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Module 3 Journey to space
Unit 2 We have not found life on any other planets yet.
词汇听写
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课文导入
How much do you know about other planets
课文呈现
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.
课文呈现
Learning to learn
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.
课文呈现
2. Read the passage and 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
________________________
Scientists think that there has been life on the earth for hundreds of millions of years. ① However, we have not found life on any other planets yet.
Anyone out there
温馨提示：此符号表示“考点精讲点拨”链接。
课文呈现
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. ② The sun and its planets are called the solar system, ③ 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.
课文呈现
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. ④
词汇赏析：阅读第2、3段，只要抓住几个关键词和短语就能很形象地理解太空中“行星——恒星——太阳系——银河系——宇宙”之间的大小或包含关系：1. planet（earth） 2.star（sun） 3. solar system 4. Galaxy 5. universe
课文呈现
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. ⑤
课文呈现
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 ⑥ We do not know the answers... yet.
句子赏析：文章最后一段通过三个问句质疑太空中是否有其他生命存在，这是科学家们尚未解开的谜题，说明科学探究永无止境，人类太空探索永远在路上。
课文呈现
体裁：说明文
段落之间的逻辑关系：层进结构
Para. 1: life on the earth
↓
Para. 2: the solar system
↓
Para. 3: other galaxies
↓
Para. 4: spaceships to Mars
↓
Para. 5: scientists’ questions
课文呈现
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.□
√
√
√
课文呈现
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.
solar system
none
environment
课文呈现
communicate environment none solar system universe
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
课文呈现
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.
课文呈现
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.
课文呈现
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...
,and we have discovered people. These people haven't sent us a message because they don't know how to send a message. They haven't visited us on earth because they don't know how to visit us. They have used part of the other spaceship from the earth to make TVs, radios and cars.
考点精讲
①Scientists 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
考点1
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
考点精讲
e.g. Every year hundreds of millions of Chinese people go back to their hometown for the Spring Festival.
每年都有数以亿计的中国人回到他们的家乡过春节。
There are two thousand students in this school.
这所学校有两千名学生。
考点精讲
考题1：[绥化] 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
【点拨】表示概数，用数词的复数形式+ of；表示确切的数量，用基数词+ 数词的单数形式。结合选项可知，two hundreds表达错误，故排除选项A 和B。
C
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温馨提示:可返回原文
考点精讲
②None of them has an environment like that of the earth, so scientists do not think they will find life on them.
none /n n/ pron. 没有一人；没有一个；一点儿也没有
考点2
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
考点精讲
考点精讲
e.g. None of us have/has seen the film. 我们中没有人看过这部电影。
The question was too difficult. No one could answer it.
那个问题太难了。没有人能回答上来。
No one knows about it. 没有人了解此事。
—How many people are there in the room 房间里有多少人？
—None. 一个人也没有。
—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。
考点精讲
考题2：[东营] —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
【点拨】词义辨析法。all 都；none 一个也没有；most 大部分；some 一些。根据“of them got wet” 及“Because it was not raining!”可知，因为没有下雨，所以这四个人都没有被淋湿。
B
考点精讲
environment / n'va r nm nt/ n. 环境
e.g. Everyone should protect the environment.
每个人都应该保护环境。
All countries are facing different kinds of environmental problems. 每个国家都面临着不同种类的环境问题。
environment n. 环境
environmental adj. （有关）环境的
environmentalist n. 环境保护论者
考点3
考点精讲
考题3：[武汉] 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
【点拨】词义辨析法。experience 经历；instruction 指示，命令；environment 环境；information 信息。由前面的Mengzi’s mother makes three moves 及常识可知，“孟母三迁”讲的是孟母为孟子提供好的学习环境的故事。
C
考点精讲
that / t/ pron. 那，那个
e.g. The population of Suihua is much smaller than that of Harbin. 绥化的人口比哈尔滨少得多。
These shoes are much more beautiful than those ones.
这些鞋比那些鞋要漂亮得多。
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。
考点4
考点精讲
考题4：[广元] —How cold here!
—Yes. The weather in Guangyuan is much colder than _______ in your hometown.
A. that B. it C. this D. those
【点拨】由 than 可知是前后两者相比较，“此天气”与“彼天气”相比，为了避免重复，后者用 that 来代替 weather。
A
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考点精讲
③ The sun and its planets are called the solar system...
一般现在时的被动语态
e.g. These great books are read by people all over the world today. 今天，这些伟大的著作被全世界人所阅读。
We can leave two hours earlier if the work is completed.
如果工作完成，我们可以提前两小时离开。
考点5
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。
考点精讲
考题5：[北京] On our farm, the tea leaves _____ by hand when they are ready.
A. pick B. picked
C. are picked D. were picked
【点拨】由句意可知，本句的主语the tea leaves 是动作pick的承受者，应用被动语态表达，排除A、B。本句叙述的是事实，应用一般现在时态。
C
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考点精讲
④ It is impossible to imagine.
impossible/ m'p s bl/ adj. (事情) 办不到的，不可能的
e.g. It is impossible for fish to walk. 鱼是不可能走路的。
It is impossible for me to climb such a high mountain.
我不可能爬上那么高的一座山。
考点6
表示“不可能的”时，impossible 的主语不能是人，而只能是it 或事情。
考点精讲
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。
考点精讲
考题6：[成都改编 ] 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
返回
考点精讲
⑤However, no spaceship has travelled far enough to reach other stars in our Galaxy.
enough / 'n f/ adv. 充分地；足够地
考点7
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。
考点精讲
e.g. Health depends on food, exercise and enough sleep.
健康取决于食物、锻炼和足够的睡眠。
The community worker is patient enough to explain to the old how to use Health Code。
这名社区工作者足够耐心地向老人们介绍如何使用健康码。
速记小法
enough 的用法口诀：
修饰名词很自由，可以置前也可后；
若是修饰形或副，后置一定要记住。
考点精讲
考题7：[重庆 A卷 ] 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
返回
考点精讲
⑥ Why has no one communicated with us
communicate /k 'mju n ke t/ v.(to exchange information, news, ideas, etc. with sb.) 沟通；交流；传递
e.g. We usually communicate by mobile phone.
我们通常通过手机联系。
Teenagers should communicate more with their parents and should be allowed to make their own decisions. 青少年应该多与他们的父母沟通交流并被允许自己做决定。
考点8
考点精讲
考题8：[永州] Mattew Chimudzi wants to study Chinese so that he can have a good ________________(communicate) with people in China one day.
communication
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课堂小结
本节课主要学习了有关太空知识的文章，掌握了知识点none, billion, enough, communicate的用法，并回答了与文章内容相关的问题，练习了书面表达。

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