冀教版八年级下册Unit 4 The Internet Connects UsLesson 23 The Internet--Good or Bad?教案配套ppt课件

这是一份冀教版八年级下册Unit 4 The Internet Connects UsLesson 23 The Internet--Good or Bad?教案配套ppt课件，文件包含Lesson23pptx、Lesson23Letsdoit2wav、Lesson23mp3等3份课件配套教学资源，其中PPT共36页， 欢迎下载使用。
Key wrds & phrases: advantage; simple; cin; cause; less; steal; in secnds; far away; aside frm; take up. Key sentences: 1. Every cin has tw sides. 2. And if a friend lives far away, the Internet makes it easy t stay in tuch. 3. It may even cause them t be less scial with family and friends. 4. The Internet can be a useful tl, but dn’t let it take up all f yur time.T talk abut advantages and disadvantages f the Internet.
Wrds & Expressins
advantagedisadvantagesimplecincauseless
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
asideattackwebstealbankingprperly
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 secndsfar awayaside frmtake 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）
What are they ding n the Internet?
shpping nline
sending e-mails
chatting nline
studying nline
watching mvies
playing cmputer games
Every ____ has tw sides. Everything has tw sides ( __________ r ____________), s des the Internet.
advantages
disadvantages
Why are sme parents wrried abut their kids using the Internet?Des the Internet make life simpler？Hw?Are yu using the Internet every day? D yu think it’s gd r bad?
Presentatin
The Internet has changed the wrld. Peple are able t cnnect and share infrmatin in secnds. Hwever，the Internet has advantages and disadvantages.
Where d yu want t g？With the Internet，yu culd meet this student . She lives in Africa .
Sme f the advantages are truly wnderful . In many ways it makes life easier and simpler . It helps us get things dne mre quickly . It pens up the wrld t us . And if a friend lives far away, the Internet makes it easy t stay in tuch.
But every cin has tw sides. Sme f the disadvantages can becme real prblems if we dn’t take care . Spending t much time nline is harmful t peple’s health . It may even cause them t be less scial with family and friends . Aside frm that，sme peple attack the web r use the Internet t steal thers’ persnal infrmatin, even banking infrmatin .
The Internet can be a useful tl，but dn’t let it take up all f yur time . Use the Internet prperly and carefully and it can make yur life mre clurful.
Hw far d yu want t g？The Internet can even take yu t the Suth Ple！
Task 1 Skimming and matching
Fast reading
Let's summarize
Para1 Para2Para3Para4
The advantages f the Internet. The disadvantages f the Internet.The Internet has changed the wrld.We shuld use the Internet prperly and carefully.
Task 2 Chsing True r False
Careful reading
1.Peple can cnnect and share infrmatin in hurs. 2.The Internet can make ur life easier and simpler in many ways . 3.Sme disadvantages can becme real prblems. 4.The Internet is a useful tl s we can let it take up all f ur time.
Let’s D It!　
1. Read the lessn and fill in the table.
Gd things abut the Internet
Bad things abut the Internet
1.It makes life easier and simpler. 2.It helps us get things dne mre quickly. 3.It pens up the wrld t us. 4.It makes it easy t stay in tuch if a friend lives far away.
1. Spending t much time nline is harmful t peple's health. 2. It may even cause peple t be less scial with family and friends. 3. Sme peple attack the web r use the Internet t steal thers' persnal infrmatin, even banking infrmatin.
2. Listen t the dialgue and tick the crrect answers.
1．What are Li Ming and Wang Mei talking abut? □Their schl prject . □Their hmewrk . 2．Why des Wang Mei think the Internet is gd? □She can chat with her friends easily . □She can watch TV prgrams . 3．Li Ming thinks they shuld use the Internet________． □carefully and freely □prperly and carefully
Li Ming: Our schl prject is “The Internet — gd r bad?” What d yu think, Wang Mei? Wang Mei: I think it’s gd because I can chat with my friends easily. I can share infrmatin and even use it t learn English. What abut yu?Li Ming: I dn’t think it’s gd fr ur health if we spend t much time nline. Sme students like t play games and dn’t study hard. We shuld use the Internet prperly and carefully.
listening material
3. The fllwing are the things yu can d n the Internet . Tick the nes that yu think are OK fr junir high students and give yur reasns .
