仁爱科普版九年级上册Unit 4 Amazing Science Topic 3 Section C 课件 (共25张PPT，内嵌音、视频)

(共25张PPT)
Unit 4
Amazing Science
Topic 3
Section C
新
课
导
入
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Language Goal
能熟悉并正确运用本课时的重点单词和短语
能掌握定语从句的结构和用法
能谈论电脑的重要性
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Computers were invented in the USA in the 1950s, now they have
become very important in many areas of work and leisure.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
What can the computers use for
medical care
space
新知学习
重点研讨
课堂小结
当堂检测
学习目标
business
industry
新知学习
重点研讨
课堂小结
当堂检测
学习目标
education
daily life
新知学习
重点研讨
课堂小结
当堂检测
学习目标
education business
industry communication
daily life medical care
entertainment sports
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1a 1. Tick the fields we use the computer in.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
2. Can you give an example of the use of the computer in one of the fields above
新知学习
重点研讨
课堂小结
当堂检测
学习目标
The Importance of Computers
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. In space, computers have been used to control the speed and direction of a spaceship.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. In factories, robots are controlled by computers that are like human brains. They can do work that is dangerous to humans. In business, computers are used to place and cancel orders. They are also making the workplace safer and better.
Read and understand.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Since the Internet came into being, people's lives at home have 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 on line. The whole world is connected. The Internet is making the world smaller, like a village.
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.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Paragraph 1. Since computers were invented in the USA in the
1950s, they have become very important in many
areas of work and leisure.
Paragraph 2. Since the Internet came into being, people’s lives at
home have been changed, too.
Paragraph 3. Computers have improved our lives, but they have
brought problems, too.
1b Read 1a and complete the following tasks.
1. Underline the topic sentence of each paragraph.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
computers
usage
problem
work
daily life
_________________________ of a spaceship
help doctors ___________________
_______________ in factories.
help businessmen _____________________
play games and_______________
____________ and ___________ at home
____________ by sending e-mails and _______________
get headaches or ___________
don’t have enough time ________________
something on Internet is not ____________
control the speed and direction
find diseases easily
control the robots
place and cancel orders
watch movies
do shopping
do business
communicate
chatting online
sore eyes
to study or exercise
true or good
1b 2. Complete the following diagram.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Talk about the advantages and disadvantages of computer.
Advantages:...
Disadvantages:...
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…
新知学习
重点研讨
课堂小结
当堂检测
学习目标
2 Write a short passage with the title One Day Without Computers. The following information may help you.
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.
新知学习
重点研讨
课堂小结
当堂检测
学习目标
Language points
新知学习
重点研讨
课堂小结
当堂检测
学习目标
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。
doubt n. & v. 怀疑，疑惑
(1)doubt (vt.)+ 从句
I doubt whether/if he'll change his mind.
I don't doubt that they will be able to solve the problems.
(2)doubt (vi.)+ about/of
There is no reason to doubt of his honesty.
2. 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和在线聊天的
方式进行交流，代替了用纸写信。
instead单独使用，可放于句尾，如果放于句中应该用逗号隔开。
而instead of通常放于句中，后面要加名词，代词，或者动名词。
I didn't go to Beijing, instead, he went there.
=I didn't go to Beijing, he went there, instead.
He went to Beijing instead of me.
instead of doing 代替，而不是……
He stayed at home yesterday instead of going out to watch movies.
昨天我呆在家里而不是外出看电视。
I gave him advice instead of money. 我给了他忠告，而不是钱。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
3.The whole world is connected.网络连接了全世界。
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
新知学习
重点研讨
课堂小结
当堂检测
学习目标
4. For instance, if we work on computers too long, we may get
headaches or sore eyes.
例如，如果我们在计算机前工作太久，也许会头痛或眼睛酸。
for instance 例如，举例
如：For instance,you can study English by listening to the tapes.
例如，你可以通过听磁带来学习英语。
such as, for example, for instance用法
such as用来列举整体之中的部分同类人或事物作例。such as
之前一般用逗号和主句隔开，such as之后没有逗号，直接加
名词性短语。
Some of the European languages come from Latin, such as
French, Italian and Spanish.部分欧洲的语言，例如法语、意大利
语、西班牙语，都是源于拉丁语。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
for example是列举整体之中的一个为例，在句子中多用作插入语，位置可以在句首、句中或句末，用逗号与主句隔开，for example之后也有逗号。
Noise, for example, is a kind of pollution as well.
噪音，打个比方，也是一种污染。
for instance主要用于列举表示事例情况的例子。有时，相当于such as，后接具体的事物。
You can choose any one of them, for instance, this one on the left.
你可以选择其中任何一个，例如靠左边的这个。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
5. Besides, not everything we read on the Internet is true or good for us.
另外，我们在网上看到的东西并不都是真实的、有益的。
(1)besides与except用于肯定句时，except意为“除……之外（不再有）”；besides意为“除……之外（还有）”。
如：I have another blue pen besides this one.
除了这支外，我还有另一支蓝色钢笔。（1+1，共2支）
We all passed the exam except Tom.
我们都通过了考试，汤姆除外。（整体中……汤姆一人不及格）
新知学习
重点研讨
课堂小结
当堂检测
学习目标
(2)except前几乎总有all、any、every、no及其复合词等词。
如：He answered all the questions except the last one.
除了最后一个问题没答外，其余问题他都答了。
(3)except后接名词、代词、动名词和动词原形，这时except=but；
但except后跟副词、介词短语时，不能用but代替。
如：The window is never open except in summer.
这扇窗户从来不开，除夏季外。
He did nothing except/ but clean the house.
他只是打扫了房子。
新知学习
重点研讨
课堂小结
当堂检测
学习目标
新知学习
重点研讨
课堂小结
当堂检测
学习目标
掌握定语从句的结构和用法
谈论电脑的重要性
Unit 4 Topic 3
Section C
新知学习
重点研讨
课堂小结
当堂检测
学习目标
一、用括号内所给的提示完成句子。
1. ______ ___ ___ _____ (毫无疑问) that you are right.
2. In business, computers are used to ______ ____ _____ ______
(预定和取消订单).
3.The two cities ____ ________ ____(被……连接) a bridge.
4.The outside of an orange is a little bitter, but the _______(在……
里) is sweet.
5.Computers help us at work and at home, but they must be used
_________(恰当地).
There is no doubt
place and cancel orders
are connected by
inside
properly