Unit3Welcometotheunit课件--高中英语牛津译林版（2020）必修第三册.pptx

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1、B3U3 The world onlineHow many industrial revolutions do we have?Lead-inThe firstThe secondThe thirdThe fourthThe 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）InternetLead-inInte

2、r Inter“交互的交互的,在内的在内的”netnet“网格，网络网格，网络”The Internet is an international computer network connecting other networks and computers from companies,universities,etc.Internet+online educationLead-inonline medicaltreatmentonline ride-hailingonline shoppinginstant message.The Internet is of significance t

3、o our daily life and now we can not live without it.PresentationI 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我希望我们能用互联网跨越障碍,联结文化。联结文化。蒂姆蒂姆伯纳斯伯纳斯李李 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

4、来信息交流的全新模式。Pre-readingNow,lets read a web page to know some inventions.Now,lets read a web page to know some inventions.We use Internet everyday,but do you know its development We use Internet everyday,but do you know its development milestones?milestones?a very important stage or event in the devel

5、opment of sth.Welcome to the unitThe 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.While-reading1.When was the first

6、 message sent in the world?1.When was the first message sent in the world?2.Why did he send a message to himself?2.Why did he send a message to himself?3.How did he separate the username from the name of his 3.How did he separate the username from the name of his machine?machine?The first webcam was

7、 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 desks whether the pot was empty to avoid wasted trips for coffee.While-reading1.When was the first webcam created?What did it fil

8、m and why?1.When was the first webcam created?What did it film and why?2.Free talk:What functions do the webcam have now?2.Free talk:What functions do the webcam have now?Emojis,small digital images used to express ideas or feelings in electronic communication,were created in 1999 in Japan.The creat

9、or was inspired by Japanese comics,street signs and Chinese characters.Soon emojis took off throughout the world.Oxford Dictionaries selected ,the“Face with Tears of Joy”emoji,as the Word of the Year 2015.While-reading1.What is emojis?Whats its origin?1.What is emojis?Whats its origin?2.Free talk:Wh

10、at kind of emojis do you like to use?What kind of information 2.Free talk:What kind of emojis do you like to use?What kind of information do you want to express?do you want to express?Try to introduce one invention of Internet:lThe origin of the year:Feb.1999The origin of the year:Feb.1999lThe inven

11、tor:TencentThe inventor:TencentlThe aim:online communication,video call,document The aim:online communication,video call,document transfer,etctransfer,etclWhat kind of functions do you usually use?What kind of functions do you usually use?lThe origin of the year:May.2003The origin of the year:May.2003lThe inventor:Alibaba companyThe inventor:Alibaba companylThe aim:online shopping for customersThe aim:online shopping for customerslWhat kind of functions do you usually use?What kind of functions do you usually use?post-reading