课件20张PPT。What would life be like without them?Video showLiving with technologyReading: TV and audio devices --- a reviewHow many subtitles are there in the passage?Tsubtitle(1)Reading strategysubtitle(3)subtitle(2)subtitle(4)subtitle(5)What are the subtitles?
Guess according to the title:What does the passage talk about?
3._______history of audio devices
4.Tape recorders and players
5.________goes digitalTVAudio devicesEarlymodernEarlySound1.______ history of TVage: Cable TV, satellite TV, digital TV,… 2.The _______Draw a picture to show the structure of the passage. T=title ①=subtitle 1 ②=subtitle 2
③=subtitle 3 ④=subtitle 4 ⑤=subtitle 5 T①②③④⑤1. When did regular public TV broadcasting begin around the world?
2. What is WebTV?
3. What was invented in 1954?It began on 11 May 1928 in New York and in London on 20 August 1929.It is the TV set combined with the World Wide Web.The cassette recorder.Listening:True or false exercisesThomas Edison made the first recording
of a human voice.
2. Until 1972, most people used black-and-white TV.
3. Satellite TV is delivered with greater
clarity(清晰） than digital TV.
4. The first record player was invented
before 1877.
5. Transistor technology was first used to
receive radio programmes, and then to
develop cassette recorders.
6. CDs were invented about ten years before the MD player was invented.
7. MP3 technology began in Germany in 1987.Digital TVsatellite TVaftermilitary usefor(by _______ of equipment)______history of TVtypes(in order of______ ) Early history of____________
_________________________
______ goes digitalTVAudio
devicesEarlytimemodernSoundage: Cable TV, satellite TV, digital TV,… The _______audio devicesTape recorders and players How is the passage organized _______________.
A. by paragraphs B. in chronological order
C. by concepts D. by sub-topicsStructure以时间顺序Careful-reading (Years & events) History of TV:
1925 1948 1951 1962 1989 1996history of TV19251948Colour broadcasts began in the USA.Satellites began to be used to broadcast TV.198919961. When and where was the first long-distance TV broadcast made?
A. In 1925 in the USA. B. In 1926 in the UK.
C. In 1928 in the UK.
D. In 1928 in both the USA and the UK.
2. Who might be the inventor of the first TV?
A. Vladimir Zworykin from Russia.
B. Philo Farnsworth in the USA.
C. John Logie Baird from Scotland.
D. It remains uncertain.
3. How many countries have put digital TV into operation according to the passage?
A.Only one. B. Already two.
C. At most three. D. At least four. Years & events Audio devices
1877 1948 1954 1958 1982 1987 1992Invention of transistor led to the development of cassette recorders.First recording of a human voice was made.1958First CDs produced by using digital technology were made available.Development of MP3 technology started in Germany.Development of MD player began.3 American scientists invented the transistor.audio devices4. Who might have attributed to the development of the Walkman?
A. Two Japanese engineers.
B. Three American scientists.
C. Thomas Edison.
D. Emile Berliner.
5. What is the main factor that causes the spring up of music websites all over the Internet?
A. The popularity of Walkman.
B. The development of the MD player.
C. The development of MP3 technology.
D. The wide use of Discman.
Task-reading任务型阅读contributionswirelessfollowedhouseholdsbeganmarketbetteravailabletechnologyinventorConsolidation The first public showings of _______ TV transmissions were made in 1925. It took another three years ______ there was any _______ public broadcasting, first in the USA and in the _________ year in Britain. People must have found it quite a _________ when color TV was first ________ in 1929. However, _______ the next 65 years, people would be able to choose what to watch from a ________ of 200 channels because of digital TV. It is ________ that in 1998, 66 percent of __________ in the USA had cable TV.
The _________ of audio devices started with Thomas Edison’s first _________, and then moved on to different kinds of tape recorders, and finally CDs, which were __________ in the 1980s.It may be surprising that Germany is the _________ of MP3, not Japan or the USA. These things all bring great ____________ and delight to people’s lives.wirelessdelightbeforefollowingregularwithinshownvarietyhouseholdsreportedevolutionrecordingbirthplaceintroducedconvenience1.Discussion:Do you think high school students should use mobile phones at school? Why or why not?2.Interview: Please interview your partner to get to know when his/her family bought different electronic devices.meet people’s needs.
have improved people’s lives to some degree.
radiation from them may be harmful to people’s health.
A large amount of waste, which is harmful to the environment. to sum up
Read the text and try to memorize the words and expressions.
Do Language practice on page 102.Homework:
