Unit 3 The world Online Welcome to the unit & Reading 1 课件-2023-2024学年高中英语译林版（2020）必修第三册

B3U3 The world online How many industrial revolutions do we have? Lead-in The first The second The third The fourth The steam technology revolution (蒸汽技术革命） The power technology revolution (电气技术革命） The information technology revolution (信息技术革命） industrial intelligence and integration (工业智能&一体化） Internet Life Entertainment Study Travel to places Buy something Pay the bill Call a taxi Watch a video Listen to the music Play games Search for information Look up the words Communicate with others Internet Lead-in Inter “交互的,在内的” net “网格，网络” The Internet is an international computer network connecting other networks and computers from companies, universities,etc. Internet online education Lead-in online medical treatment online ride-hailing online shopping What can we do on the internet? online chatting online searching online games online films The Internet is of significance to our daily life and now we can not live without it. Presentation I hope we will use the Net to cross barriers and connect cultures. --- Tim Berners-Lee 我希望我们能用互联网跨越障碍, 联结文化。 — 蒂姆·伯纳斯·李 该句出自英国计算机科学家蒂姆·伯纳斯·李。他是万维网(World Wide Web)的发明者。这句话体现了伯纳斯李对互联网的美好愿景。他希望互联网能发挥其互联互通的作用, 跨越各种障碍, 成为不同文化的纽带, 带来信息交流的全新模式。 Now, let's read a web page to know some inventions. We use Internet everyday, but do you know its development milestones ? a very important stage or event in the development of sth. Welcome to the unit The first email was sent in 1971 by Ray Tomlinson. It was a test message to himself. He wanted to see whether he could send a message from one computer to another. He chose the “@” sign to separate the username from the name of his machine. 1. When was the first message sent in the world? 2. Why did he send a message to himself? Welcome to the unit The first webcam was created by computer scientists at the University of Cambridge in 1991. What did it film? A coffee pot outside the office. These scientists used the webcam to see from their