冀教版八年级下册Unit 4 The Internet Connects Us Lesson 23 The Internet--Good or Bad?课件(共34张PPT)

(共34张PPT)
Lesson 23: The Internet—Good or Bad
Unit 4 The Internet Connects Us
单词：advantage, disadvantage, simple, coin, cause, less, aside, attack, web, steal, banking, properly
短语：far away, in seconds, Every coin has two sides, aside from, take up, be able to, open up, stay in touch
句子：(1) However, the Internet has advantages and disadvantages.
(2) And if a friend lives far away, the Internet makes it easy to stay in touch.
(3) Every coin has two sides.
Learning Goals
1
(4) It may even cause them to be less social with family and friends.
(5) The internet can be a useful tool, but don’t let it take up all of your time.
学习并积累一些与互联网、优缺点等相关的词汇和表达；能够听懂、读懂有关互联网的文章，能够运用所学知识谈论互联网的优点和缺点。
Learning Goals
1
2
Free Talk
Why are some parents worried about their kids using the Internet
Does the Internet make life simpler How
Are you using the Internet every day
Do you think it’s good or bad
Presentation
The Internet has changed the world. People are able to connect and share information in seconds. However, the Internet has advantages and disadvantages.
Where do you want to go？With the Internet，you could meet this student. She lives in Africa.
Some of the advantages are truly wonderful. In many ways it makes life easier and simpler. It helps us get things done more quickly. It opens up the world to us. And if a friend lives far away, the Internet makes it easy to stay in touch.
But every coin has two sides. Some of the disadvantages can become real problems if we don’t take care. Spending too much time online is harmful to people’s health. It may even cause them to be less social with family and friends. Aside from that, some people attack the web or use the Internet to steal others’ personal information, even banking information.
The Internet can be a useful tool, but don’t let it take up all of your time. Use the Internet properly and carefully and it can make your life more colourful.
How far do you want to go？The Internet can even take you to the South Pole！
New words
advantage
disadvantage
simple
coin
cause
less
n. 优势；有利条件
n. 缺点；不利因素
adj. 简单的；简明的
n. 硬币
v. 造成；引起
adj. & adv. 更少/小的(地)
n. 较少量；较小的部分
aside
attack
web
steal
banking
properly
adv. 除……之外；在旁边
v. 袭击；损害
n. 网络；网
v. 偷盗；窃取
n. 银行业
adv. 正确地
in seconds
far away
aside from
take up
在很短的时间内
遥远
除……之外
占用,占据;开始从事;接受（提议）
Let’s do it!
1. Read the lesson and fill in the table.
Good things about the Internet
Bad things about the Internet
1. It makes life easier and simpler.
2. It helps us get things done more quickly.
3. It opens up the world to us.
4. It makes it easy to stay in touch if a friend lives far away.
1. Spending too much time online is harmful to people’s health.
2. It may even cause people to be less social with family and friends.
3. Some people attack the web or use the Internet to steal others’ personal information, even banking information.
Let’s do it!
2. Listen to the dialogue and tick the correct answers.
1．What are Li Ming and Wang Mei talking about
□Their school project . □Their homework .
2．Why does Wang Mei think the Internet is good
□She can chat with her friends easily .
□She can watch TV programs .
3．Li Ming thinks they should use the Internet________．
□carefully and freely □properly and carefully
√
√
√
Language points
1. People are able to connect and share information in seconds. 人们能在很短的时间之内取得联系并分享信息。
(1) be able to do sth. 意为“能够做某事”，可用于多种时态，表示经过努力做到的事。
※ Are animals able to think
动物会思考吗？
辨析：be able to 与can
be able to (1)强调通过努力而获得的能力；
(2)有人称、时态和数的变化；
(3) 可用于多种时态。
can (1)强调自身已具备的能力；
(2)无人称和数的变化，且只有一般现在时(can )和一般过去时( could ) 两种时态；
(3) can还可以表示请求和允许，而 be able to 无此用法。
(2) in seconds 在很短的时间内
※ If you press the key, it will start in seconds.
如果你按下这个键，它就会在很短的时间内启动。
拓展：second 作名词，还有“秒”的意思；作序数词时意为“第二”。
※ 60 seconds make 1 minute.
60秒等于1分钟。
※ The Yellow River is the second longest river in China.
黄河是中国的第二长河。
2. However, the Internet has advantages and disadvantages.
advantage n. 优势；有利条件；有利因素
反义词为disadvantage n. 不利条件
take advantage of... 利用……
※ Living in a big city has many advantages.
住在大城市里有很多有利条件。
※ We should take advantage of every chance.
我们应该利用每一次机会。
3. It helps us get things done more quickly.
get sth. done 使某事被做。
get表示“使；让”，过去分词done在此作宾语补足语。
※ Would you please help me get the door locked
请问你能帮我把门锁了吗？
※ My watch didn’t work, so I got it repaired.
我的手表坏了，所以我修理了它。
4. And if a friend lives far away, the Internet makes it easy to stay in touch. 并且，如果朋友住得很远，互联网使相互联系变得容易。
(1) far away 遥远。此处作副词短语。
※ Does she live far away from here
她住得离这里很远吗？
拓展：far away也可用作形容词短语，意为“遥远的”。
※ My aunt came to visit us from a place far away.
