北师大高一英语UNIT4[上学期]
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文档简介
课件24张PPT。Lead-in
Ask and answer
----What can we do on the Internet?Unit4CyberspaceEx. 1 Which of the films and books
mentioned on this screen have you seen or read?
Which of these pictures have already come true?
Which of these pictures do you think come true
in your life time? The Day After TomorrowGlobal warming
World floodingArtificial Intelligence (A.I )Robot
Artificial humanFrom The Earth To The Moontravelling to the moonStar WarsWars in spaceThe TerminatorRobot
Artificial humanWaterworldGlobal warming
World floodingEx. 2 Listen to four experts. Which predictions are they discussing? Use the key words to help you.1. making artificial humans2. flooding in different countries3. time travel4. a virus develops which we have no power to stopKey Words
robot artificial human cyberspace planet’s climate
global warming world flooding time travel
virtual reality virus1 Tomorrow’s World----The future of cyberspace② look at the title of the article. Predict which of these topics do you think it will mention.
the Internet artificial human time travel
Robots global warming virtual reality
③ Then read the article quickly to check your guess.
√√④ Read the article again and match the vocabulary from the text in the box below with the definitions.1. a person who enters other people’s computer programmes in secret
2. the use of computers to make situations feel and look real
3. have an accident by violently hitting something
4. someone who does terrible things to harm countries, governments and people
5. computer system that allows millions of people around the world to share information
6. a terrible situation in which everything goes wrongHacker ,chaos,
terrorist ,the Net (Internet),
virtual reality, crash
Hacker chaosterroristthe Internetvirtual realitycrash1. a person who enters other people’s computer programmes in secret6. a terrible situation in which everything goes wrong4. someone who does terrible things to harm countries, governments and people5. computer system thath allows millions of people around the world to share information2. the use of computers to make situations feel and look real 3. have an accident by violently hitting somethingsome pessimistic expertssome optimistic expertssome other expertsterrorists may ①attack the world’s computers , ②cause chaos, and ③make planes and trains crash.①we are going to see a huge growth in shopping on the Internet. ②we will get entertainment from the Net and television will probably disappear. ③The mail service may also disappear with the increasing use of e-mail.①virtual reality will become a part of modern life. ②I see people living and working in a virtual world. We will work in virtual offices, shop in virtual supermarkets, we will even study in virtual schools.Voice your opinion
⑥ Do you feel pessimistic or optimistic about the future of the Internet? Why?
Example I’m optimistic about the future of the Internet, because the Net has become a part of our life. We do many things through it, such as …Homework
Language power p.55 Ex. 5-6affect vt. 影响
effect n.[c/u] 效果，作用
e.g. The noise from the street affected our work.
have effect on sth. 对…产生效果
have a good/bad effect on 对…有好/坏的效果
offer vt. 提供，提议
offer sth e.g. He offered a bribe to the manager.
offer sb. sth. 对某人提供某物 e.g. She offered him a cup of tea.
offer to do 愿意做某事 e.g. He offered to help us.
3. It is clear that …= it is obvious that…
e.g. it is clear that in the next few years the Earth’s climate will change.
句子的结构是it is +adj.+that~，其中it 是形式主语，真正的主语是由that 引导的主语从句。
4. as if =as though 仿佛，好象
e.g. It sounds as if she’s been really ill.
as if 之后既可以用陈述语气，也可以用虚拟语气。如果描述的情景是真实的或可能的，可以用陈述语气；如果描述的是与事实完全相反，常用虚拟语气。（从句用过去时或过去完成时)
e.g. It looks as if it’s going to rain,
It looks as if we shall have to do the work ourselves.
She always talks to me as if she was my sister.
he walked slowly as if he had hurt his leg.
主句 从句
一般现在时 →一般过去时
一般过去时 →过去完成时Grammar----will/be going to will 1.根据说话者个人的见解和观点,对未来做出预言 e.g. He’ll make a good doctor. 2.在说话时突然做出的决定 e.g. I’ll help you with the housework. I’ll always be your friend. 3.表示要求或邀请 e.g. Will you wait for me ? be going to 1. 根据现在的情景，预计不久肯定发生的事情 e.g. Look at those clouds,it’s going to rain. 2. 打算去做某事或事先决定了的事情 e.g. I’m going to study medicine. to be going to 与will
1）表意图时，to be going to表示经过事先思考的意图，而will表示说话时临时决定的意图。试比较：
海伦的自行车车胎漏气了.
Helen：My bicycle has a flat tyre. Can you repair it for me? Father：Okay, but I can’t do it now. I’ll repair it tomorrow.
行，但我现在做不了。我明天帮你补。（说话时决定）
后来，海伦的妈妈又跟她丈夫说
Mother：Can you repair Helen’s bicycle? It has a flat tyre. Father：Yes, I know. She told me. I’m going to repair it tomorrow.
我知道。她已告诉我了我准备明天给她补。(事先已决定)
2）表预测时，to be going to强调有迹象表示某件事将发生；而will则表示说话人个人认为或相信某件事将要发生。试比较：
A．The lift is going to break down.
电梯就要出故障了。（有迹象，如发出怪声等。）
B．The lift will break down soon.
电梯很快要发生故障。（说话人的意见）
A．He is going to get better.
他的病就要好起来。（有迹象，如体温下降等。）
B．He will get better.
他的病会好起来的。（认为最终会好起来的。）
[review] be about to do “眼下，马上要做某事”,不能用表示该动作发生时间的状语
e.g. The bridegroom is about to get married.
The party is about to begin.
