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Unit,1,Reading 2 TV and audio devices: a review,Unit 1,课件描述： 这是Reading 板块的第二课时。由于Reading 板块的文章不仅为学生提供丰富的信息，同时又富含字、词、句等语言材料供学生学习，所以第二课时教学主要关注学生对字词句等语言知识的学习和运用，如重要短语的理解和用法以及核心词汇的理解和用法等。,Important phrases,the evolution of video and sound devices shortly afterwards contributed to the development of TV. was very primitive and had many drawbacks made important breakthroughs in the development of the TV in the late 1920s and early 1930s adopt many of the principles,constructed the first colour TV regular colour TV broadcasts were delayed within a short time Satellites allow live TV programmes to be broadcast over vast distances make TV accessible to people who live far away from cities throughout the countryside and the remote areas a small percentage of people benefit from satellite TV broadcast the signals,made the first recording of a human voice used round tubes to record on used discs as alternative to tubes be wound up by hand Times sure have changed! employed steel tape to record on paper tape also tore easily. by the late 1960s,Sound and video goes digital. The first CDs were made available. with the adaptation of digital technology make things of the past keep pace with foresee what the future will bring,Key words,1. contribute 2. adopt 3. delay 4. access 5. wind 6. tear 7. live,Many different people contributed to the development of TV. contribute (v.) 1. to give money, help, ideas etc. to something that a lot of other people are also involved in contribute to/towards City employees cannot contribute to political campaigns. contribute sth. to/towards sth. The volunteers contribute their own time to the project. 2. to help to make something happen contribute to Alcohol contributes to 100,000 deaths a year in the US. 3. to write articles, stories, poems etc for a newspaper or magazine contribute to one of several authors contributing to the book,Modern TVs adopt many of the principles first discovered by Farnsworth. adopt (v.) 1. to start to deal with or think about something in a particular way adopt an approach/policy/attitude etc. The courts were asked to adopt a more flexible approach to young offenders. 2. to take someone elses child into your home and legally become its parent The couple are unable to have children of their own, but hope to adopt a girl.,Regular colour TV broadcasts were delayed in the UK until 1967. delay (v.) to wait until a later time to do something He delayed his decision on whether to call an election. delay doing sth. Big companies often delay paying their bills. delay sth. until sth. The opening of this section of the road is delayed until September. 2. to make someone or something late seriously/badly/slightly etc delayed The flight was badly delayed because of fog.,They also make TV accessible to people who live far away from cities, accessible (adj.) easy to obtain or use accessible to the need for an efficient health service that is accessible to all easily/readily accessible Computers should be made readily accessible to teachers and pupils. a place, building, or object that is accessible is easy to reach or get into The island is only accessible by boat. There is a church which is easily accessible from my home. someone who is accessible is easy to meet and talk to, even if they are very important or powerful I think that youll find shes very accessible. a book, poem, painting etc that is accessible is easy to understand and enjoy He wants his music to be accessible to everyone.,access (n.) 1. the right to enter a place, use something, see someone etc access to Access to the papers is restricted to senior management. Cats should always have access to fresh, clean water. 2. how easy or difficult it is for people to enter a public building, to reach a place, or talk to someone access to a house with easy access to the sea 3. to succeed in entering a place or in seeing someone or something gain/get access (to sth) The police managed to gain access through an upstairs window. access (vt.) to find information, especially on a computer Users can access their voice mail remotely.,The first record players had to be wound up by hand wind (v.) (wound, wound ) 1. to turn or twist something several times around something else wind sth around/round sth The hair is divided into sections and wound around heated rods. 2. to turn part of a machine around several times, in order to make it move or start working also wind up Did you remember to wind the clock? 3. if a road, river etc winds somewhere, it has many smooth bends and is usually very long wind (its way) through/along etc sth Highway 99 winds its way along the coast. a winding path 4. to make a tape move in a machine wind sth forward/back Can you wind the video back a little way - I want to see that bit again., or paper tape, which was easier to use but often broke also tore easily. tear (v.) to damage something such as paper or cloth by pulling it hard or letting it touch something sharp Be careful not to tear the paper. tear sth. on sth. She realized she had torn her jacket on a nail. tear sth. off Tear off the slip at the bottom of this page and send it back to us. tear sth. out (of sth.) He tore a page out of his notebook and handed it to her. The paper tears easily. to pull something violently from a person or place tear sth. from sb./sth. He tore the letter from my hand. tear sth. off sth. High winds nearly tore the roof off the house.,be torn 1. if you are torn, you are unable to decide what to do because you have different feelings or different things that you want Jess was torn by anger and worry. be torn between She was torn between her love of dancing and her fear of performing in public. 2. if a country or group is torn, it is divided because people in it have very different ideas and are arguing or fighting with each other The country was torn by civil war. She spent two months in the war-torn country.,Phrases tear sb. /sth. to shreds/pieces tear apart to cause serious arguments in a group of people tear at / to pull violently at someone or something tear away to make yourself or someone else leave a place when you or they do not want to leave tear down to destroy a building deliberately tear off to remove your clothes as quickly as you can tear up (1)to tear a piece of paper or cloth into small pieces (2)to remove something from the ground by pulling or pushing it violently tear up an agreement/a contract etc to say that you no longer accept an agreement or contract,1. Scandal is tearing the government _. 2. They threatened to tear _ the peace agreement. 3. The children were screaming and tearing _ each others hair. 4. She tore _ his letter and threw it away. 5. Trees were torn _ by the storm. 6. A lot of the old tower blocks have been torn _ to make way for new housing. 7. He was enjoying the fun and couldnt tear himself _. 8. We finally managed to tear him _ _ the TV. 9. He tore _ his clothes and dived into the water.,Satellites allow live TV programmes to be broadcast over vast distances, live (adj.) 1. a live television or radio programme is seen or heard on television or radio at the same time as it is actually happening a live radio phone-in show There will be live TV coverage of tonights big match. 2. not dead or artificial = living experiments on live animals 3. a live performance is one in which the entertainer performs for people who are watching, rather than a film, record etc The band will be giving a live concert performance next week. 4. a wire or piece of equipment that is live has electricity flowing through it Be careful - those wires are live.,live (adv.) The ceremony will be broadcast live on television. The match will be shown live by the BBC. I love their music, but Ive never seen them perform live. The band is playing live in Birmingham tonight.,Homework 1. Review the passage. 2. Page 102 A1, A2.,
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