北师大版高一英语必修二Lesson1 tomorrow's world words and expressions课件(共32张PPT).ppt

1、Unit 4 CyberspaceLesson 1 Tomorrows WorldMake a list of those modern technologies which help us do many things.MP4CD or DVDair-conditioners microwave oven digital cameras computerA person who enters other peoples computer programmes in secrethackerRead to learnFind the following words in the article

2、.The use of computers to make situations feel and look realvirtual realityHave an accident by violently hitting somethingcrashSomeone who does terrible things to harm countries,governments,and people.terroristComputer system that allows millions people around the world to share information.the NetA

3、terrible situation in which everything goes wrong.chaosPre-reading:Match the paragraphs with these headings.a)pessimistic opinionsb)seeing the futurec)optimistic opinionsd)the Internet growtha)c)b)d)Para 1:Para 2:Para 3:Para 4:Pessimistic or optimistic attitude to the future of the Internet.pessimis

4、ticoptimisticpessimistichackersCyber terroristsnowin the futurecyber criminaloptimisticin the futurevirtual realityworkshopstudyget entertainment TV&mail servicewill disappearalreadyin the next few yearsshop on the Internetget informationbuy booksfind out holiday offersbook ticketsWhile-reading:Answ

5、er the following questions.1.How has the Internet grown in the last thirty years?The Internet has grown from only 200 computers in 1983 to around 50 million now.2.Why are some experts pessimistic about the future?Because they worry about the activities of cyber criminals.3.What possible changes do t

6、he optimistic believe the Internet can bring to our lives?They believe that people can do shopping,get entertainment instead of the television and the e-mail will take the place of the postal service.People may even live and work in a virtual reality.the InternetAdvantageDisadvantage1.shopping,write

7、 e-mails,chat with friends2.play games or see movies on line3.get all kinds of the latest news 4.write in blog and share with others5.search for useful information for study6.distance learning,etc 1.chat with fake ID2.Terrorists,hackers will attack and cause chaos.3.If virus develops,people lose all

8、 the files.4.Students tend to copy and paste,and they become lazy,etcDiscuss the advantage and disadvantage of the Net.1.harm:vt.&n do(no/great/much)harm to 对某人有害 there is no harm in doing sth.做什么无害 be harmful to 对有害e.g.Reading in dim light will harm your eyes.Its harmful to your health to drink too

9、 much.区别：harm,hurt,injureharm 泛指任何伤害，一般伤害轻。hurt指肉体造成强烈的疼痛，也只对感情造成伤害。injure 着重容貌，机能的损坏。2.affect：vt.1)影响e.g.Your opinion will not affect my decision.2)感动The audience was deeply affected.3)侵袭，感染His lung has been affected by cancer.have an effect on对有影响;对起作用，产生效果3.in the last/past+一段时间 “在过去的一段时间内”，句子的谓语

10、动词常用现在完成时态。e.g.He has made rapid progress in the past 3 weeks.4.pessimistic adj.悲观的，悲观主义的5.be pessimistic about 对悲观6.be optimistic about对乐观 5.get into a.进入，参与（开始）某事 I got into a conversation to a Japanese.b.养成（习惯），习惯于 Dont get into the habit of smoking.c.开始熟悉，学会 I will soon get into the way of deali

11、ng with things.d.陷入，达到 get into trouble 6.offer n.&vt.a.“主动提出，愿意给予”，“提议”offer sb sth.=offer sth.to sbThe manager offered me a better position.=The manager offered a better position to me.offer to do sth.“主动提出做(后不接宾语从句）.b.“出价”She offered 10$for the book.c.可数名词。She has received an offer of marriage.ac

12、cept/take an offer “接受建议”refuse/reject/turn down an offer“拒绝建议”Offer,provide,supply 都有“供给，提供”的意思，用法不同。Offer sb.sth.=offer sth.to sb.provide sb.with sth.=provide sth.for sb.We are here to provide the public with service.注意：provided/providing that“如果，假如，在条件下”Provided that the price is right,we will bu

13、y it.Supply sb.with sth.=supply sth.to sb.GrammarPredictions will and be going toRead the following sentences from the text.In pairs,decide whicha)talks about a future event we can predict from a present situation.b)expresses our opinions and beliefs about the future.1.,“it is clear that we are goin

14、g to see a huge growth of shopping on the Internet.”2.She also believes that,in the future,we will get entertainment from the Net and that television will probably disappear.3.“Personally,I think virtual reality will become part of modern life,”abbwill和be going to的基本用法1.will的用法1)will 表将来，可用于各种人称。如：I

15、 wont argue with you.我不愿意跟你争辩。He will go to Hainan this winter.今年冬天他打算去海南。2)will 可表习惯或反复发生的动作。如：John will fall asleep in church.约翰做礼拜时老睡觉。3)will 可表请求，指将来，多用于疑问句。如：Will you dine with me tomorrow,Lewis?刘易斯，明天你同我一道吃饭好吗?4)Will用于否定句中，若主语为物，则意为“不起作用”。如：The drawer wont shut.抽屉关不上了。My fountain pen wouldnt w

16、rite.我的自来水笔不能写字了。2.be going to的用法1)多用来表示主观上打算做某事或根据某种迹象判断要发生某事。如：Were going to pick apples next Wednesday.我们下周三打算去摘苹果。Look at the heavy clouds！Its going to rain.看那黑云！天要下雨了。2)也可用来表示即将发生的事。如：The plane is going to take off in ten minutes.飞机将在十分钟后起飞。Homework1.Do Exercises 8,9 and 10 on page 9.2.Write a composition about cyberspace,including the summary of the text and your opinion on it.3.Preview Lesson 2.