UNIT4 Lesson 23 教学课件--冀教版初中英语八年级下

(共32张PPT)
Lesson 23: The Internet—Good or Bad
UNIT 4 The Internet Connects Us
学 习 目 标
掌握词汇：advantage, simple, coin, cause, less, steal
接触词汇：disadvantage, aside, attack, web, banking, properly
短语和句子：in seconds, far away, aside from, take up
However, the Internet has advantages and disadvantages.
And if a friend lives far away, the Internet makes it easy to stay in touch.
Every coin has two sides.
It may even cause them to be less social with family and friends.
The internet can be a useful tool, but don’t let it take up all of your time.
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正确地看待互联网，明辨是非，树立正确的价值观。
能够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。
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课 堂 导 入
Free talk
Talk about the following questions:
Why are some parents worried about their kids using the Internet
Does the Internet make life simple How
课 堂 学 习
Words and phrases
He is tall, so his height is an advantage in basketball.
advantage n. 优势；有利条件；有利因素
反义词：disadvantage n. 缺点；不利因素
The answer is very simple.
simple adj. 简单的；简明的
coin n. 硬币
Cars can cause air pollution. What should we do to cause less pollution
cause v. 造成；引起
less adj. & adv. (little的比较级)更少的（地）；更小的（地）n. 较少量；较小的部分
Be careful. Some people may attack the web or use the Internet to steal your information.
steal v. (stole/stolen) 偷窃；窃取
attack v. 袭击；损害
web n. 网络；网
bank n. 银行→
banking n. 银行业
We need to plan our time properly.
properly adv. 正确地
His name is John. Aside from his name, I know his address.
aside from除……之外 aside adv. 除……之外；在旁边
The scientist is busy. You’d better not take up too much of his time.
take up占用，占据；开始从事；接受（建议）
You can get much information in seconds on the Internet.
in seconds在很短的时间内
I have some pen friends who live far away.
far away遥远
Read and write
Read the lesson quickly and write true (T) or false (F).
1. The Internet has advantages and disadvantages. ( )
2. People can connect and share information in seconds. ( )
3.The Internet can make our life easier and simpler in many ways. ( )
4. The Internet is a useful tool so we can let it take up all of our time. ( )
5. It is always safe on the Internet. ( )
T
T
F
T
F
Read the lesson and fill in the table.
Read and fill
In many ways it makes life easier and simpler.
It helps us get things done more quickly.
It opens up the world to us.
If a friend lives far away, the Internet makes it easy to stay in touch.
Good things about the Internet Bad things about the Internet
Spending too much time online is harmful to people’s health.
It may even cause them to be less social with family and friends.
Some people attack the web or use the Internet to steal others’ personal information, even banking information.
Read and find out
Read the lesson and find out topic sentences of each paragraph.
Para. 1: The Internet has advantages and disadvantages.
Para. 2: Some of the advantages are truly wonderful.
Para. 3: Some of the disadvantages can become real problems if we don’t take care.
Para. 4: The Internet can be a useful tool, but don't let it take up all of your time.
Read and find out
Find out the main idea of the whole passage.
The Internet has advantages and disadvantages.
Listen and tick
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
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.
Tick and say
E-mail with friends and family.
Chat online with friends.
Download documents from strangers.
Write blogs.
E-mail with strangers.
Open attachments from strangers.
Play online games for a whole day.
Download programs.
Stay online after 10:00 p.m.
Summary
Sum up the words and phrases we’ve learnt in this period with the class:
advantage, simple, coin, cause, less, steal, disadvantage, aside, attack, web, banking, properly, in seconds, far away, aside from, take up
Summary
2. Sum up the structure of the lesson:
Para. 1: The Internet has advantages and disadvantages.
Para. 2: Some of the advantages are truly wonderful.
Para. 3: Some of the disadvantages can become real problems if we don’t take care.
Para. 4: The Internet can be a useful tool, but don't let it take up all of your time.
People are able to connect and share information in seconds.
人们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。可表示经过努力做到的事。
Are animals able to think 动物会思考吗？
【拓展】can情态动词，意为“可以，能够”，只用于一般现在时和一般过去时，强调自身已具备的能力。
I can speak English.我谁说英语。
Language points
(2) in seconds在很短的时间内
If you press the key, it will start in seconds.
你如果按下这个键，它就会在很短的时间内启动。
2. 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 teacher tried to make his class interesting.老师尽力使他的课有趣。
(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。
3. 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，使(发生)”。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
(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。
4. 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。
5. 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。
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.
课 堂 达 标
is harmful to
Ⅰ.用方框中所给词或短语的适当形式填空
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
in seconds little take up be harmful to aside from far away stay in touch
stay in touch
1. Writing: Write a passage about the things that we can do and can’t do on the Internet. Remember to give your reasons.
2. Retell the lesson.
3. Preview Lesson 24.
Homework
Thank you !