仁爱科普版九上英语Topic 3 China is the third nation that sent a person into space. Section C 课件(共20张PPT)

(共20张PPT)
Unit 4 Amazing Science
Topic 3 China is the third nation that sent a person into space.
Section C
Watch a video about series of spaceship.
1.Tick the fields we use the computer in.
education business
industry communication
daily life medical care
entertainment sports
2.Can you give an example of the use of computers in one of these fields
1a
fast-reading
　
Read 1a and find out the topic sentence of the passage .
( When you want to know the topic sentence of the passage, you must pay attention to the first paragraph and the last paragragh.)
Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure.
fast-reading
　
Read 1a and find out the topic sentence of each paragraph.
( When you want to know the topic sentence of each paragraph, you must pay attention to the first sentence and the last sentence.)
Paragraph 1:
Paragraph 2:
Paragraph 3:
There is no doubt that computers are very useful in technology and business.
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.
computers
usage
work
____________________________________ of a spaceship.
help doctors __________________________.
_________________________ in factories.
help businessmen _____________________.
Help astronauts control the speed and direction
find diseases easily and solve other problems.
help robots do dangerous work
place and cancel orders
Careful-reading
Task 1
What can computers do for us in different fields
1 . Read the paragraph 1 and answer the following question .
2.Find out some difficult sentences ,according to Paragraph 1.
（1）.There is no doubt that computers are very useful in technology and business.
(3).In business, computers are used to place and cancel orders.
Careful-reading
Task 1
There is no doubt that computers play an important part in our daily life.
毫无疑问，电脑在我们的日常生活中扮演着重要的角色。
我妈妈昨晚让我一直做作业。
My mother kept me doing my homework last night.
(2). tiny computers which are inside patients’ bodies can keep their hearts beating normally.
(4). In factories, robots are controlled by computers that are like human brains.
(5). They can do work that is dangerous to humans.
毫无疑问
Keep sb/sth doing sth …
让某人一直做某事
下订单和取消订单
computers
usage
work
____________________________________ of a spaceship.
help doctors __________________________.
_________________________ in factories.
help businessmen _____________________.
Help astronauts control the speed and direction
find diseases easily and solve other problems.
help robots do dangerous work
place and cancel orders
Careful-reading
★ Expressions like“ First,second,third，fourth…” “help sb do sth” can help you when you retell it.
Task 1
(1) . Retell paragraph 1 ,according to the diagram.
Computers are very uesful at work . ……
computers
usage
Careful-reading
daily life
play games and ______________________.
____________ and ____________ at home.
_______________ by sending e-mails and _______________________________.
watch movies
do shopping
do business
communicate
chatting online
Task 2
What can computers do for us in our daily life
(2) . Read the paragraph 2 and answer the following question .
2. Find out some difficult sentences , according to Paragraph 2 .
(1)More and more people have personal computers that are used to play games and watch movies.
Careful-reading
Task 2
(2). Instead of writing letters on paper, People communicate by sending e-mails and chatting online.
computers
usage
Careful-reading
daily life
play games and ______________________.
____________ and ____________ at home.
_______________ by sending e-mails and _______________________________.
watch movies
do shopping
do business
communicate
chatting online
3. Retell paragraph 2, according to the diagram .
★ Expressions like “For example” “use sth to do sth”, “With the help of”, “Thanks to…” can help you When you retell it.
Task 2
Computers are very useful in our daily life . ……
computers
Careful-reading
problem
get headaches or ____________________.
won’t have enough time _______________.
something on the Internet is not ________________.
sore eyes
to study or exercise
true or good for us .
Task 3
What problems have computers brought
1 . Read the paragraph 3 and answer the following question .
2.Find out some difficult sentences ,according to paragraph 3.
1. For instance, If we work on computers too long ,we may get headache or sore eyes.
★ besides 和except 的区别
Careful-reading
Task 3
For instance = for example
2. Besides, not everything (that) we read on the Internet is true or good for us.
except: 除……之外（没有）
besides: 除……之外（还有）
除了康康之外，我们都通过了考试。
I have learned other subjects besides English .
除了英语之外，我还学了其他的科目。
We all passed the exam except Kangkang .
computers
Careful-reading
3. Retell the paragraph 3, according to the diagram.
problem
get headaches or ____________________.
won’t have enough time _______________.
something on the Internet is not _______________________.
sore eyes
to study or exercise
true or good for us
★ Expressions like “ for instance, what’s more , besides” are helpful When you retell it.
Task 3
If ,work, too long
If ,play, too much
Computers have brought some problems. ……
What’s the writer’s purpose(意图) of writing this passage
A: to tell us computers have some disadvantages.
B: to tell us computers have many advantages .
C: to tell us computers are useful, but they
must be used properly .
But _______ have some disadvantages.
For example ,
We can use ____ to do sth
_____ can help us do sth
Thanks to _______ ，we can…
With the help of _______, we can …
______ have many advantages.
In short, _____ are very helpful, we must use them correctly.
How to write a composition about computers
For instance,
What’s more ,
Besides ,
Body:
Beginning:
Conclusion:
There is no doubt that______play an important part in our daily life.
/ As we know ,_________ are very useful in our daily life.
/ _______ have changed our lives .
/_________ have improved our lives ,but they brought some problems.
In a word, _____are very helpful, they must be used properly.
提示作文
现在越来越多的中学生拥有了自己的手机。某英语报社对学生使用手机（cellphones）的利弊做了调查，结果利与弊如下：
利 1.与父母、朋友联系快速；
2.在线聊天、发短信（message）；
3. 听音乐，玩游戏，拍照；
弊 1.花费太多时间玩游戏；
2.没有认真听讲，学习差；
3.使用手机太久，对健康有害；
建议 1.在校不许使用手机
2.应该好好学习
要求（1）包含所提示内容，语言流畅，内容可适当补充。
（2）字数90词以上。首句已给出。
__________________________________________________________
—————————————————————————————
As we know ,cellphones are very popular. They play an important part in our daily life.
They have many advantages. For example, cellphones can help us keep in touch with our friends and parents quickly. We can use cellphones to chat on line and send short messages. With the help of cellphones, we can listen to music ,play games and take photos.
But they have many disadvantages. For instance, some students spend too much time playing games. What’s more, some students don’t listen to the teacher carefully so that they do badly in their study. Besides, if we use cellphones too long, it’s bad for our health. As a student, I think we are not allowed to use cellphones in the school, we should study well.
In short , cellphones are very useful, we should use them properly.
Thank you for listening.