Module 3 Unit 2 We have not found life on any other planets yet.课件+内嵌音频（外研版八年级下册）

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Module 3
Journey to space
Unit 2
We have not found life on any other planets yet.
New words
Words competition 1: Guessing game
universe
galaxy
solar system
light
environment
communicate
Words competition 2: Translate
在远方
太阳的
不可能的
系统
群组
环境
宇宙
交流
out
impossible
system
solar
universe
communicate
environment
group
星系
galaxy
没有一人
光线
light
none
那个
that
Words competition 3: Listen, read and translate
out
light
envirnment
none
system
group
solar
impossible
communicate
universe
that
galaxy
Words competition 4: Making sentences
1.
3.
2.
impossible
light
environment
It’s adj. to do sth.
.
.
Mars火星
Uranus天王星[ j r n s]
Neptune海王星[ neptju:n]
Jupiter木星 [ d u:p t (r)]
Saturn土星[ s t :n]
Mercury水星[ m :kj ri]
Venus金星[ vi n s]
Earth地球
地球
Earth
太阳系由内及外的第三颗行星
太阳系中直径、质量和密度最大的类地行星
现有45.5亿岁，有一个天然卫星——月球
地球表面积5.1亿平方千米，其中71%为海洋，29%为陆地
地球的卫星—月球
地球唯一的天然卫星
月球是太阳系中体积第五大的卫星
平均半径约为1737.10千米，相当于地球半径的0.273倍
月球与地球的平均距离约38.44万千米，大约是地球直径的30倍。
月球的年龄大约有46亿年。
月球有壳、幔、核等分层结构。
The moon is a satellite of the earth.
[mu:n] 月球
[ :θ] 地球
火星Mars
太阳系中仅次于水星的第二小的行星
火星上有太阳系已知最大的山奥林帕斯山，最大的峡谷水手号峡谷。
质量（地球质量=1）：0.1074
火星有两个天然卫星：火卫一和火卫二
Activity 1: Watch and think
Are you proud of China
What do you know about
space exploration
太空探索
Activity 2: Read the passage and choose the best title for it
Anyone out there 2.Life on the earth
3. The sun and other stars 4. The stars at night
1. Anyone out there
Activity 2-Task 1: Match the paragraphs with the ain ideas
Para. 1 A. Scientists questions about life in the universe.
Para. 2 B. The solar sysem and the MilkWay.
Para. 3 C. Life on the earth but not on any other planets.
Para. 4 D. Spaceship to Mars and outside the solar system.
Para. 5 E. Many other galaxies in the universe.
Activity 2-Task 2: Read Para. 1-2 and choose
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.
(1) there be 句型表示“在某地有某物或某人”
there be 句型的现在完成时即把“be动词”写成现在完成时结构，即：there have/has been
(2)hundreds of millions of 数亿……
We paid hundreds of millions of dollars in taxes.
我们交纳了数亿美元的税金。
Activity 2-Task 2: Read Para. 1-2 and choose
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.
go around 绕着....转
Activity 2-Task 2: Read Para. 1-2 and choose
none 表示（三个以上）一个也没有，none作主语时，谓语的单复数形式要根据实际情况来定。如：
None of them has been to Beijing.
他们中没有一个人到过北京。
（none指代可数名词， 强调单一性，谓语用单数形式）
None of them were aware of the danger.
他们都没有意识到危险。
（none指代可数名词，强调整体性，谓语用复数形式）
None of the money is his.
这些钱没有他的份儿。
（none指代不可数名词，谓语动词用单数形式）
Activity 2-Task 2: Read Para. 1-2 and choose
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. be called 被称为...
2. a part of... ...的一部分
3. 这里的the Galaxy专指“银河系”，也可以 称作the Milky Way。而galaxy则泛指“星系”。
Activity 2-Task 2: Read Para. 1-2 and choose
1. Have we found life on any other planets yet
A. Yes, we have. B. No, we haven’t.
2. How many planets are there in the solar system
A. Seven. B. Eight.
3. Why don’t scientists think they will find life on other planets
A. Because of the environment.
B. Because of the science and technonlogy is not good enough.
Activity 2-Task 2: Read Para. 3 and 4, check what have we done
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.
1. far away 远离
2. for+一段时间
3. It’s + adj. to do sth. 做某事是......的
Activity 2-Task 2: Read Para. 3 and 4, check what have we done
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.
1. outside 在外面
2. adj./adv. enough to do sth. 到达……程度，会发生某结果
Activity 2-Task 3: Read Para. 3 and 4, check what have we done
We have...
discover other galaxies
send astronauts to the Mars
send astronauts to the Mars
send spaceships to travel outside the solar system
Activity 2-Task 4: Read Para.5 and complete
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.
1. alone表示独自一人；lonely表示心灵上的孤单。
2. communicate with sb. 和某人交流
Activity 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. □
Activity 4: Complete the passage
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
THANKS