山东省莘县2012-2013学年高一英语课件：UNIT4 LESSON 2 .ppt

1、Unit 4 CyberspaceLesson 2&Lesson 31.Find out some information about the development of the Internet;2.Briefly introduce the development of the Net;3.Learn the first and second conditional.Listening:Listen and answer:Which “websites”can you visit to do these things?a)find out whats going on in your t

2、ownb)look for a jobc)find out world newsd)get information for a school history projecte)write to your friends by e-mailf)buy clothes3.When did people start calling it the“Internet”?a)the 1980s b)the early 1990s c)the late 1990s4.When did the Internet start to grow very fast?a)the late 1980s b)the mi

3、d-1990s c)the late 1990sNow listen to the tape twice then do the exercise 2 on page 101.Why did the Net begin?a)for military reasons b)for scientific reasons c)for business reasons2.What year did it start in?a)1959 b)1969 c)1979What is virtual reality？The use of computers to make situations feel and

4、 look real.virtual reality holidays learning to fly using virtual reality technology playing virtual reality computer games visiting virtual museums on the InternetWhich of these uses for virtual reality are possible now?You have two choices.Which one do you prefer?Why?1.A.You can go to California a

5、nd attend Stanforda world famous university this fall.B.You can take courses on line of Stanford at home and get a degree.2.A.You make a trip to Hong Kong with your family this weekend.B.You can use computer to travel around Hang Kong,that is to say,virtual travel.True or FalseTrue or False1.This we

6、ekend Tom will help Cathy finish a project on the history of the Internet.2.Cathy is more interested in virtual holiday than Tom.3.Tom will have a virtual reality holiday this weekend.FTF4.Virtual university is an interesting game on line instead of a real university.5.Virtual reality holidays spend

7、 less time than real holidays.6.You neednt go to the real place in virtual reality holidays but you can get real feeling of traveling there.7.The Science Museum on line doesnt exist in fact,just imagine it.TFTF Virtual reality holidaysVirtual universitiesTomCathyDoesnt understand.Finds it hard to im

8、agine.Feels interested but has doubts.Feels excited.Feels wonderful.Answer the questions.（P13）1.Why cant Cathy go out this weekend?She has to finish her project.2.Where is Tom planning to go?Hell go camping if the weather is good.3.Does Cathy have a programme for“virtual”holidays on her computer?No.

9、4.Does she really think she will have the chance to go on a world tour?No.5 What would Tom like to do with virtual reality?He would like to go to a world famous university.6 Why is Cathy so excited about the technology?Because she thought she would be able to go anywhere she liked.Voice your opinion

10、 What are the advantages and disadvantages of a virtual university?Save money to build the walls and teaching buildings.Anytime,anyplace It is convenient to attendMore comfortable learning environment Dont have to pay tuition Save transportation time Lower cost:download text material instead of buyi

11、ngAdvantages of a virtual university1.Cant learn and improve ones social skills 2.Nonverbal languages like gestures are important cues in FFC (Face-to-Face Communication)3.Cant feel the learning atmosphere and see the beauty of the environment.Disadvantages of a virtual universityLanguage Points1.ge

12、t in touch （with sb.）取得联系After a long holiday,the father got in touch with the lost son.长长的假期之后，父亲就与失散的儿子取得了联系。【拓展】lose touch with sb.与某人失去联系keep in touch with.与某人保持联系out of touch 失去联系in touch 联系中touch在这里可是名词啊！How could you _ each other again when you were separated?【2012南宁高一检测】A.get in touch with B

13、.be in touch withC.keep in touch with D.communicate【解析】选A。根据句意“你们分开后是怎样又联系上了”可知，强调的是无联系到联系的动作，所以选A。2.hang on=hold the line等会；别挂电话；坚持The line is busy,would you like to hang on?电话有人在打,请别挂断好吗?It is hard work,but if you hang on long enough，you will succeed.这是艰苦工作，但如果你坚持下去，你会成功的。【拓展】hang up 挂起来hang on to

14、 不出售，继续持有；紧握住hang about 闲荡，徘徊，逗留hang back 犹豫，踌躇，畏缩hang up 挂断(电话)【即学即练】If youll just a moment,Ill get it for you.A.hang onB.come on C.go on D.put on【解析】选A。句意：如果你暂时不挂断，我取来给你。hang on不挂断；come on加油；go on继续；put on穿上。3.be up to做，从事于(尤指做不好的事)be up to sb.to do sth.应由某人做某事be up to sb.由某人来决定be up to sth./doing

15、 sth.能胜任某事/做某事up to(数目)到之多；直到(职位)up to now到目前为止(用于现在完成时)The children are very quiet;I wonder what theyre up to.孩子们很安静，我不知道他们又在捣什么鬼。Its up to parents to teach their children manners.应由父母来教给他们的孩子礼仪。【即学即练】Who is it up _ decide whether to have a party or not,which is really annoying.【2012长沙高一检测】A.to for

16、 B.toC.for to D.to to【解析】选D。句意：由谁来决定是否举行晚会？考查介词及不定式。it is up to sb.to do sth.表示“由某人决定某事”，该句是其特殊疑问句形式。4.suggestion n建议，提议make/offer/give a suggestion提供一条建议ask for/call for a suggestion征求一条建议at/on sb.s suggestion根据某人的建议【拓展】由suggestion引导的同位语从句和表语从句中谓语动词须用“should动词原形”构成的虚拟语气，should可以省略。My suggestion is

