Unit 4 Topic 3 China is the third nation that sent a person into space.Section C 精品课件+嵌入音频 (共38张PPT

(共38张PPT)
Unit 4 Amazing Science
Section C
Topic 3 China is the third nation
that sent a person into space.
Review
( ) 1. Thanks for _____ me to your birthday party.
A. invite B. invitation C. invites D. inviting
( ) 2. —Liu Hua studies hard at English recently.
—Yes. He’s made up his mind _____ his English.
A. improve B. improved C. improving D. to improve
3. It’s important __________ (master) computer technology.
4. So I advise you __________ (discover) new ways __________ (make) computers serve us better.
5. We need four more people to finish the work. （改为同义句）
We need ______ ______ people to finish the work.
D
D
to master
to discover
to make
another four
Have you seen the film _________ is called Kungfu Panda This film mainly tells us a story __________ happened in ancient China. One of the main characters in it is a panda _________ is very fat but cute. He has quite a few friends _________ helped him struggle to bring peace back to the land. Many people _________ have seen the film like it very much.
Review: complete the passage with that, which or who.
that/which
that/which
that/which
that/who
that/who
Pre-reading
New words
/,ent te nm nt/
n. 娱乐；招待
entertainment
doubt
no doubt
tiny
inside
/da t/
n./v. 怀疑，疑惑
无疑地
/ ta n /
adj. 极小的，微小的
/, n sa d/
prep. 在......里 adv. 在里面
New words
cancel
/ n :m li/
adv. 通常，
正常情况下
/bre n/
n. 脑；智力；脑力
normally
brain
workplace
/ k nsl/
v. 取消，撤销；废止
/ w :kple s/
n. 工作场所
New words
properly
/k nekt/
v. 连接；
把......联系起来
/b sa dz/
adv. 而且，再说
prep. 除......之外（还）
connect
for instance
besides
例如
= for example
/ pr p li/
adv. 正确地，恰当地
While-reading
What are the computers used for
1a 1. Tick the fields we use the computer in.
education business
industry communication
daily life medical care
entertainment sports
1a 2. Can you give an example of the use of
the computer in one of the fields above
In factories
In space
In business
In the hospital
1b 1. Underline the topic sentence of each paragraph.
Fast reading
Para 1:
Para 2:
Para 3:
Since computers were invented in the USA in the 1950s,
they have become very important in many areas of work and leisure.
Since the Internet came into being, people’s lives at home have been changed, too.
Computers have improved our lives, but they have brought problems, too.
1b 2. Complete the following diagram.
computers
usage
problem
work
daily life
______________________________ of a spaceship.
help doctors ______________________.
____________________ in factories.
help businessmen ________________________.
get headaches or ____________.
don’t have enough time __________________.
something on the Internet is not _____________.
play games and _______________.
______________ and _____________ at home.
________________ by sending e-mails and _________________.
control the speed and direction
find diseases easily
control the robots
place and cancel orders
watch movies
do shopping
do business
chatting online
communicate
sore eyes
to study or exercise
true or good
Careful reading
1a Read and understand.
Paragraph 1
Read para.1 and fill in the following table.
Place The usage of computers
In space
In hospitals
In factories
In business
control the speed and direction
find diseases easily and solve other problems
do dangerous work
used to place and cancel orders
Careful reading
Paragraph 1
Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure. There is no doubt that computers are very useful in technology and business.
1a Read and understand.
since + 一般过去时态的句子/过去的时间点/一段时间 + ago，
用于现在完成时态之中，且这个现在完成时态的句子中的谓语动词要用延续性动词。
eg. He has lived here since 1999.
He has been away from Chongqing since 10 years ago.
1. There is no doubt that computers are very useful in
technology and business.毫无疑问电脑在技术和贸易业都非常有用。
考点：
there’s no doubt + that 从句 “毫无疑问”
eg. There’s no doubt that he’s an honest man.
(1)doubt (n.)
(2)doubt (vt.)+ 从句
(3)doubt (vi.)+ about / of
Language points
There is no doubt that we will be successful.
Doubt is the key to knowledge.
doubt /da t/
n./v. 怀疑，疑惑
I don't doubt that they will be able to solve the problems.
I doubt whether/if he'll change his mind.
eg. There is no reason to doubt of his honesty.
