you finished your work yet
It is impossible to finish the work in two days
No spaceship has traveled far enough to reach other stars
There has been life on the earth for millions of years
1. Passage:
Anyone out there
2. Key vocabulary:
group, light, impossible, take, out, communicate with, hundreds of millions of, go around, solar system, far enough to
3. Key structures:
① However, we have not found life on any other planets yet.
② Scientists have also discovered many other galaxies in the universe.
Summary
数字太空
收集有关太空的趣闻，每条趣闻中必须含有数字，如：Eight planets go around the sun。
将数字拼写出来（复习大数字的读法和写法)。
组成5人小组，组内评选，看谁收集的太空趣闻最有趣。
实践与拓展