我阿姨从很远的地方来看我们。
(2)“make + it + adj. + to do…”意为“使做某事变得……”。
※ The Internet makes it easy to communicate with each other.
互联网使得彼此间交流很容易。
(3) stay in touch保持联系。其同义短语为keep in touch。表示“与某人保持联系”时，后接with sb.。
※ We’ll do our best to stay in touch.
我们会努力保持联系。
※ I still stay in touch with my old friends.
我依然与老朋友们保持联系。
5. Spending too much time online is harmful to people’s health.
be harmful to 对……有害，相当于do harm to... 它的反义短语为be good for... 意为“对……有好处”。
※ Watching TV too much is harmful to your eyes.
看太多电视对你的眼睛有害。
6. It may even cause them to be less social with family and friends. 它甚至会导致他们与家人和朋友较少来往。
(1) cause动词，意为“造成；引起”。
常用短语：cause sb. sth.“给某人带来……”或cause sb. / sth. to do sth.“导致某人/某物做某事”。
※ Smoking can cause lung cancer.
吸烟可引发肺癌。
※ The cold water caused the plant to die.
冷水导致了植物的死亡。
※ What caused her to cry
是什么使她哭了
cause n .原因；起因；理由；动机
※ What was the cause of the accident
造成这一事故的原因是什么？
辨析：cause与reason
cause 起因；指引起某种后果的起因。 cause 常与of 连用, 即“the cause of...”。 The cause of the accident was that he drove too fast. 事故的起因是他开车太快。
reason 理由, 原因；指决定做某一件事或采取某一行动的理由, 由此而得出结论或解释。 reason 常与for 连用, 即“the reason for...” The reason for my absence was that I was ill. 我缺席的原因是我生病了。
(2) less 更少的（地）
是形容词或副词little的比较级，此处作副词。
※ I felt less hungry after I had some bread.
吃了一些面包之后，我觉得不那么饿了。
辨析：less 与fewer
① less 更少的, 作形容 词讲时, 常用来修饰不可数名词。是little的比较级。 We have less coffee than you have. 我们的咖啡比你们的少。 一 语辨异：
We should do more work with fewer people and less money. 我们应该用更少的人和更少的钱做更多的工作。
② fewer 更少的, 作形容词讲时, 常用来修饰可数名词复数。是few的比较级。 They have fewer eggs than you have. 他们的鸡蛋比你们的少。
7. Aside from that, some people attack the web… 除那之外，一些人还攻击网站……
aside from 除……以外
※ Aside from food and water, these people need medical care.
除了食物和水，这些难民需要医疗护理。
※ Aside from English, they also learned Chinese, physics, math and technology.
除了英语，他们还学语文、物理、数学和技术。
8. The Internet can be a useful tool, but don’t let it take up all of your time. 互联网可能是一种有用的工具，但不要让它占据你所有的时间。
take up 占用（时间）；占据（空间）
※ The table takes up too much room.
这张桌子太占地方。
※ This experiment will take up your much time.
这个实验会占用你大量的时间。
Let’s do it!
3. The following are the things you can do on the Internet . Tick the ones that you think are OK for junior high students and give your reasons.
□E mail with friends and family.
□Chat online with friends.
□Download documents from strangers.
□Write blogs.
□E mail with strangers.
□Open attachments from strangers.
□Send，receive or post photos with friends.
□Play online games for a whole day.
□Download programs.
□Stay online after 10:00 p.m.
Practice
1. You’d better not drink because it ____________ our health.
2. Although I have _____ water than you, I am glad to give you some.
3. The hobby _______ too much time.
is harmful to
Ⅰ.用括号内所给单词的适当形式填空。
takes up
less
in seconds little take up be harmful to
aside from far away stay in touch
4. People can share information __________ on the Internet. It’s very quick and convenient.
5.__________Jack, I don’t know anybody here.
6. My grandmother lives ____________from me. So I miss her a lot.
7. It is easy and quick to ____________ with our classmates online.
in seconds
far away
Aside from
stay in touch
II.翻译下列句子。
1.整个操作在数秒钟内完成。
The whole operation was over in seconds.
2.我们会坚持不懈，直到这项工作完成。
We will stay on it until we get the job done.
3.请记住一切事物都有对立面。
Please remember that every coin has two sides.
4.练习使学好英语变得容易。
Practice makes it easy to learn English well.
5.花太多时间玩电脑对孩子的眼睛有害。
Spending too much time on playing computer games is harmful to children’s eyes.
6.别让睡觉占用你太多的时间。
Don’t let sleep take up too much of your time.
Sum up
1. The new words and expressions：
advantage, disadvantage, simple, coin, cause, less, aside, attack, web, steal, banking, properly, far away, in seconds, Every coin has two sides, aside from, take up, be able to, open up, stay in touch
2. Important sentences：
(1) However, the Internet has advantages and disadvantages.
(2) And if a friend lives far away, the Internet makes it easy to stay in touch.
(3) Every coin has two sides.
(4) It may even cause them to be less social with family and friends.
(5) The internet can be a useful tool, but don’t let it take up all of your time.
Homework
1. Remember the new words and expressions learnt in this lesson.
2. Preview Lesson 24.