高中英语 Unit4 lesson1 Tomorrows world精品教案 北师大版必修2.doc

lesson1 tomorrows world教案teaching aims:to practise using vocabulary of cyberspace.to practise using will and going to to talk and write about the future.teaching difficulties: to revise present simple and present continuous.teaching aids: computer and cassetteteaching procedures: . warming up compared to 20 years ago how do you think technology will change our lives?the teacher can give the following help:for example: go shopping on line.neednt carry cash and use credit cards.instead of going to the bank you can use a computer and a telephone to pay for bills.the teacher ask the two questions.1. imagine what happens in the next twenty years? 2. what do you think the computer gives us advantage or disadvantage for our life?of course the students will give various answers.look at the title of the article.which of these topics do you think it will mention?* the internet * artificial human * time travel * robots * global warming * virtual realityread the article quickly and check your guess to question 2 above.understanding the text1. with the development of computers, some scientists say it is likely that computer can give us disaster.2. the text infers to us that it is necessary for us to worry that the internet can do harm to us.3. some experts say in the future we will not go to school in the classroom like us.4. in the future many people live in the cyberspace.5. the text tells us you can do many things which dont exist in fact.6.in spite of the rapid development of internet, but many things cant disappear such as television and the mail keys: t f t t t f learning vocabularydo the exercise 4correct error1. in the last thirty years, the internet has grew rapid.2. terrorist may “attack” the worlds computers, cause chaos, make planes and trains crash.3. it is convenient order tickets from the internet.4. in 1983, there were only 200 computers connecting to the internet.5. this is clear that we can use internet to do all kinds of things at home.6. personal, im optimistic about the future of the internet.7. as society develops, computers will make our life much convenient.8. the mail service may also disappear as the increasing use of e-mail. keys: 1. rapidly 改为 rapid 2. make前加and 3. order 前加to 4. connecting改为connected 5. this 改为it 6. personal改为personally 7. much 改为more 8. as 改为withdiscussingwhat possible changes do some experts believe the internet can bring to our lives?why are some experts pessimistic about the future?we can feel convenient, we can do all kinds of things from the internet at home, such as buy books, find out about holiday offers, book tickets and so on.some traditional things will disappear.we may live in a virtual world.hacker can get into the computers of banks and government so that change data or steal away important information.terrorists will attack the worlds computers, cause chaos, make planes and trains crash even and cause nuclear war.voice your opiniondo you feel pessimistic or optimistic about the future of the internet? why?language points1. in 1983, there were only 200 computers connected to the internet.= which were connected to the iputer 和connect 是被动关系,因此connected to 是过去分词做定语来修饰computer,相当于一个定语从句。it is surprising that there were 3oo gold coins buried underground. which were buried underground.真是令人惊奇，地下埋了300 枚金币。there are so many people watching the big fire in the street.=who watched the big fire in the street.people 和watching 是主动关系watching 是现在分词做定语表主动来修饰people 相当于定语从句。2.some experts are pessimistic about the future.一些科学家对（计算机主宰的）未来表现出悲观的态度。be pessimistic/optimistic about 对悲观/乐观im rather pessimistic about the present situation.我对目前的局势感到悲观。3. it is clear that we are going to see an explosion of shopping on the internet.很显然，不远的将来我们就会看到网上购物的狂潮。it作形式主语，真实主语是 that引出的主语从句。 that we are going to see an explosion of shopping on the internet is clear.it is clear that in the next few years the earths climate will change.= that in the next few years the earths climate will change.4. .the use of computers with sounds and pictures that make you feel as if you are in a real situation.(虚拟世界)是计算机通过声音和图像模拟现实，以使人感到仿佛置身于一个真实的空间。as if 连词，仿佛， 好像it sounds as if shes been really ill.听上去好像她真的病了。5. we have to take immediate action.我们得马上采取行动。take action 采取行动。we must take actions to prevent the spread of disease. 我们必须采取行动防止疾病的传播。 grammarbefore doing the exercise turn to page 92 with the help of the teacher students learn grammar