Homework
1. Language power p.54-55 Ex.1.2.4.
☆2. Recite “The future of cyberspace”
Ask and answer
----What can we do on the Internet?Unit4CyberspaceEx. 1 Which of the films and books
mentioned on this screen have you seen or read?
Which of these pictures have already come true?
Which of these pictures do you think come true
in your life time? The Day After TomorrowGlobal warming
World floodingArtificial Intelligence (A.I )Robot
Artificial humanFrom The Earth To The Moontravelling to the moonStar WarsWars in spaceThe TerminatorRobot
Artificial humanWaterworldGlobal warming
World floodingEx. 2 Listen to four experts. Which predictions are they discussing? Use the key words to help you.1. making artificial humans2. flooding in different countries3. time travel4. a virus develops which we have no power to stopKey Words
robot artificial human cyberspace planet’s climate
global warming world flooding time travel
virtual reality virus1 Tomorrow’s World----The future of cyberspace② look at the title of the article. Predict which of these topics do you think it will mention.
the Internet artificial human time travel
Robots global warming virtual reality
③ Then read the article quickly to check your guess.
√√④ Read the article again and match the vocabulary from the text in the box below with the definitions.1. a person who enters other people’s computer programmes in secret
2. the use of computers to make situations feel and look real
3. have an accident by violently hitting something
4. someone who does terrible things to harm countries, governments and people
5. computer system that allows millions of people around the world to share information
6. a terrible situation in which everything goes wrongHacker ,chaos,
terrorist ,the Net (Internet),
virtual reality, crash
Hacker chaosterroristthe Internetvirtual realitycrash1. a person who enters other people’s computer programmes in secret6. a terrible situation in which everything goes wrong4. someone who does terrible things to harm countries, governments and people5. computer system thath allows millions of people around the world to share information2. the use of computers to make situations feel and look real 3. have an accident by violently hitting somethingsome pessimistic expertssome optimistic expertssome other expertsterrorists may ①attack the world’s computers , ②cause chaos, and ③make planes and trains crash.①we are going to see a huge growth in shopping on the Internet. ②we will get entertainment from the Net and television will probably disappear. ③The mail service may also disappear with the increasing use of e-mail.①virtual reality will become a part of modern life. ②I see people living and working in a virtual world. We will work in virtual offices, shop in virtual supermarkets, we will even study in virtual schools.Voice your opinion
⑥ Do you feel pessimistic or optimistic about the future of the Internet? Why?
Example I’m optimistic about the future of the Internet, because the Net has become a part of our life. We do many things through it, such as …Homework
Language power p.55 Ex. 5-6affect vt. 影响
effect n.[c/u] 效果，作用
e.g. The noise from the street affected our work.
have effect on sth. 对…产生效果
have a good/bad effect on 对…有好/坏的效果
offer vt. 提供，提议
offer sth e.g. He offered a bribe to the manager.
offer sb. sth. 对某人提供某物 e.g. She offered him a cup of tea.
offer to do 愿意做某事 e.g. He offered to help us.
3. It is clear that …= it is obvious that…
e.g. it is clear that in the next few years the Earth’s climate will change.
句子的结构是it is +adj.+that~，其中it 是形式主语，真正的主语是由that 引导的主语从句。
4. as if =as though 仿佛，好象
e.g. It sounds as if she’s been really ill.
as if 之后既可以用陈述语气，也可以用虚拟语气。如果描述的情景是真实的或可能的，可以用陈述语气；如果描述的是与事实完全相反，常用虚拟语气。（从句用过去时或过去完成时)
e.g. It looks as if it’s going to rain,
It looks as if we shall have to do the work ourselves.
She always talks to me as if she was my sister.
he walked slowly as if he had hurt his leg.
主句 从句
一般现在时 →一般过去时
一般过去时 →过去完成时Grammar----will/be going to will 1.根据说话者个人的见解和观点,对未来做出预言 e.g. He’ll make a good doctor. 2.在说话时突然做出的决定 e.g. I’ll help you with the housework. I’ll always be your friend. 3.表示要求或邀请 e.g. Will you wait for me ? be going to 1. 根据现在的情景，预计不久肯定发生的事情 e.g. Look at those clouds,it’s going to rain. 2. 打算去做某事或事先决定了的事情 e.g. I’m going to study medicine. to be going to 与will
1）表意图时，to be going to表示经过事先思考的意图，而will表示说话时临时决定的意图。试比较：
海伦的自行车车胎漏气了.
Helen：My bicycle has a flat tyre. Can you repair it for me? Father：Okay, but I can’t do it now. I’ll repair it tomorrow.
行，但我现在做不了。我明天帮你补。（说话时决定）
后来，海伦的妈妈又跟她丈夫说
Mother：Can you repair Helen’s bicycle? It has a flat tyre. Father：Yes, I know. She told me. I’m going to repair it tomorrow.
我知道。她已告诉我了我准备明天给她补。(事先已决定)
2）表预测时，to be going to强调有迹象表示某件事将发生；而will则表示说话人个人认为或相信某件事将要发生。试比较：
A．The lift is going to break down.
电梯就要出故障了。（有迹象，如发出怪声等。）
B．The lift will break down soon.
电梯很快要发生故障。（说话人的意见）
A．He is going to get better.
他的病就要好起来。（有迹象，如体温下降等。）
B．He will get better.
他的病会好起来的。（认为最终会好起来的。）
[review] be about to do “眼下，马上要做某事”,不能用表示该动作发生时间的状语
e.g. The bridegroom is about to get married.
The party is about to begin.
Homework
1. Language power p.54-55 Ex.1.2.4.
☆2. Recite “The future of cyberspace”