17、that we should tell him.我的建议是我们应该告诉他。She made a suggestion that each worker(should)contribute one days pay.他建议每个工人捐献一天的工资。【即学即练】用所给单词的适当形式填空：The that shops on Sundays led to a heated discussion.【答案】suggestion should opensuggetion是可数名词啊！Objectives discover the differences between the first and second

18、 conditionals and their rules;use the second conditional to describe your ideal future life.1.Read the first 17 lines in the dialogue and find all the sentences with“if”2.Which sentence talks about a)unlikely situations in the future b)possible situations in the futurePair work:finish the following

19、sentences.Pay attention to the conditions given and the tenses you are going to choose.A.If it rains this weekend,well(Said in England where it often rains.)B.If it rained in the Sahara（撒哈拉沙漠）,it would(This would be most unusual.)A.If there is a nuclear war,well(The speaker is a pessimist.He believe

20、s that is probably to happen.)B.If there was a nuclear war,wed(The speaker is an optimist.He doesnt believe it will come true.)A.If you come to my country,youll have a good time.(Possible.)B.If you came from my country,youd understand us better.(Impossible.)A.If I am elected as a member of Parliamen

21、t（国会）,Ill(Said by a candidate.)B.If I ruled the world,Id(Imaginary.)Read the following sentences on Page 12 and see what you can discover?Part IIf its good,Dad,Mum and I will probably go camping.(L7-8)if I stay home,Ill help you with your project(L9-10)If you tell me some titles,Ill look for them in

22、 the library.(L12-13)If you go to the Science Museum website,youll find lots of good information.(L14-16)Part II if we had virtual reality holidays,we wouldnt have any problems with the weather.(L18-20)if they invented virtual reality holidays,Id go on an around-the-world tour.(L41-42)what would you

23、 like to do if someone gave you the chance?(L43-44)If clauseMain clause真实条件First conditional虚拟条件Second conditionalIf do/doeswill If did/werewould SummaryCompare Part 1 with Part 2Do the exercise 6 on page 13.1)What will you do if your computer doesnt work?2)Will you go out with me on Saturday night

24、if you finish the project?3)If you go to that website,you will find some interesting information.4)Will you go to that concert if it rains?5)She will buy a computer if she gets that job.6)I will give you the information if you telephone me tomorrow.7)What will you do if the weather is not good tomor

25、row?8)My sister will not go to London if she doesnt pass her exams.Do the exercise 9 on page 13.1.If you surfed the Internet,you would find interesting information.2.If you did not have a try,people would laugh at you.3.If I took part in the game,I would win.4.If you told the police,they would help

26、you to get out of the trouble.5.If you used the Internet,you would make new friends.Chained talkExample:S1:If I were a millionaire,I would buy a new house.S2:If I had a new house,I would make a room into a cinema.S3:If I had a cinema at home,I would watch movies every day.S4He acted as if nothing ha

27、d happened.He talked as if he were an ET.Their lips were moving as if they were eating something.He was so pessimistic as if there would be a nuclear war.as if总结：as if从句表达与客观事实不相符的情况时，从句使用所需要的过去时态。Wish的宾语从句动词wish后接宾语从句时，从句谓语要用虚拟语气。若要表示与现在事实相反的愿望，从句谓语用一般过去时或过去进行时；若表示与过去相反的愿望，从句谓语用过去完成时或would/could+ha

28、ve+过去分词；若表示将来没有把握或不太可能实现的愿望，用would(could)动词原形。如：I wish I were not so busy.但愿我不那样忙碌。She wished she had stayed at home.她后悔的是她当时要是留在家里就好了。I wish you would go with us tomorrow.要是你明天同我们一起去就好了。对将来对现在对过去主句从句if过去were to should do过去had donewould+dowould have donewould+doFirst Conditionaldo/does will do条件状语从句

29、1.要是你没帮我的话,我就没命了。If you _,I _._ helped me,I would have died.2.要是他更努力点，考试他就过了。If he _,he _._,he would have passed the exam.3.你要是赶快是会搭上车的。If you _,you _.lost my life.hadnt helped mewould have diedHad you nothad worked harderwould have passed the examHad he worked harderhurriedwould catch the bus4.要是明天

30、有雨，我就不去找你了。If it _,I _._,I wouldnt go to see you.5.真希望我帮了你。（wish）How I wish _.6.他大谈特谈香港，好像他去过一样（as if）He talks a lot about H.K.as if _.I had helped youhe had been therewouldnt go to see youWere it to rain tomorrowshould rain tomorrowShould it rain tomorrowwere to rain tomorrowwish与将来事实相反，从句用情态动词过去式+

31、v.与现在事实相反，从句用过去式与过去事实相反，从句用过去完成时对将来对现在对过去主句从句if过去were to should do过去had donewould+dowould have donewould+doFirst Conditionaldo/does will do条件状语从句达标检测Homework 1.Try to remember the text of Lesson 2.Preview Lesson 4 and do the exercises.3.Try to design a website in a group of four.Cease to struggle and you cease to live.生命不止，奋斗不息。