外研版 八下Module 3 Journey to space Unit 2 We have not found life on any other planets yet第二课时（35张 ）

(共36张PPT)
U2 We have not found life on any other planets yet.
Module 3 Journey to space
短语句子复习
背短语和句子
默写短语和句子
新授课
短语讲解
重难句讲解
3.习题练习
1. hundreds of millions of years
2. on any other planets
3. go around
4. none of
5. the solar system
6. many other galaxies
7. far away
8. It’s impossible to imagine
9. send… to…
10. far enough
11. Communicate with
1. 亿万年
2. 在其它的行星上
3. 围着……转
4. 没有一个（三者或三者以上）
5. 太阳系
6. 许多其他的星系
7. 遥远
8. 这是不可以想象的
9. 把……发送到……
10. 足够的远
11. 与……沟通
默写
1. 亿万年
2. 在其它的行星上
3. 围着……转
4. 没有一个（三者或三者以上）
5. 太阳系
6. 许多其他的星系
7. 遥远
8. 这是不可以想象的
9. 把……发送到……
10. 足够的远
11. 与……沟通
背熟下列句子
默写
写出下列句子
(1)当主句的谓语动词是think, believe, suppose(猜测，认为)等，而主句的主语又是第一人称时，后面宾语从句的否定词常要前移，即否定主句的谓语动词。我们称这类现象为“否定转移（前移）”。如：
We don’t think Tom is right.我们认为Tom是不对的。
(2)从句中使用了there be句型的现在完成时，其结构为；There have/has been...
如：Has there been an accident?有过一次事故吗？
1. Scientists think that there has been life on the earth for hundreds of millions of years.
科学家们认为地球上的生命已经有上亿年的历史。
(3) hundreds of意为“数以百计的”，用来表示一个不具体的数量或一个夸张的说法。hundred意思是“百”，当它和具体的数词连用时，hundred不能用复数形式，也不能在其后加of。类似的词还有thousand, million, billion 等。如：
eg. There are about two hundred students on the playground.
操场上大约有两百个学生。
There are hundreds of students on the playground.操场上有数百个学生。
We planted _____ trees last year.
A. hundreds of B. hundred of
C. five hundreds D. five hundred of
yet 用于否定句和疑问句句末，意思是“还，尚”。not … yet 的意思是“还没，尚未”，表示某事物在某一时间尚未发生，但未来也许会发生。例如：
I haven’t learnt any farther information yet.
我还没有得到进一步的信息。
Have you received her letter yet?
你收到她的来信了吗？
2.However, we have not found life on any other planets yet.
然而，我们还没有在任何其他行星上发现生命。

none用于表示对三者或三者以上全部否定，既可指人，也可指物,其后常接“of + 名词 / 代词”，作主语时，谓语可以是单数，也可以是复数; none的反义词是all, none可与of连用; eg. None of the children speaks English.
这些孩子没有一个人讲英语。
— I’m hungry. Is there any bread in the fridge?
— _____, but we have cakes. Would you like to have one?
A. Some B. Much C. None D. Nothing
3. 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。
【用法辨析】none与no one的区别
none 既可以指人, 也可以指物, 一般用来回答how many/much引导的特殊疑问句。例如:
—How many birds are there in the tree?
——树上有几只鸟?
—None.
——一只也没有。
no one 相当于nobody, 常用来指人, 作主语时谓语动词要用单数形式; 不可以与of连用; 一般用来回答who引导的特殊疑问句。例如:
—Who is in the room at the moment?
——此时谁在房间里?
—No one/Nobody.
——没人。
None of us are/is interested in the story.
我们没有人对那个故事感兴趣。
—Who are you speaking to?
——你在跟谁讲话？
—No one. ——没人。
—How many students are there in the room?
——房间里有多少个学生?
—None.——一个也没有。
None of us has / have been to Sanya.
我们都没去过三亚。
are called是一般现在时的被动语态，意为“被称为，被叫作”。如：
The cartoon is called The Smurfs.这部卡通片叫《蓝精灵》。
4.The sun and its planets are called the solar system... 太阳和它的行星被叫作太阳系，……
本句属于“It’is+adj.+ (for sb.+) to do sth.”的句式，其中to do sth.是真正的主语，it只是形式主语。如：
It is important to learn about safety knowledge.
学习安全知识是很重要的。
本句中的impossible是形容词，意为“不可能的”。
eg：It is impossible to live on the moon.
在月球上生活是不可能的。
It is difficult to read these words.
读这些单词很难。
5. So how large is the universe? It’s impossible to imagine.
所以宇宙有多大？它是不可能想象到的。
形容词或副词+enough to+动词原形，意为“足够……可以……”;enough+名词
eg.He is old enough to take care of himself.
他大了，能照顾自己了。
We have enough water.
我们有足够的水。
6. However, no spaceship has travelled far enough to reach other stars in our Galaxy.
然而，没有宇宙飞船能遨游到足够远，到达我们星系中的其他恒星上。