Careful reading
Paragraph 1
In space, computers have been used to
control the speed and direction of a spaceship.
1a Read and understand.
With the help of computers, doctors can find diseases easily and solve other problems.
For example , tiny computers which are inside patients’ bodies can keep their hearts beating normally.
tiny very small in size adj. 极小的，微小的
64英寸 超大型（Huge）
32英寸 大型（Large）
16英寸 中型（Medium）
8英寸 小型（Small）
4英寸 超小型（Tiny）
2. In space, computers have been used to control the speed and direction of a spaceship.
在太空，电脑已经被使用来控制宇宙飞船的速度及方向。
考点：
现在完成时态结构：主语 + have/has + done +其他；
现在完成时的被动语态：主语 + have/has been + done +其他。
eg. We have planted many trees on the mountain.
= Many trees have been planted on the mountain by us.
及时练习：（将下列句子改为被动语态）
1. Scinetists have launched spaceships to explore the outer space.
Spaceships _____ _____ ______ to explore the outer space.
2. We have planted many trees so far.
Many trees _____ _____ ______ by us so far.
Language points
have been launched
have been planted
3. For example , tiny computers which are inside patients’ bodies can
keep their hearts beating normally.
举个例子，病人体内所安放的微型电脑能让他们的心脏正常跳动。
考点：
（1）此句是由which引导的定语从句，来修饰computers，类似的句子还有：In factories,robots are controlled by computers that are like human brains./ They can do work that is dangerous to humans.
（2）keep doing sth. “一直做某事”
keep sb. doing sth. “让某人一直做某事”
eg. Don’t keep him wating so long.
（3）keep + adj. / keep sb./sth. + adj.
eg. keep happy/quiet; keep your hands clean
Language points
1. I am sorry to keep you _____ so long.
A. waiting B. to wait C. to waiting D. wait
2. The new shop keeps _____ for 24 hours a day.
A. opening B. to opening C. open D. to open
3. He _____ the room by his boss for a long time.
A. is kept cleaning B. keep cleaning
C. is kept to clean D. kept clean
4. We must always keep our classroom _____.
A. cleaning B. to clean C. clean D. cleans
A
及时练习：
C
A
C
Careful reading
Paragraph 1
In factories, robots are controlled by computers
that are like human brains. They can do work
that is dangerous to humans.
1a Read and understand.
In business, computers are used
to place and cancel orders. They are also making the workplace safer and better.
定语从句
下订单和取消订单
Paragraph 2
Since the Internet came into being, people’s lives at home have been changed, too. More and more people have personal computers that are used to play games and watch movies. Thanks to the Internet, people can do shopping and do business at home. Instead of writing letters on paper, people communicate by sending e-mails and chatting online. The whole world is connected. The Internet is making the world smaller, like a village.
1a Read and understand.
Careful reading
Paragraph 2
1a Read and understand.
Since the Internet came into being, people’s lives at home have been changed, too. More and more people have personal computers that are used to play games and watch movies. Thanks to the Internet, people can do shopping and do business at home. Instead of writing letters on paper, people communicate by sending e-mails and chatting online. The whole world is connected. The Internet is making the world smaller, like a village.
connect v. 连接
connection n. 关系，联系
1. connect A with B 使A与B连接
2. connect sth. (to sth.) 使电、气、水等接通
3. connect sb./sth. (with sb./sth.) 与……有联系，把……联系起来
4. Instead of writing letters on paper, people communicate by sending
e-mails and chatting online.
人们通过发送电子邮件，或者在网上交流，而不是在纸上写信。
考点：
（1）instead 表示前面的事没做，反而做了后面的事。
eg. He didn’t go to bed. Instead, he watched TV for a long time.
（2）instead of sth./doing sth. “没有/代替做某事”。
eg. He watched TV for a long time instead of going to bed.
及时练习：（将下列句子改为同义句）
1. He didn’t answer my question. Instead, he aked some questions.
He _____ me some questions _____ ____ ________ my question.
2. He went to Japan on vacation instead of going to England.
He _____ ____ to England. ________, he went to Japan.
Language points
asked instead of anwering
didn’t go Instead
Paragraph 3
1a Read and understand.
