Module 3 Journey to space Unit 2 课件(共44张PPT，内嵌音视频)--2023-2024学年外研版八年级英语下册

(共44张PPT，内嵌音视频)
Module 3 Journey to space
Unit 2 We have not found life on any other planets yet.
How many planets are there in the universe
2. Is there any life on other planets
Think and share
Reading and vocabulary
1 Work in pairs. Look at the picture and talk about what you know about Chinese spaceships.
Shenzhou-9 is a manned spaceship.
Who were on the spaceship
Jing Haipeng, Liu Wang and Liu Yang.
When did it land on the space
On June 16, 2012.
___________________
Scientists think that there has been life on earth for hundreds of millions of years. However, we have not found life on any other planets yet.
2 Read the passage and choose the best title for it.
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.
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.
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.
When you read a passage with a title and
pictures, think about the words you may
find in the passage, and the questions you
may want to ask before you start to read.
Learning to learn
1. Anyone out there
2. Life on Earth
3. The sun and other stars
4. The stars at night
Read the passage and choose the best title for it.
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 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
none
environment
communicate environment none
solar system universe
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.
communicate
universe
Writing
5 Look 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)
It has discovered people on Mars.
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.
3. Why have the people on Mars not sent us a
message (do not know how to)
They do not know how to send us a message.
6 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 …
Scientists think that there has been life on the earth for hundreds of millions of years.
hundreds of millions of 数亿的；数以亿计的
当hundred, thousand, million, billion 前有具体数字修饰时，这些词后不加-s。
hundreds of 数以百计的
thousands of 数以千计的
millions of 数以百万计的
billions of 数以十亿计的
【活学活用】
There are ______ paintings on exhibition（展览）. ______
works were created by young artists.
A. two hundred; Two hundreds
B. two hundreds; Hundreds of
C. hundreds of; Two hundred
C
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
【注意】none 表示“ 三者或三者以上的人或物都不”，其反义词是all； neither 表示“两者都不”，其反义词是both。
none ①既可指人，也可指物；
②其后可接 of；
③常用于回答 how many/much 引导的问句。
no one ①只能指人（=nobody）；
②其后不能接 of；
③作主语时，谓语动词用单数形式；
④常用于回答 who 引导的特殊疑问句。
【辨析】none 与no one
【活学活用】
—Four children were walking under a small umbrella.
_____of them got wet. Can you guess why
—Because it was not raining!
A. All B. None C. Most D. Some
B
environment n. 环境
environment n. 环境
environmental adj. （有关）环境的
environmentalist n. 环境保护论者
None of them has an environment like that of the earth, so scientists do not think they will find life on them.
【活学活用】
The idiom（成语）“Mengzi’s mother makes three moves”
tells of a mother who did all she could to provide the best
_____ for her child.
A. experience B. instruction
C. environment D. information
C
that pron. 那，那个
that 用来特指前文提到的单个事物或不可数名词；特指前文提及的多个事物时用those。
None of them has an environment like that of the earth, so scientists do not think they will find life on them.
【活学活用】
—How cold here!
—Yes. The weather in Guangyuan is
much colder than_______ in your
hometown.
A. that B. it
C. this D. those
A
The sun and its planets are called the solar system...
一般现在时的被动语态
一般现在时被动语态的构成是：
be(am/is/are)+ 及物动词的过去分词。
被动语态中常用 by 引出执行动作的人或物。
【活学活用】
On our farm, the tea leaves _____ by hand when
they are ready.
A. pick B. picked
C. are picked D. were picked
C
It is impossible to imagine.
impossible adj. (事情) 办不到的，不可能的
表示“不可能的”时，impossible 的主语不能是人，而只能是it 或事情。
possibly adv. 可能；或许
↑
possible adj. 可能的
↓
impossible adj. 不可能的
It is impossible (for sb.)to do sth.
（对某人来说）做某事是不可能的。
【活学活用】
用所给词的适当形式填空
These animals were able to break away from the rope
whenever they wanted, but it was only because over time,
they believed that it was just _____________（possible）.
impossible
However, no spaceship has travelled far enough to reach other stars in our Galaxy.
enough adv. 充分地；足够地
adj. /adv. +enough
enough+n. 或 n. +enough
“...not + adj. + enough +to do sth.”常和 “too... to...”以及“so...that+ 否定形式的从句”互换。
【活学活用】
那位 62 岁的女士足够勇敢 , 从湖里救起了一位小伙子
（完成译句）
The 62-year-old lady was brave _________ ________ save a
young man in the lake.
enough to
Why has no one communicated with us
communicate v.(to exchange information, news, ideas, etc. with sb.) 沟通；交流；传递
【活学活用】
Mattew Chimudzi wants to study Chinese so that he can
have a good ________________(communicate) with people
in China one day.
communication
从方框中选词并用其适当形式填空。
communicate, system, environment, light, out
1. The ________ in this room is very poor.
2. Molly is ________on the playground at the moment.
light
out
3. Many young people often find it important
_______________, but don’t know who to talk to.
4. As a mother, she always tries hard enough to give her child a proper _____________ .
5. Cities like Shanghai， Chongqing and Beijing have their own waste sorting（垃圾分类）__________ .
to communicate
environment
systems　
communicate, system, environment, light, out
根据汉语意思完成句子（每空一词）。
1. 此刻数十亿颗星星都在看着我们呢。
At the moment ______ _______ stars are looking at us.
2. 他真的很想知道什么是太阳系。
He really wants to know what the _______ ______ is.
3. 一群学生正在爬山。
_____ _______ ______students are climbing the hill.
billions
of
solar
system
A
group
of
4. 在宇宙中有太阳、地球、月球和很多其他的恒星。
There is the sun， the earth， the moon, and many other stars _____ ______ ________ .
5.我们都知道，地球绕着太阳转。
As we all know, the earth _____ _________ the sun.
in
the
universe
goes
around