（1）这里with so many stars in the universe是介词短语，在句中作状语。类似的例子还有：

With so many things to do, we have no time to play.
要做的事情这么多，我们都没时间玩了。
The woman stood there with her hands in the pockets.
那个女士站在那里，手插在口袋里。
7. With so many stars in the universe, are we alone, or is there life out there in space?
宇宙中有这么多星球，我们是孤独的吗？抑或太空中还有其他生命存在呢？
— Why do you always sleep ______?
— Because I’m afraid of the dark.
A. by yourself B. with the door open
C. with the window open D. with the light on
(2)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。
②lonely只作为形容词，意为“孤独的，寂寞
eg. He lives alone ,but he isn’t lonely.
他一个
（1）no one表示“没有人”，作主语时，谓语动词常用单数形式。如：
We rang several times, but no one answered.
我们按了几次铃，但没有人来开门。
（2） communicated with sb. 和某人交流
We can communicate with each other by phone.
我们可以通过电话联系。
8. Why has no one communicated with us?
为什么没有人和我们联系呢？
一. 用already, yet, just, ever或never完成下列句子。
1. I have ______ done the heavy work
and now I feel very tired.
2. — Mary, have you read any books about Mars?
— No, I have ______ read a word
about it.
3. — Have you ______ been to the Great Wall in China, Vicky?
— Of course, I have.
4. Don’t worry. We have _______ helped you sweep the classroom.
5. — Have you done your work _____?
— Sorry, but I will finish it in one hour.
一. 用already, yet, just, ever或never完成下列句子。
1. I have ______ done the heavy work
and now I feel very tired.
2. — Mary, have you read any books about Mars?
— No, I have ______ read a word
about it.
3. — Have you ______ been to the Great Wall in China, Vicky?
— Of course, I have.
4. Don’t worry. We have _______ helped you sweep the classroom.
5. — Have you done your work _____?
— Sorry, but I will finish it in one hour.
just
never
ever
already
yet
　　Astronauts have (1) ________ been to the moon but they have not been to any other planets. However, a spaceship has (2) _______ arrived on Mars and it has (3) _______ sent back photos of the red planet. Is there life on Mars? We do not know (4) _____.
二. Complete the news with already, just and yet.
Spaceship on Mars!
　　Astronauts have (1) ________ been to the moon but they have not been to any other planets. However, a spaceship has (2) _______ arrived on Mars and it has (3) _______ sent back photos of the red planet. Is there life on Mars? We do not know (4) _____.
二.Complete the news with already, just and yet.
already
just
already
yet
Spaceship on Mars!
三、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）
4. I think he will come to your birthday party.（改为否定句）
I ______ ______ ____ _____ come to your birthday party.
5. So far, I learned more than 1,000 new words.（改错）