Computers have improved our lives, but they have brought problems, too. For instance, if we work on computers too long, we may get headaches or sore eyes. If we play computer games too much, we won’t have enough time to study or exercise. Besides, not everything we read on the Internet is true or good for puters help us at work and at home, but they must be used properly.
Careful reading
Paragraph 3
1a Read and understand.
Computers have improved our lives, but they have brought problems, too. For instance, if we work on computers too long, we may get headaches or sore eyes. If we play computer games too much, we won’t have enough time to study or exercise. Besides, not everything we read on the Internet is true or good for puters help us at work and at home, but they must be used properly.
for instance = for example “例如”
用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。
such as 用来列举事物时，一般列举同类人或事物中的几个例子。eg.
（1）For instance (For example), Japan has a lot of earthquakes.
（2）I like fruits, such as apples, pears and bananas.
定语从句
5. Besides, not everything we read on the Internet is true or good for us.
此外，并不是所有我们在网上读到的信息都是真实或对我们有益的。
考点：
（1）辨析：besides, except 与 beside
①besides 意为“（包括......在内）除此之外”。
②except 意为“除了（不包括......在内）”。
③beside 意为“在......旁边”，相当于next to 和near。
（2）not everything 意为“不是每件事”。这是一个表示“部分否定”的句子。完全否定为
Nothing we read on the Internet is true or good for us.或
None of the things we read on the Internet is true or good for us.
Language points
1. ________ （除了）English, we learn math, Chinese, politics and
some other subjects.
2. He didn’t become a teacher. Instead, he became a doctor.
（改为同义句）
He became a doctor ______ ____ a teacher.
Besides
及时练习：
instead of
Watch and follow.
Post-reading
Find out these phrases from the text.
in the 1950s
there’s no doubt +that从句
with the help of sb. = with one’s help
keep doing sth.
1.在20世纪50年代
2.毫无疑问
3.在某人的帮助下
4.一直做某事
让某人一直做某事
5.出现
6.多亏了某人
7.而不是做某事
8.举例
9.太多（+不可数名词）
太
keep sb. doing sth.
come into being
thanks to sb.
instead of doing sth.
for instance = for example
too much + 不可数名词
much too + adj./adv.
Find out these phrases from the text.
adj./adv. + enough to do sth.
make sb. do sth.
make sb. + adj.
turn on/turn off
10.足够......做某事
11.让某人做某事
使某人......
12.打开/关掉/
开大声点/关小声点
13.像往常一样
14.没有（三者及以上）
15.换掉
16.在世界上
17.事实证明......
turn up/turn down
as usual
none of them
break down
in the world
it proves + that从句
2 Write a short passage with the title One Day Without Computers.
The following information may help you.
Suppose you were on a special day in 2030. During the day, there were no computers in the world. What trouble would you have
You may begin like this:
One Day Without Computers
Today, when I got up, I just turned on the computer as usual, but it didn’t work. Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today…
One Day Without Computers
Today, when I got up, I just turned on the computer as usual, but it didn’t work.
Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today. So the world is quite different. For instance, we can’t play games, watch movies or do shopping at home. Besides, we can’t
communicate by sending e-mails or chatting online. Without the help of computers, businessmen can’t place or cancel orders online. Teachers can’t give lessons to their students. What’s worse, robots controlled by computers can’t do dangerous work for humans. Even the doctors can’t find the diseases easily.
In short, we almost have trouble with everything without computers today.
You can write it like this:
Exercises
properly, besides, brought, get, enough
Computers have improved our lives, but they have _______problems, too. For instance, if we work on computers too long, we may _____ headaches or sore eyes. If we play computer games too much, we won’t have ______ time to study or exercise. ______ , not everything we read on the Internet is true or good for puters help us at work and at home, but they must be used _________.
brought
get
enough
Besides
properly
summary
We learn: 1. Some words: doubt, tiny, inside, brain,
cancel, connect
2. Some phrases: no doubt, for instance
3. Some sentences:
(1) There is no doubt that computers are very
useful in technology and business.
(2) Computers help us at work and at home, but
they must be used properly.
We can: 1. Talk about the importance of computers.
2. Write a composition by using our imagination.
Homework
Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section C in your workbook.
Preview Section D.
Write a short passage with the title One Day Without Computers.
Thank you!