新视野大学英语第四册第四单元课件
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新视野大学英语4读写教程Unit4sectionB课件
Before visiting Japan you want to learn a bit Japanese. But your school has no professors of Japanese. What will you do?
That just sign up for the language course online offered by a school in another district or city is good idea.
1976 Gore began his political career in the House of Representatives as a congressman from Tennessee. During this term, he introduced a bill calling for the construction of a “data highway”.
Related Information
3. Telecommunications and Two Trends
Telecommunications, from Greek, means “communications at a distance”. The first trend: the incredible increase in the processing power of digital computers, namely, dramatic decreases in physical size, dramatic increases in complexity, speed and capacity. The second trend: the explosive growth in transmission capacity through the widespread use of optical fiber across continents and under oceans.
(精选幻灯片)新视野大学英语第四册第四单元课件
4
Telecommunications
❖Telecommunications, from Greek, means “communications at a distance”.
❖ The first trend: the incredible increase in the processing power of digital computers, namely, dramatic decreases in physical size, dramatic increases in complexity, speed and capacity.
❖ 无线传播系统
systems (L. 9)
❖ the Information Age (L.10) ❖ 信息时代
❖
a spider’s web of digital and wireless communication links
❖
一个蜘蛛网般的数字和无 线通信网络
(L. 11) 2
Proper names
❖Optical fiber (or “fiber optic”) often refers to the medium and the technology associated with the transmission of information as light pulses(光脉 冲) along a glass or plastic wire or fiber. Optical fiber carries much more information than conventional copper wire and is in general not subject to electromagnetic电磁的 interference and the need to retransmit signals. Most telephone company long-distance lines are now of optical fiber.
Telecommunications
❖Telecommunications, from Greek, means “communications at a distance”.
❖ The first trend: the incredible increase in the processing power of digital computers, namely, dramatic decreases in physical size, dramatic increases in complexity, speed and capacity.
❖ 无线传播系统
systems (L. 9)
❖ the Information Age (L.10) ❖ 信息时代
❖
a spider’s web of digital and wireless communication links
❖
一个蜘蛛网般的数字和无 线通信网络
(L. 11) 2
Proper names
❖Optical fiber (or “fiber optic”) often refers to the medium and the technology associated with the transmission of information as light pulses(光脉 冲) along a glass or plastic wire or fiber. Optical fiber carries much more information than conventional copper wire and is in general not subject to electromagnetic电磁的 interference and the need to retransmit signals. Most telephone company long-distance lines are now of optical fiber.
新视野大学英语4 unit 4 ppt
Information Superhighway
• A name first used by former US vise-president AL Gore for the vision of a global,high-speed communication network that will carry voice, data, video ,and other forms of information all over the world, and that will make it possible for people to send e-mail ,get up-to-the-minute news, and access business ,government and educational information.
• •
Para5
• Compare that with the mainland of China. Over the next decade, it plans to pour some $100 billion into telec omm unica tio ns equipm e nt. I n a way, China's backwardness is an advantage, because the expansion occurs just as new technologies are becoming cheaper than copper wire systems. By the end of 1995, each of China's provincial capitals except for Lhasa will have digital switches and high-capacity optical fiber links.This means that major cities are getting the basic infrastructure to become major parts of the information superhighway superhighway, allowing people to log on to the most advanced services available.
新视野大学英语第四册第四单元
Advantages:
1. it’s very convenient for us to communicate with everyone and make various friends to help each other.
2.Properly playing some games can stretch our brain.
optical fiber cable:
An optical fiber cable is a cable containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed. Different types of cable are used for different applications, for example long distance telecommunication, or providing a high-speed data connection between different parts of a building.
There are two main types of material used for optical fibers: glass and plastic. They offer widely different characteristics and find uses in very different applications. Generally, plastic fiber is used for very short range and consumer applications, glass fiber is used for short/medium range (multi-mode) and long range (single-mode) telecommunications. Optical cables transfer data at the speed of light in glass. This is the speed of light in vacuum (真空) divided by the refractive index (折射率）of the glass used, typically around 180,000 to 200,000 km/s, resulting in 5.0 to 5.5 microseconds（微秒） of latency per km. Thus the round-trip delay time for 1000 km is around 11 milliseconds(毫秒).
新视野大学英语(第三版)视听说教程4 Unit 4
The happiest thing that has happened to me recently is that I met my best friend. She was in another city, and we hadn’t seen each other for two years. Last month, when we finally met, we chatted so much and shared a lot of our lives. So, that is the happiest moment I have had recently.
to society.
• Water and air pollution affects the health of humans,
animals and plants, resulting in cancer, death, birth
defects, severe genetic change, etc.
The signs and symptoms of depression include ...
To get a good grade in the writing course,, firstly …; Secondly, …,
Thirdly, ...
When we hear the underlined phrases above, we can know that
supporting details.
For example:
Three reasons why students did not score high on this test are as
follows.
to society.
• Water and air pollution affects the health of humans,
animals and plants, resulting in cancer, death, birth
defects, severe genetic change, etc.
The signs and symptoms of depression include ...
