UNIT4 The Internet Connects Us Lesson23教案冀教版八年级下册

UNIT 4: The Internet Connects Us
Lesson 23: The Internet- Good or Bad
LESSON PREPARATION
LANGUAGE KNOWLEDGE
掌握词汇：advantage,simple,coin,cause,less. steal (stole/stolen)
接触词汇：disadvantage,aside,attack,web banking. properly
短语和句型：in seconds, far away, Every coin has two sides. aside from, take up
RESOURCES
.audiotape
LESSON STRUCTURE
CLASS OPENING
Greeting
Greet the class.
Teacher: Good morning/afternoon. class. Today I have some fun trivia for you about the Internet. Trivia is fun facts.
Internet Trivia Questions:
1. Did you know the Internet was invented in the U.S during the late 1950s to 1970s
2. Did you know the first emoticon(表情)looked like this -) It was meant to be a happy face, and later it came out with this :-)
3. Did you know the first message sent over the Internet was "LOG" It was supposed to be "LOGIN" but the Internet crashed
Review
1) Homework check.
2) Review key structures and phrases from the last lesson.
KEY CONCEPTS
FOCUS STRUCTURES:
Aside from that, some people attack the web or use the Internet to steal others' personal information. even banking information.
STEP 1: Present
CLASS WORK: Discussion and Think About It 1) Introduce the theme of today's lesson.
Teacher: In today's lesson we will talk about some of the advantages and disadvantages of the Internet. Even though the Internet is a great tool every coin has two sides. That is an English saying that means there are two different ways of looking at something. Write the saying Every coin has two sides. on the board. Explain. Students should master the word coin.
Teacher: How do you say "coin" in Chinese Do we have a similar saying in Chinese
Students：硬币。一个硬币有两个面：凡事都有两面性。
Teacher: Well done. Why is it important to consider the good things and bad things about something Try to answer this question using an adverbial clause with "if".
Students: If you only look at one side (good or bad). then you only have half of the information.
Teacher: Right.
2) Instruct the students to look at the pictures in this lesson and read the captions below. Discuss whether these are advantages of the Intenet.
Teacher: What are some of the good and bad things about the Internet
Make a list of advantages and disadvantages of the Intemet on the board.
Advantages
It helps you communicate and connect with people everywhere (i.e, online chat, e-mail).
2. It heips us share information quickly.
3. It's a good research tool.
Disadvantages
I. Not all of the information you read on the Internet is true.
2. Spending too much time on the Intemet (chatting. watching movies, ete. can be bad for you.
3. Some people use the Internet to do harm to others.
3) Ask two student volunteers to read the Thin
About /t questions aloud to the class and make sure the students understand what each question is asking. Explain the word "simple". Students should master this word.
4) Divide the class into groups to discuss the Think About It questions. Then have the groups share their answers with the class.
STEP 2: Read
GROUP WORK: Let's Do It! No. I
1)Instruct the students to read the lesson and complete the activity in groups.
2) Check and discuss the answers as a class. Draw the table on the board and have one student from each group come to the board and write down one of their answers. Explain the mastery words and phrase for this lesson that you have not yet covered (cause less, steal and aside from).
STEP 3: Listen
INDEPENDENT/CLASS WORK: Ler's Do It! Na. 2 1) Play the listening material for Lesson 23 (The Internet-Good or Bad ) once and ask the students just to listen.
2)Play the listening material a second time and ask the student to complete the exercise
3)Check and discuss the answers as a class. STEP 4: Task
PAIR WORK: Ler's Do Ir! No. 3
1) Instruct the students to work in pairs to talk about the list in Ler's Do /r! No. 3 and discuss which things on the list they think are appropriate for junior high school students. For each thing on the list, students should give their reasons why they think it is or is not appropriate.
2) Ask the pairs to share their answers with the class. Discuss.
CLASS CLOSING
Assign homework:
Looking at Both Sides: Use the list of advantages and disadvantages of the Internet that you made in class to write a news report. Give your readers some advice about what to do and not do on the Internet. Consider how people can make the most of the good things and avoid the bad things.
EXTENSION
CLASS WORK: What's Wrong
Play Whar's Wrong to review grammar structures and fix common grammar errors.
1) Write sentences on the blackboard that contain errors (and some that don't contain errors).
2) Divide the class into two teams. The teams take turns trying to correct each sentence. They erase the incorrect words and write in the correct words. If a team cannot correct a sentence. or answers incorrectly, the other team can try. Keep score. 3)Write sentences that pair concepts incorrectly, or that contain grammar errors.
For Example:
This game is simple. It's easy to play. (correct) He is tired today. He has less energy than usual. (correct)
If you work hard, you will succeed. (correct) Every coin has three sides. (incorrect)-Every coin has two sides.
If you don't have the Internet, you can't read books. (incorrect)-If you don't have the Intemet. you can't read books online.
Wendy uses a modem computer. It's only 50 vears old. (incorrect)-Wendy uses a modern computer. It's only I vear old.
If you pay for something, that means you stole it. (incorrect)-If you pay for something, that means you didn't steal it.
* See the "Games"section at the back of this guide for further instructions on how to play.
LANGUAGE NOTES
1. People are able to connect and share information in seconds.几秒钟之内，人们就能够相互联系并分享信息。
be able to do sth.意为“能，能够”，主要指具体 做某件事的能力，有人称和时态的变化。情态动词can也表示“能，会”，只有现在时can和过去时could两种时态，没有人称变化。例如：
Can you come tomorrow 明天你能来吗？
He said that we could go there by bus.他说我们可 以乘公共汽车去那里。
Will you be able to come tomorrow 明天你能来吗
I'm able to do the work all by myself.我能够独立 做这项工作。
2. It helps us get things done more quickly.它能使 我们把事情做得更快。
在句中get sth.done意为“完成，做完某事”，通常指由自己完成。此外，get/have sth.done 还 有“让某人做某事”的意思。例如：
I got my homework finished. 我做完了作业。 I am going to get/have my hair cut.我要去剪发 3. And if a friend lives far away, the Internet makes it easy to stay in touch.如果朋友住得很远，互联 网使相互联系变得容易。
“make+形式宾语+形容词（+for sb.）+动词不定式”意为“使做某事变得···”例如：
The teacher tried to make it interesting for the students to learn math.老师尽力使数学学起来有 趣。
4. But every coin has two sides.但是任何事物都有 两面（有利也有弊）。
此句直译为“每个硬币都有两面”。在写作时，一般作名言使用。例如：
As we know, every coin has two sides.正如我们所 知道的，凡事都有两面性。
5. Spending too much time online is harmful to people's health.在网上花太多的时间对人们的健康有害。
be harmful to 意为“对·..·有害处”。例如： Smoking can be harmful to your health.吸烟会对你 的身体有害。
Fruit juice can be harmful to children's teeth.果汁 可能损坏儿童的牙齿。
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。
cause 在句中作动词，意为“造成，使（发生）”，其后可直接跟造成的结果或发生的事情作宾语，也可跟双宾语或接动词不定式复合结构作宾语。例如；
Smoking can cause lung cancer.吸烟可以引发肺 癌。
The cold water caused the plant to die.冷水导致了 植物的死亡。
What caused her to cry =What made her cry 是什 么使她哭了？
7. 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 意为“占用（时间）：占据（空间）”。例如：
The table takes up too much room.这张桌子太占地 方。
I won't take up any more of your time.我不再占用 你的时间了。