1、八年级英语（JJ下）教学课件,Unit 4,Lesson 23:The InternetGood or Bad?,Key words & phrases: advantage, disadvantage, simple, coin, cause, less, aside, attack, web, steal, banking, properly, in seconds, far away, aside from, take up Key sentences: 1. People are able to connect and share information in seconds.,Lea
2、rning Targets,2. It helps us get things done more quickly.3. And if a friend lives far away, the Internet makes it easy to stay in touch. 4. But every coin has two sides.5. Spending too much time online is harmful to peoples health.,6. It may even cause them to be less social with family and friends
3、. 7. Aside from that, some people attack the web 8. The Internet can be a useful tool, but dont let it take up all of your time.,What do you do on the Internet ? Does the Internet make life simple?,Lead in,Where do these students live? They live in Africa. With the Internet, we could meet them in se
4、conds.,Whats this? Its the South Pole. Its far away from us . But the Internet can even take us there.,I have a friend in America . The Internet make it easy for me to stay in touch with her.,We need many things in life . But I dont like to go outside ,the Internet can get it done quickly .,Every _
5、has two sides. Everything has two sides( _or _), so is the Internet.,coin,advantages,disadvantages,Advantages (优点 优势）,In many ways the Internet makes our life easy and simple.,Spending too much time online is harmful to peoples health.,Disadvantages:,Disadvantages:,It may cause people to be less soc
6、ial with family and friends,Disadvantages:,Aside from(除此以外) that, Some people attack the web or steal others personal information, even banking information. So we must use the Internet properly.,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
7、.更少/小的(地) n.较少量；较小的部分,Words and expressions,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 除此之外 占用，占据；开始从事；接受（提议）,Why are some parents worried about their kids using the Internet? Does the Internet make
8、life simpler? How?,THINK ABOUT IT,Read the lesson and fill in the table.,1. It makes life easier and simpler.,1. Spending too much time online is harmful to peoples health.,1,Lets Do It!,Presentation,2. It helps us get things done more quickly. 3. It opens up the world to us. 4. It is easy to stay i
9、n touch with friends.,2. It causes them to be less social with family and friends. 3. Some people attack the web or steal others personal information.,Listen to the dialogue and tick the correct answers. What are Li Ming and Wang Mei talking about?Their school project. Their homework.,2,2. Why does
10、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
11、 students and give your reasons.,3,E-mail with friends and family. Chat online with friends. Download documents from strangers. Write blogs. E-mail with strangers.,Open attanchments from strangers. Send, receive or post photos with friends. Play online games for a whole day. Download programs. Stay
12、online after 10:00p.m.,1. People are able to connect and share information in seconds. 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。,Language points,例：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 abl
13、e to come tomorrow?明天你能来吗？Im able to do the work all by myself.我能够独立做这项工作。,in seconds 短时间内；几秒钟之内 You press a button and it comes on in seconds. 你只要触摸按键，它就会在几秒内启动。,2. It helps us get things done more quickly.get sth. done “完成，做完某事”，通常由自己完成。此外，get/have sth. done还有“让某人做某事”的意思。 例：I am going to get/have
14、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. “make+ it+ adj. (+for sb.) +to do”意为“使做某事变得”。 例：The teacher tried to make it interesting for the students to learn math. 老师尽力使数学对学生们来说学起来有趣。,far away 遥远的；在远处 例：Suddenly they seem to be hearing somethin
15、g from far away.突然，他们似乎听到什么声音从远处传来。I finished college and live far away from her.我完成了大学的学业，住得离她很远。,4. But every coin has two sides.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：As we know, every coin has two sides.正如我们所知道的，凡事都有两面性。Every coin has two sides, so does the Internet.凡事都有两面性，因特网也是如此。,5. Spending too muc
16、h time online is harmful to peoples health.be harmful to 对有害处 例：Smoking can be harmful to your health.吸烟会对你的身体有害。Fruit juice can be harmful to childrens 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.cause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。
17、 例：Smoking can cause lung cancer.吸烟可引发肺癌。 What caused her to cry?是什么使她哭了?,7. Aside from that, some people attack the web aside from 除以外 例：Aside from headaches, he showed no signs of lasting brain damage.除了头痛，没有任何迹象表明他曾受过脑损伤。,8. The Internet can be a useful tool, but dont let it take up all of your t
18、ime.take up 占用（时间）；占据（空间）例：The table takes up too much room.这张桌子太占地方。I wont take up any more of your time.我不再占用你的时间了。,一、根据汉语意思完成句子。,In this economy you need every _ (优势). 2. The problem is by no means as _ (简单的) as we first thought. 3. This may all seem like a distant dream, but it is not so _ _ (遥远
19、的).,advantage,simple,far away,Exercises,4. You can contact information so you can _ _ _(保持联系). 5. As a popular saying goes, every_ (硬币) has two sides. 6. Television can also be_ (有害的) to us.,stay in touch,coin,harmful,7. What _ (导致) the illness? 8. He _ _(占用) too much time to play computer games eve
20、ry day. 9. _ _ （除此之外）being fun and good exercise, swimming is a very useful skill,causes,takes up,Aside from,二、汉译英。,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. 请记住一切都有对立面。 Please remember that every coin has two sides.,4
21、. 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 childrens eyes. 6. 别让睡觉占用你太多的时间。 Dont let sleep take up too much of your time.,Summary,1. Learn some new words and expressions. 2. Be able to understand the passage about the Internet. 3. Learn some useful words and expressions about the advantages and disadvantages of the Internet.,Homework,Write a passage to talk about the advantages and disadvantages of the Internet. (50-100 words),