To get a good grade in the writing course,, firstly …; Secondly, …,
Thirdly, ...
When we hear the underlined phrases above, we can know that
supporting details.
For example:
Three reasons why students did not score high on this test are as
follows.
新视野大学英语第三版第四册第四单元sectionA宣讲专题培训课件
Lead-in
Short Answer Questions
2. What do you think of the relationship betweenman and nature?
Tips Man has the “blood ties” with nature. Mankind has to depend on nature for his food, medicine, shelter, clothing and other necessities to be able to survive. However, due to industrialization and economic development, man does not live in harmony with nature anymore. While transforming nature for his own sake, man has been over exploring and using the natural resources, resulting in such problems as global warming, soil erosion, shortage of fresh water, and sandstorms. Man has suffered a lot from the problems.
Section A
Achieving sustainable environmentalism
Contents
Warming-up Activities Text Study Language Application Summary
Section A
Achieving sustainable environmentalism
新视野大学英语第四册课件UNIT4
1. long for: have an intense desire for
（Title） The whole nation longed for peace after many years of war. 经过多年战争后，全民族都渴望和平。 The children are longing for the holidays. 孩子们盼望放假。
2. be supposed to: (Para. 1)
1)be generally believed or expected to be or do
2) be expected or required to do or be sth. according to a rule, a custom, an She’s supposed to have five hundred pairs of shoes. arrangement, etc. 据信她有500双鞋。 You’re supposed to buy a ticket, though not many people do. 尽管没有多少人买票，但你应该买。 It’s supposed to be a great movie. 据说这部电影不错。 You’re supposed to ask the teacher if you want to leave the classroom. 如果你要离开教室，得跟老师说。
Part I
General images of welfare clients and welfare caseworkers under the present system.
Main Ideas
Welfare clients are believed to cheat more money out of the present welfare system.(Para.1) There are welfare clients who choose to live a life of complete honesty. (Para.2) The relationship between welfare clients and caseworkers is tense. (Para.3)
新视野大学英语第四册第四课课件U04-B
Ⅰ. Reading Skills: Recognizing Paragraph Patterns (I)
In our New Horizon College English series, we have been analyzing every Passage A from Unit 1, Book 1 up to now. This kind of practice has three purposes: 1. coming to a better understanding of the main ideas of the reading passages; 2. understanding text structure; 3. helping us construct well-organized paragraphs or short compositions.
Ⅰ. Reading Skills: Recognizing Paragraph Patterns (I)
Back
What is the main idea of the paragraph? Wireless demand and usage have exploded across the entire Latin America. What are the reasons to support this main idea? Wireless phone service providers are making a lot of money out of information technologies.
Recognizing Paragraph Patterns (I) Practice
Exercises
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信息高速公路 进入（计算机）系统；登 录/退出 电子数据/电子（信号） 无纸化交易 无线电发射塔 翻山越岭架设线路 无线电话 固定线路
3
Telecommunications What telecommunications devices are available in your life? What does telecom mean to you?
11
Answers
Conditions in the Six Countries and Regions
Hungary (Para. 7)
To overcome the problem of funding and to speed the import of Western technology, Hungary sold a 30% stake in its national phone company to two western companies, which Hungary finds worthwhile. Latin America (Para. 8)
13
Fillvantages Problems Solutions Results
Russia China
Hungary
Latin America Thailand
Vietnam
14
Detailed Reading
…should greatly boost living standards… (L. 1) 提高生活水准
People in Thailand are happy to accept the new technologies as they can make better use of all the time they spend stuck in traffic with mobile phones.
Vietnam (Para. 10)
Vietnam plans to invest more in optical fiber digital switches, and transmission systems to keep pace with anyone in Asia in new tech for decades.
5
optical fiber Optical fiber (or “fiber optic”) often refers to the medium and the technology associated with the transmission of information as light pulses(光脉 冲) along a glass or plastic wire or fiber. Optical fiber carries much more information than conventional copper wire and is in general not subject to electromagnetic电磁的 interference and the need to retransmit signals. Most telephone company long-distance lines are now of optical fiber.
satellite telephone & mobile phone digital TV radio Internet and email
fax
4
Telecommunications Telecommunications, from Greek, means “communications at a distance”. The first trend: the incredible increase in the processing power of digital computers, namely, dramatic decreases in physical size, dramatic increases in complexity, speed and capacity. The second trend: the explosive growth in transmission capacity through the widespread use of optical fiber across continents and under oceans.
Answers
Conditions in the Six Countries and Regions
Russia (Para. 4)
Russia needs to invest in information technology a huge amount of money to update its ancient telephone system but it is unlikely due to a poor economy. The mainland of China (Para. 5~6) China, taking advantages of its backwardness, invests a huge amount of money to become major parts of the information highway, and Shanghai plans telecom networks as powerful as those in Manhattan.
6
Information Age When we say that we live in the information age, we mean that we live in a time when information is very important and easy to get. The information age is an era of fundamental and global change in intellectual, philosophical, cultural and social terms. Today’s information age began with the telegraph. It was the first instrument to transform information into electrical form and transmit it reliably over long distances. New techniques of encoding and distributing digital information are pacing the spread of the information age throughout society.
