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高中英语多媒体课件

高中英语多媒体课件. Welcome To Our School. UNIT 23. TELEPHONES. Answer the following questions. 1. How was one telephone connected with another in the past? 2. How is one telephone connected with another today?. By thick heavy metal wires. By very thin glass pipes and satellite.

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高中英语多媒体课件

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  1. 高中英语多媒体课件

  2. Welcome To Our School

  3. UNIT 23 TELEPHONES

  4. Answer the following questions • 1. How was one telephone connected with another in the past? • 2. How is one telephone connected with another today? By thick heavy metal wires By very thin glass pipes and satellite

  5. How does a telephone work? electrical signals electrical signals

  6. Why did people have to wind the handle before making a call?

  7. What did the telephone operator do?

  8. What are satellites used for? China America

  9. What was the way to send signals in the past? too noisy! not clear! electrical signals electrical signals metal wires very clear How to send signals now? light signals light signals electrical signals electrical signals thin glass pipes

  10. A conference calling B E C D

  11. call waiting A B C

  12. B B redirection A c

  13. Find some words to complete the sentences: • If you don’t know the telephone number of a certain unit, you may look it up in the telephone d________. 2. This kind of food will s__________you up after your illness. 3. Please r________ all the letters to the following addresses. irectory trengthen edirect

  14. requently 4. We have plenty of rain here, It rains f__________ in this part of the country. 5. You must w______ the clock once a week, or it will stop. ind

  15. Complete the following sentences How he came to America 1. ________________________________ (他怎样到美国来的) was a mystery. 2. ____________________________________________ (我们是否应该穿校服) has not been decided. 3. I didn’t receive the news _________________________ _ ______(会议时间推迟了） 4. The problem is ___________________________________ ___________ ( 电信号会变得越来越弱） as they travel along metal wires. Whether we should wear school uniforms that the meeting had been delayed that electrical signals get weaker and weaker

  16. Discussion If you have got enough money, which of the following things do you want to have most? Give your reasons for the choice. A. A mobile telephone B. A car C. A colour TV D. A computer

  17. Homework: 1. Read the text again and again 2. Ex.1 on Page 127.

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