1、Module7 Unit1 Welcome & ReadingThe evolution of video and sound devices教学目标After reading, students are expected to gain some information about the history, the current situation and the future improvement of video and sound devices. Meanwhile, students will improve their reading skills by the headli
2、nes.重点难点重点：How to help Ss understand the evolution of video and sound devices better.难点：How to make Ss fully participate in all the activities.设计思想 帮助学生了解影像和声音设备发展的历史、现状和未来的改进；同时，帮助学生通过标题和小标题这一阅读技能，快速获得信息。教学资源 对应课件教学设计【课堂引入】前置性补偿 I Welcome in this unit.1. How did people keep in touch in the past? 2.
3、 How do people keep in touch now? 3. What does the TV in your home look like? 4. What audio devices do you choose to enjoy music? II Paraphrase (英文释义)evolution principle accessible distribute componentportable digital storage1. _: easy to carry2. _: using a system of receiving, sending or storing in
4、formation in the form of numbers3. _: spread something over an area4. _: a law or rule that is behind something5. _: the slow development of something6. _: one of several parts that make up something7. _: the space where things or information can be kept8. _: easy to reach, obtain or use【课堂学习】知识梳理St
5、ep I Fast reading Read the text quickly and choose the best answers.1When and where was the first longdistance TV broadcast made?( )AIn 1925 in the USA. BIn 1926 in the UK.CIn 1928 in the UK. DIn 1928 in both the USA and the UK.2Who might be the inventor of the first TV?( )AEmile Berliner in the USA
6、. BPhilo Farnsworth in the USA.CJohn Logie Baird in the UK. DIt remains uncertain.3Which of the following is NOT the factor that makes people living far away receive TV programme?( )AThe use of satellite. BThe distribution of the satellite dishes.CThe local TV companies get the signals.D. Many compa
7、nies broadcast the same programme.4Before the digital recorders，how many kinds of materials were used to record sound?( ) AFive.BSix. CSeven. DEight.5It can be concluded from the text that_.AVideo and sound devices will become increasingly easy to useBVideo and sound devices will become more and mor
8、e expensiveCThe history of video and sound devices is no shorter than that of TVDThe American played an important role in the development of video and sound devicesStep II Careful Reading Read the text and fill in the blanks.（A级）1877The first recording of a human1_was made.1887Emile Berliner invente
9、d a record player that used2_ to record on.1925The first public TV broadcasts were made, in the 3_.19294_ public broadcasting began in London.1938The first 5_ TV programme was broadcast.1962 6_were used to broadcast TV.1967Regular colour TV broadcasts began in the 7_.1982The first 8_ were made avail
10、able.1993The 9_ was born. 1995The 10_ was invented.Step III Reading for details Page4 C1 True Or False and EStep IV SummaryAccording to the passage we know that the first public TV broadcasts were made in the 1._in 1925 while 2._public broadcasting followed shortly afterwards. Many people 3._to the
11、development of TV. John Logie Baird constructed the first 4._TV in 1928 and 5._were used to broadcast TV programme in 1962.The history of recording human voice is earlier. It was in 6._that Thomas Edison made the first record player which had to be wound up by 7._and only last two minutes long. Not
12、until by the late 1960s was the portable cassette players developed along with 8._recorders.From 1980s on, sound and video go 9._.With the development of digital technology，sound and video can now be stored on a PC，on the Internet，or all kinds of portable storage. No one can 10._what the future will
