课件26张PPT。
TV and audio devices : a review
(II) The structure of the text:
TV
Audio devices
Early history of TVThe modern age: cable TV, satellite TV, digital TV Early history of audio devicesTape recorders and playersSound goes digital(in order of time)(by type of equipment)Listen to the tape and work out the timeline for the development of audio devices.Complete the following table.Audio deviceThe first recording of a human voice was made.
The first tape recorders were made.
Three American scientists invented the transistor.
Cassette recorders were developed.
The first LPs came onto the market.
The Walkman was introduced.
The first CDs produced by using digital technology were made available.
Walkman was added to the Oxford English
dictionary./Discman was born.
Development of MP3 technology started in
Germany.
The MD player was developed.Listen to the passage again and judge whether the following statements are true or false.Thomas 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 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 TVafter for military useLanguage points
II
1. At that time, the record player had to be wound up by hand and only played a record for two minutes. (lines 31-32)wind n. 风,气流, 打嗝
wind v.(winded, winded): cause sb. to be out
of breath
wind v. (wound, wound): to turn or twist
We were winded by the steep climb.
The nurse wound a bandage around my finger
so that bleeding could be stopped.
Remember to wind the clock every night before
you go to bed if you do not want it to stop.wind down :
1)To diminish gradually in energy, intensity, or scope:
渐减:能量、强度或范围上渐渐减少
e.g. The party wound down as guests began to leave.
2)To relax; unwind. 放松;松弛
e.g. This year is rather busy for me---I need a holiday to wind down.
wind up :
1)To come or bring to a finish; end: 结束:
e.g. Before I wind up, there are two more things to say.
2)To put in order; settle:把…料理停当;处理:
e.g. She wound up her affairs before leaving the country.
3) Informal To arrive in a place or situation after
or because of a course of action:
e.g. He took a long walk and wound up at the edge of town.
He always overspent and wound up in debt.
4) cause sb. to reach a high level of excitement
e.g. He gets so wound up when he’s arguing.2.They bought the patent and applied the technology to create the transistor radio. (lines39)1) apply …to… : (1) put … into use
(2) have sth to do with
我们应该把理论运用到实践中去.
We should apply theory to practice.
别担心那件事于你无关.
Don’t worry, that matter does not apply to you.
apply oneself to sth./doing sth. : devote oneself to sth.
那个来自中国的交换学生专心于学习英语.
The exchange student from China applied herself to learning English.
apply for : make a formal request
从牛津大学毕业后, Hoffmann申请在联合国供职.
After Hoffmann graduated from Oxford University, he applied for a post in the UN.technology, technique
With the development of science, people today can enjoy a high level of ____________.
They admired the famous pianist --- Lang lang’s perfect _____________.technologytechnique3. …and in 1988, for the first time ever, people were demanding more CDs than Lps (line 49)
demand (n. v.)need, to need in order to be successful
demand+n/pronoun/to infinitive/ object clause(subjunctive mood)教师的工作需要极大的细心和耐心.
她要求和经理谈一谈.
他要求将一切都告诉他.He demands that he (should) be told
everything.
The work of a teacher demands great care and patience. She demanded to speak to the manager.
4. This is like a mini CD player but can also record music and very easy to carry, being very small, as the name “mini” indicates. (line 50)1) be easy to carry: be + adj. + to do ( 不定式主动表被动 )
站在那里的那个人和容易相处.
The man who is standing there is easy to get along with.
这把椅子坐上去很舒服.
The chair is comfortable to sit on.
2) being very small : 现在分词做状语, 表原因.
由于不想让病人紧张, 医生没有向他解释他病情的严重.
Not wanting to make the patient nervous, the doctor didn’t explain the seriousness of his sickness.
3) as the name “mini” indicates: 非限制性定语从句, as 是关系代词, 在从句中做定语,指代“being very small”
As might be expected, John was admitted to the university.
The pen you are using is the same as I bought yesterday.
that5. …that major corporations are taking over
the portable music player market with MP3
players. (Line 55-56)take over
hand over The son _________ the restaurant from
his father.
Mike’s father ____________ his restaurant to Mike.took overhanded overtake over take in take up take on
take down take back take off take awayCould you help me to _____ the curtain ____.
Two hamburgers and chips ___________ , please!
The plane ___________ at 14:30 every day.
Her eyes _______a hurt expression after my words.
Has the country ______________by enemies?
The cabinet _________ much room in my bedroom.
We only ______goods _____if customers
find quality problems within a week.
Don’t ___________ by his charming manner,
he’s completely rude.takedownto take awaytakes offtook onbeen taken overtakes uptakebackbe taken in6. the popularity of MP3 has increased to such a degree that… (lines 53-56)degree a point on an imaginary line used for measuring or comparing qualities, feeling, abilities, etc.孩子的能力高低各不相同.
对他们能信任到什么程度?The children have different degrees of ability.
To what degree can they be trusted?
7. Because of the popularity of MP3 players, music websites have sprung up all over the Internet …(lines 57-58)spring(sprang,sprung) v. to grow or to start up quickly
spring up 突然出现,涌现,迅猛发展
Many new businesses have sprung up with the development of the Internet.
The problem sprang up very suddenly.spring n.春天;泉水;弹簧8. Germany was the birthplace of MP3,
not Japan or the USA as I had assumed
they would be. (Page 5)vt. 1)accept sth. as true before there is a proof
在这种情况下,我们无法做任何猜测
e.g. We can’t assume anything in this case.
2)pretend
她假装与这个案件无关.
e.g. She assumed to be innocent of this case.
3)undertake; take on
他下月开始任职.
e.g. He assumes his job next month.
assumption n.Part D: Match the following words with
the correct definitions.review
uncertain
superior
questionnaires
wound up
patent
portable
demandingable to be carried
asking for sth, firmly
a written list of questions for
finding information or opinions
not sure, feeling doubt about sth.
a report on sth. that shows a
sequence of events
a paper that proves you are the
only person or company able to
produce a certain product.
made to move around itself or sth.
else.
h. better________________________edhcgfabPart E:Fill in the blanks with words given in the box.broadcasting Germany households recording 200
recorders wireless compact Britain 65I was really surprised to find out that the first public
showings of (1)__________ TV transmissions took
place way back in 1925. It took another three years
before there are any regular public(2)____________,
first in the USA and in the following year in(3)______.
Personally,I think people must have found it quite
a delight when colour TV was first broadcast in 1929.
However, within the next (4)_________ years, people
would be able to choose what to match from a variety
of (5)_________ different channels because of cable
TV. It is reported that in 1998, 66 per cent of
(6)____________ in the USA had cable TV.wirelessbroadcastingBritain65200householdsThe other information I got was about the
evolution of audio devices, starting with
Thomas Edison’s first (7)__________, then
moving on to different kinds of tape
(8)__________ and finally CDs (meaning
(9)__________ discs), which were introduced
in the 1980s. I was also really surprised to
learn that (10)___________ was the birthplace
of MP3, not Japan or the USA as I had
assumed they would be. These things all
bring great convenience and delight to
people’s lives.recordingrecorderscompactGermany