M7 unit1 【學(xué)習(xí)目標(biāo)】1. Use English to name some electrical appliances and electronic devices 2. Use English to express the electrical appliances or electronic devices that you and your family have benefited a lot from and also share experiences3. To know the development of sound and video devices4. Have the desire /enthusiasm to innovate and invent things in the future預(yù)習(xí)案一填詞(每小題只填一個單詞)1.easy to reach, obtain or use :_2.easy to carry: _3.a law or rule that is behind something：_4.one of several parts that make up something:_5.the slow development of something:_二、單詞、短語翻譯1. _ 不久之后 2. _ 對作出貢獻(xiàn)；促成；捐助；給寫稿 3. make a breakthrough in _4.delayuntil 把推遲到5. _ 在二十世紀(jì)二十年代晚期 6._ 彩色的 7. make a recording of_ 8._上發(fā)條 9._ 從受益10._隨著的發(fā)展探究案Guess the meanings :1.electrical ：electrical appliances:2.electronic devices:Make a list of the electrical appliances and electronic devices you have at home on the blackboard ?( Write down the names as many as possible)2.Discussion:1.According to the lists ,which one do you think has benefited you and your family greatly? why? (give examples)3.Fill in the blanks:_ can help you to do housework._can make the terrible sound?_can help you contact your friends faraway. _can make sounds and pictures at the same time? Question：Do you know the development of video and sound devices？The evolution of video and sound devices一Fast Reading:1.Who developed the system used for most early TV broadcast?2.Who made the first recording of a human voice?3.What were developed by the late 1960s?二True or False1.Until 1972,most people used black-and-white TV. ( )2.Colour TV became popular within just a few years after it was invented. ( )3.People without satellite dishes do not benefit at all from satellite TV broadcasts. ( )4.Some of the first tape recorders used plastic tape to record on. ( )訓(xùn)練案Work out the timeline for the development of video and sound devices.YEAREVENT18771887192519291938196219671982 Homework：1. 熟讀并背上Reading里的生詞2. 讀Reading文章3遍3. 完成課本part D 及E部分的練習(xí)。答案：一 填詞1. accessible 2. portable 3. principle 4. component 5. evolution二 單詞、短語翻譯1. shortly after 2. make contributions to 3. 在.有突破 5. in the 1920s6. in color 7. 錄制 8. wind up 9. benefit from 10. with the development of 探究案1. 電的 （家用）電氣設(shè)備； 電子設(shè)備2. Microwave ovens3. Refrigerators4. TV sets5. Air conditioners6. Washing machines7. Vacuum cleaners8. Dishwasher9. Computers10. CD players11. Mobile phones12. Digital camera13. Electronic dictionaries14. The evolution of video and sound devices一.1.John Logie Baird 2.John Logie Baird 3.Portable cassette players and video recorders二. FTFF三. 見課本后面 教參- 4 -