英语必修Ⅲ外研版MODULE5名校课件4（共10张）相关链接.ppt

1、成才之路 英语路漫漫其修远兮 吾将上下而求索外研版 必修3 Great People and Great Inventions of Ancient ChinaModule 5背 景 e 站 链 接电话是当今社会最普遍、最实用的通讯工具之一。1876年世界上第一部电话诞生。电话的发明者亚历山大格雷厄姆贝尔，从小就受到家庭的熏陶，对声学和语言学产生了兴趣The invention of the telephoneIn the nineteenth century，the invention of the telegraph made it possible to send noises，sign

2、als(信号)，and even music over wires(电线)from one place to another.However，the human voice had never traveled this way.1.and in 1876 some of their efforts paid off.Two American inventors,Alexander Graham Bell and Elisha Gray，succeeded at almost the same time.The United States Supreme Court finally had t

3、o decide which of the two was the first inventor of the telephone.The Court decided in Bells favor.Born in Edinburgh，Scotland，Bell grew up in a family that was very interested in teaching people to speak.His grandfather had been an actor who left the theatre to teach elocution(演说术)His father was a t

4、eacher who helped the deaf learn how to speak.In 1871，the year after the Bells arrival in Canada，young Alexander found a job in the United States.He was hired as a teacher in a new school for the deaf in Boston，Massachusetts.Hetaught there and at other United States schools.Finally，he opened a schoo

5、l of his own.Bell thought that if he could make speech visible(看得见的)by actually showing the vibrations(震动)of the voice，he could teach his deaf pupils to make the same vibrations themselves.Belltried to find a way to reproduce the vibrations by electrical means.His assistant，Watson，worked with him fo

6、r almost four years.2.When their money ran out，they persuaded some businessmen to help them with money.One day in 1874，Bell was at his receiver in the room，trying to catch the signals sent by Watson from another room.Suddenly he heard a twang.Bell rushed into Watsons room and shouted，“What did you d

7、o then？”He found that the sound had been made by chance when two pieces of metal had stuck together and carried to Bell over the wire.After this discovery，all they had to do was to find the best kinds of materials for carrying the human voice over wires.The basic principle had been discovered.Not lo

8、ng after Bells invention，telephone companies were established in the United States，Great Britain，France and many other countries.知识点击努力或付出得到回报几乎同时雇用用完自主探究Choose the correct sentences to fill in the blanks in the text.AThey spent all their spare time，as well as their spare money，on their experimentsBBell never lost interest in helping the deafCMany inventors tried to find a way to send a voice over wires答案：1.C2.A