Proper names
the information superhighway (L. 39) log on (to)/ log out/off (L. 40) the electronic data (L. 42) /electron (L. 73) paperless trading (L. 43) radio tower (L. 53) string lines across mountain ridges (L. 53) wireless call (L. 55) fixed lines (L. 56)
7
Information superhighway
A name first used by former U.S. Vice President Al Gore for the vision of a global, high-speed communications network that will carry voice, data, video, and other forms of information all over the world, and that will make it possible for people to send e-mail, get up-to-the-minute news, and access business, government and educational information.
Different from other countries, wireless phone service providers in Latin American countries are making money.
12
Answers Conditions in the Six Countries and Regions Thailand (Para. 9)
8
Global Reading
Text Analysis
Introduction + Question + Sample Solutions + Conclusion
9
Global Reading
Text Analysis
Fast Reading Part I (Para. 1~2) A New Technology and Its Advantages • What’s the new technology? • What are its advantages? (6 advantages) Part II (Para. 3) What’s in Suspense • What’s the problem developing countries are facing? Part III (Para. 4~10) What’s in Certainty • Communications will be a key factor separating the winners from the losers. • What are the conditions in the six countries and regions? Russia, the mainland of China, Hungary, Latin America, Thailand, Vietnam. (one-sentence summary only) Part IV (Para. 11) A Brilliant Prospect 10
3
Telecommunications What telecommunications devices are available in your life? What does telecom mean to you?
11
Answers
Conditions in the Six Countries and Regions
Hungary (Para. 7)
To overcome the problem of funding and to speed the import of Western technology, Hungary sold a 30% stake in its national phone company to two western companies, which Hungary finds worthwhile. Latin America (Para. 8)
13
Fillvantages Problems Solutions Results
Russia China
Hungary
Latin America Thailand
Vietnam
14
Detailed Reading
…should greatly boost living standards… (L. 1) 提高生活水准
People in Thailand are happy to accept the new technologies as they can make better use of all the time they spend stuck in traffic with mobile phones.
Vietnam (Para. 10)
Vietnam plans to invest more in optical fiber digital switches, and transmission systems to keep pace with anyone in Asia in new tech for decades.
5
optical fiber Optical fiber (or “fiber optic”) often refers to the medium and the technology associated with the transmission of information as light pulses(光脉 冲) along a glass or plastic wire or fiber. Optical fiber carries much more information than conventional copper wire and is in general not subject to electromagnetic电磁的 interference and the need to retransmit signals. Most telephone company long-distance lines are now of optical fiber.
satellite telephone & mobile phone digital TV radio Internet and email
fax
4
Telecommunications Telecommunications, from Greek, means “communications at a distance”. The first trend: the incredible increase in the processing power of digital computers, namely, dramatic decreases in physical size, dramatic increases in complexity, speed and capacity. The second trend: the explosive growth in transmission capacity through the widespread use of optical fiber across continents and under oceans.
Answers
Conditions in the Six Countries and Regions
Russia (Para. 4)
Russia needs to invest in information technology a huge amount of money to update its ancient telephone system but it is unlikely due to a poor economy. The mainland of China (Para. 5~6) China, taking advantages of its backwardness, invests a huge amount of money to become major parts of the information highway, and Shanghai plans telecom networks as powerful as those in Manhattan.
6
Information Age When we say that we live in the information age, we mean that we live in a time when information is very important and easy to get. The information age is an era of fundamental and global change in intellectual, philosophical, cultural and social terms. Today’s information age began with the telegraph. It was the first instrument to transform information into electrical form and transmit it reliably over long distances. New techniques of encoding and distributing digital information are pacing the spread of the information age throughout society.
Proper names
the information superhighway (L. 39) log on (to)/ log out/off (L. 40) the electronic data (L. 42) /electron (L. 73) paperless trading (L. 43) radio tower (L. 53) string lines across mountain ridges (L. 53) wireless call (L. 55) fixed lines (L. 56)
7
Information superhighway
A name first used by former U.S. Vice President Al Gore for the vision of a global, high-speed communications network that will carry voice, data, video, and other forms of information all over the world, and that will make it possible for people to send e-mail, get up-to-the-minute news, and access business, government and educational information.
Different from other countries, wireless phone service providers in Latin American countries are making money.
12
Answers Conditions in the Six Countries and Regions Thailand (Para. 9)
8
Global Reading
Text Analysis
Introduction + Question + Sample Solutions + Conclusion
9
Global Reading
Text Analysis
Fast Reading Part I (Para. 1~2) A New Technology and Its Advantages • What’s the new technology? • What are its advantages? (6 advantages) Part II (Para. 3) What’s in Suspense • What’s the problem developing countries are facing? Part III (Para. 4~10) What’s in Certainty • Communications will be a key factor separating the winners from the losers. • What are the conditions in the six countries and regions? Russia, the mainland of China, Hungary, Latin America, Thailand, Vietnam. (one-sentence summary only) Part IV (Para. 11) A Brilliant Prospect 10