牛津英语8A课件Unit4-invention.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,1,We can use it to communicate with people,over long distances.,2 We can make phone calls with it anytime,anywhere.,3 It is perhaps one of the most practical inventions in the 20th century.Now people use it for both work and play.,telephone/mobile phone,mobile phone,computer,lift,4 After its invention,we no longer needed to use the stairs.,Guessing game,airplane/aircraft,air conditioner,the underground,5,It cools or warms rooms to make them more comfortable for people to stay in.,6,Passengers who use this for transportation no longer need to worry about traffic jams.,7,The Wright brothers invented the first machine-powered model of it.,What inventions are described in the following sentences?,Revision:Vocabulary,comfortable,carriage,century,passenger,practical,distance,keep in touch with,develop,in the daytime,imagine,candle,mobile phone,wheel,Inventor,Time of invention,Life after its invention,Examples:,The wheel,Read the first part of the article and complete the table.,Dont know.,A few thousand years ago.,Travelling became faster and more comfortable.,carriages,trains,cars,While you read,2,What else needs wheels?,Why is the wheel perhaps the greatest invention in history?,The telephone,Alexander Graham Bell,invented one of the first practical telephones in 1876.Since then,people have,been able to,speak to each other over long distances.Today millions of people,across the world,own mobile phones.They,allow,people,to,keep in touch with,each other anytime,anywhere,.,Inventor,Time of invention,Life after its invention,People can _,_.,People can _,_ _.,The telephone,over long distances,speak to each other,mobile phones,keep in touch with,each other anytime,anywhere with,Read the second part of the article and complete the table.,Present the table as a dialogue.,Alexander Graham Bell.,In 1876.,The light bulb,Thomas Edison developed the first practical light bulb in 1879.,Before the invention of the light bulb,people had to use oil lamps,gas lamps or candles to see at night.,With light bulbs,people can do as many things in the evenings as they can in the daytime.,Can you imagine living without them?,Read the third part of the article and answer these questions.,The light bulb,1 What did people use to see at night before the invention of the light bulb?,People used oil lamps,gas lamps or candles.,2 What has life been like after the invention of the light bulb?,People can do as many things in the evenings as they can in the daytime.,1946,ENIAC,the first computer,1981,IBM,the first PC,Now,laptops,tablets,The computer,Talk about the invention of the computer using the information below.,Talk about the computer,The computer is perhaps the greatest invention of the 20th century.,In,After its invention,Since then,Before the invention of,With,people,Today,Can you imagine life without computers?,Useful words/expressions:,invent,develop,be able to,have to,across the world,allow to do,keep in touch with,The computer,1946,ENIAC,the first computer,1981,IBM,the first PC,Now,laptops,tablets,The computer,5,Which is the greatest invention?,Prepare a report in groups.,Present the report next lesson.,Your report should contain:,When was it invented?,Who invented it?,How is life before its invention?,How is life after its invention?,Homework:,