□E­mail with friends and family. □Chat nline with friends. □Dwnlad dcuments frm strangers. □Write blgs. □E­mail with strangers. □Open attachments frm strangers. □Send，receive r pst phts with friends. □Play nline games fr a whle day. □Dwnlad prgrams. □Stay nline after 10:00 p.m.
Language pints
1. Peple are able t cnnect and share infrmatin in secnds.（教材P58）
be able t+ 动词原形，表示“有能力做某事”。e.g. Wrk hard, and yu will be able t g t a gd university.努力学习，你就能上个好大学。
辨析：be able t 与can
in secnds 在很短的时间内e.g. Wait here, and I will be back in secnds. 在这儿等着，我很快就会回来。拓展：secnd 作名词，还有“秒”的意思；作序数词时意为“第二”。e.g. 60 secnds make 1 minute.60 秒等于1 分钟。The Yellw River is the secnd lngest river in China.黄河是中国的第二长河。
2. Hwever, the Internet has advantages and disadvantages.（教材P58）
advantage 优势；有利条件；有利因素反义词为disadvantage n. 不利条件take advantage f...利用……e.g. Living in a big city has many advantages.住在大城市里有很多有利条件。We shuld take advantage f every chance.我们应该利用每一次机会。
3. It helps us get things dne mre quickly.（教材P58）
get sth. dne 使某事被做 get表示“使；让”, 过去分词dne在此作宾语补足语。e.g. Wuld yu please help me get the dr lcked?请问你能帮我把门锁了吗？My watch didn’t wrk, s I gt 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 t stay in tuch.（教材P58）
far away 意为“遥远”, 表示距离, 在句中作状语或表语, 有时away 可以省略。如果表示“离……很远”, 则用“far away frm...”。如果away前有具体的数字修饰时, 则不用far。e.g. He lives far away frm the schl. 他住得离学校很远。 My hme is 5 miles away frm the schl. 我家离学校有五英里远。
stay in tuch 保持联系同义短语为keep in tuch。其中tuch 作名词, 意为“联系”。e.g. I have stayed/kept in tuch with him since we parted.自从我们分开以后, 我与他一直保持联系。Please stay/keep in clse tuch with me. 请与我保持密切联系。拓展：get in tuch with… 和……取得联系 lse tuch 失去联系 ut f tuch 失去联系
5. Spending t much time nline is harmful t peple’s health.（教材P58）
be harmful t 对……有害相当于d harm t... 它的反义短语为be gd fr... 意为“对……有好处”。e.g. Watching TV t much is harmful t yur eyes.看太多电视对你的眼睛有害。
6. It may even cause them t be less scial with family and friends.（教材P58）
cause v. 使发生；引起；造成 常用结构：cause sb. sth. = cause sth. t/fr sb.给某人带来某事cause n . 原因；起因；理由；动机e.g. His absence caused me much truble.他的缺席给我造成了许多麻烦。What was the cause f the accident? 造成这一事故的原因是什么？
辨析：cause与reasn
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e.g. The film was less interesting than the bk. 这部电影不如书有趣。
辨析：less 与fewer
7. Aside frm that, sme peple attack the web r use the Internet t steal thers’ persnal infrmatin, even banking infrmatin.
aside frm 除……之外e.g. Aside frm the little savings, I have n ther mney.除了这点儿储蓄，我再也没有钱了。Aside frm cars, the factry turns ut bicycles.除小汽车之外，这家工厂还生产自行车。
steal v. 偷；窃取 steal—stle—stlensteal sth. frm...从……偷某物e.g. Their car was stlen. 他们的汽车被偷了。Yesterday the thief stle the wallet frm me.昨天那个小偷偷走了我的钱包。
1. —What d yu think f the sfa? —Nt bad, but it may ________ t much space f ur living rm. A. take up B. put up C. pen up D. make up
2. There will be ________ cars in the city because peple will prefer the subway. A. fewer　　　B. less　　　C. mre D. much
3. —All things have advantages and disadvantages.—Sure. ________．A．East r west, hme is the bestB．The early bird catches the wrmC．Many hands make light wrkD．Every cin has tw sides
4. Finish yur hmewrk first, and then yu'll ________ watch TV fr an hur. A. can B. be able t C. able t D. culd