13、 bring.Step V Language points1.Regular public broadcasting followed shortly afterwards, first beginning on 11 May 1928 in New York and on 20August 1929 in London.Most early TV broadcasts were made using a system developed by John Baird in the UK. 翻译并理解以上两句：句中分词短语作_句中分词短语作_2. John Logie Baird constru
14、cted the first colour TV in 1928, but it was not until 1938 that the first colour TV programme was broadcast.翻译：_1) until 既能做_词，也能做_词。当until用于肯定句时，前面的动词应用_性动词；当until用于否定句时，前面的动词应用_性动词。(延续性还是短暂性)e.g. He didnt leave until the clock struck twelve.( until词性) Ill wait until tomorrow. (until词性)2)Not 以及unt
15、il引导的时间时间状语或时间状语从句放在句首，主句用部分倒装结构。3)Not until的强调句型：It +is/was +not until 引导的时间时间状语或时间状语从句放在句首 +that +剩余部分(主句,不含not)。 E.g. He didnt realize the importance of study until he failed to find a proper job.倒装句型：_强调句型：_4) until引导的时间状语从句中的省略 当从句主语与主句主语一致，且从句中含动词be的形式时，从句主语与动词be可一并省略。E.g. He didnt speak until
16、 (he was) spoken to. 直到有人跟他说话他才开口。【练习】 It was not until dark _she found _she thought was the correct way to solve the problem. A. when, that B. that ; that C. that ; whatD. when; what Not until _ his sunglasses _ that he was my old friend, Bob.A did he take off; I recognized B did he take off; did I
17、 recognize C he took off; I recognized D he took off; did I recognize It was _ back home after the experiment .A. not until midnight did he go B. until midnight that he didnt go C. not until midnight that he went D. until midnight when he didnt go 3. It took more than two decades, though, until 1951
18、, for regular colour TV broadcasts to begin in the USA. 中文：_句中though 在本句中用作_,意思是_,常用于_,有时也可用于_我感冒了，不过不严重 _(1) though用作连词，引导让步状语从句。相当于_,一般可以和_,_连用，但不能和_连用。尽管夜深了，他还在工作。_2）though可以用于倒装句中，这是相当于_,意为_,引导让步状语从句。虽然他岁数小，但却能说很流利的英语_4. They also make TV accessible to people who live far away from cities, and s
19、atellite dishes can often be seen distributed throughout the countryside and remote areas.accessible adj 可接近的，可进入的，可使用的 (to)have (no) access to有(没有)使用、接近的机会（权利）；access 机会，权利，通道Students have free access to the library in our school._1) You need a password to get access to the computer system._2)有了网络，
20、学生可以利用更丰富的资源。With the Internet, students can_ _ _richer resources.The Internet makes more and more violent games _to children.A. accessible B. avoidable C. acceptable D. adjustable5. However, most people still benefit from satellite TV, as local TV companies broadcast the signals they get from satel
21、lite receivers to the population living nearby.1）句法分析：_ 2) signal n._ /v._【易混辨析】signal/symbol/sign/markIn the picture the tree is the_ of life and the snake is the _of evil.Dont you see the _：“keep off the grass”Every garment in the shop has a price _ sewn on it.3) benefit n. 利润, 益处 vi 得益, 利用 vt. 有益
22、于, 有利于拓展： sb benefit from sth _ sth benefit sb_对有益_=_ 为了的利益_你的建议使我受益匪浅。_他从卖房子中赚了750美元。_介词填空：Farmers benefit _ the new tax law most.The organization is voluntary, not _ profit.【课堂小结】 梳理结构和重点句子。【板书设计】 文章结构：小标题和重点词汇。课堂反馈识记短语1. 奉献于, 促进，投稿_ 2. 在取得突破_3. 在20世纪20年代晚期_4. 使人们能够看到电视_5. 遥远的地区_ 6. 从获益_7. 给上发条_ 8
23、. play records _9. 对可得到，利用_ 10. 使成为过去_11. 与步调一致_课后测评1. 使人们收看电视 make TV _ to people 2. throughout the countryside and _ areas. 遍及农村和偏远地区3. 从中受益 _ from 4. 首次记录 make the first _ of 5. 使用唱片来代替网管的留声机used discs as _ to tubes 6. 被手动上发条be _ up by hand 7. 引进_ video recorders 8. 声音和影像数字化 sound and video _ digital9. make sth _to sb使.可以享受某物; 使.买得起某物. 10. 有更好的音质 have a much better sound _ 11. 随着数字技术的发展 with the _ of digital technology 12. 跟上，赶上 keep _ with 13. have _ to 可以利用 14. 的主要手段 the _ means of 15. 取决于 be _ to各部分参考答案：见课件。