三、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）
4. I think he will come to your birthday party.（改为否定句）
I ______ ______ ____ _____ come to your birthday party.
5. So far, I learned more than 1,000 new words.（改错）
learned改为have learned
Have you been to America before?
I have not finished my homework.
has been to
don’t
think
he
will
四. 下列各句中均有一处错误，请指出并改正。
1. My mother isn’t in. She has been to the supermarket.
_________________________________　　　　　　　　　　　　　　　　
2. Football is so exciting that million of
people in the world play it.
_________________________________　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
3. That is very hard to reach the apples on the tree.
_________________________________　　　　　　　　　　　　　　　
四. 下列各句中均有一处错误，请指出并改正。
1. My mother isn’t in. She has been to the supermarket.
_________________________________　　　　　　　　　　　　　　　　
2. Football is so exciting that million of
people in the world play it.
_________________________________　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
3. That is very hard to reach the apples on the tree.
_________________________________　　　　　　　　　　　　　　　
gone
millions
It
五. 单项选择
1. The earth goes　　　the sun.
A. around B. to C. for D. with
2. Although Tony lives　　　, he doesn’t feel　　　.
A. alone; alone B. alone; lonely
C. lonely; lonely D. lonely; alone
3. There were two rows of white houses　　　trees in front of them.
of B. with C. in D. for
4. Did you know that the earth is home to　　　animals?
A. millions B. million of
C. millions of D. a million of
5. The students come from many different countries but
　　　of them comes from Africa.
A. no one B. nobody
C. nothing D. none
五. 单项选择
1. The earth goes　　　the sun.
A. around B. to C. for D. with
2. Although Tony lives　　　, he doesn’t feel　　　.
A. alone; alone B. alone; lonely
C. lonely; lonely D. lonely; alone
3. There were two rows of white houses　　　trees in front of them.
of B. with C. in D. for
4. Did you know that the earth is home to　　　animals?
A. millions B. million of
C. millions of D. a million of
5. The students come from many different countries but
　　　of them comes from Africa.
A. no one B. nobody
C. nothing D. none
Dear Li Fang :
　　I’ve (1)_______ finished reading a great book at school. I haven’t (2) ________ anything as good as that for a long time! It’s a story about the solar system. In the book, the writer imagines that astronauts have (3) ________to Mars. I’ve(4)_________ thought about that before and I think it’s very interesting.
　I haven’t (5) ______ anyone famous in my life but I hope one day I can meet an astronaut. I’ve (6) ________ to a Chinese astronaut for more information about space and his experience of space travel. I hope he will write back. He hasn’t (7)_____ . Maybe he is too busy. I’m still waiting.
　　Best wishes,
　　Liu Dan
六· Complete the email with the words in the box.
been just met never read written yet
Dear Li Fang :
　　I’ve (1)_______ finished reading a great book at school. I haven’t (2) ________ anything as good as that for a long time! It’s a story about the solar system. In the book, the writer imagines that astronauts have (3) ________to Mars. I’ve(4)_________ thought about that before and I think it’s very interesting.
　I haven’t (5) ______ anyone famous in my life but I hope one day I can meet an astronaut. I’ve (6) ________ to a Chinese astronaut for more information about space and his experience of space travel. I hope he will write back. He hasn’t (7)_____ . Maybe he is too busy. I’m still waiting.
　　Best wishes,
　　Liu Dan
六 Complete the email with the words in the box.
been just met never read written yet
just
read
been
never
met
written
yet
七. 完成句子
1. 今年迄今为止雨水已经太多了。
______ ______ ______ too much rain so far this year.
2. 我们还没有收到过来自太空的信息。
We ________ ________ messages from space ______.
3. 大毛跑得足够快, 可以追上其他人。
Damao is running ______ ______ ______ catch up with others.
4. 和小吉姆交流很困难。他总是有许多奇怪的想法。
______ very difficult to ____________ ________ little Jim. He always has many strange ideas.
5. 大峡谷有多大? 这很难说。
______ ______ is the Grand Canyon? It’s hard to say.
七. 完成句子
1. 今年迄今为止雨水已经太多了。
______ ______ ______ too much rain so far this year.
2. 我们还没有收到过来自太空的信息。
We ________ ________ messages from space ______.
3. 大毛跑得足够快, 可以追上其他人。
Damao is running ______ ______ ______ catch up with others.
4. 和小吉姆交流很困难。他总是有许多奇怪的想法。
______ very difficult to ____________ ________ little Jim. He always has many strange ideas.
5. 大峡谷有多大? 这很难说。
______ ______ is the Grand Canyon? It’s hard to say.
There
has
been
haven’t
received
yet
fast
enough
to
It’s
communicate
with
How
large
6. 大卫刚刚写完他的作业。
David ______ ______ ________ __________ his homework.
7. 王彤和她妈妈已经去过长城了。
Wang Tong and her mother ______ __________ ______ to the Great Wall.
8. 但是我听说张先生去杭州出差了。
But I hear Mr. Zhang ______ ______ to Hangzhou on business.
9. 我还没有弹过钢琴。
I ________ ________ the piano ______.
10. 那就是你在白天看不到星星的原因。
________ ______ you can’t see the stars at daytime.
11. 学生们手捧鲜花，走向他们的老师。
The students walked to their teachers, ______ flowers _____their hands.
6. 大卫刚刚写完他的作业。
David ______ ______ ________ __________ his homework.
7. 王彤和她妈妈已经去过长城了。
Wang Tong and her mother ______ __________ ______ to the Great Wall.
8. 但是我听说张先生去杭州出差了。
But I hear Mr. Zhang ______ ______ to Hangzhou on business.
9. 我还没有弹过钢琴。
I ________ ________ the piano ______.
10. 那就是你在白天看不到星星的原因。
________ ______ you can’t see the stars at daytime.
11. 学生们手捧鲜花，走向他们的老师。
The students walked to their teachers, ______ flowers _____their hands.
has just finished doing
have already been
has gone
haven’t played yet
That’s why
with in
Homework
1.记住第三模块讲过的语言点的用法，短语、句子背过默写一遍（1英1汉）
2.用红笔核对8下模块二答案