牛津译林版（2019）必修 第三册Unit 3 The world online Welcome to the unit 课件(共16张PPT)

(共16张PPT)
Unit 3 The world online
welcome to the unit
Learn some facts about the Internet.
Discuss some questions about the Internet.
Learning objectives
The Internet is the biggest source of information in the world
Internet
a computer
and it’s accessible(可获得的) through ___________.
Task 1---Lead -in
cross barriers
barrier: 障碍
connect cultures
I hope we will use the Net to
and
.
--- 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
When you are surfing the Internet, what do you usually do
Task 2---Free talk
1. to obtain information or resources
2. to shop or chat
3. to entertain ourselves
Task 3--Some facts about the Internet
There are many important milestones (里程碑) in the development of the Internet.
Let’s learn some facts about it one by one.
We can see the “@” sign of an email address.
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.
the______ of the first email
origin
We can see a webcam.
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 desks whether the pot was empty to avoid wasted trips for coffee.
What was the first webcam used for
Say something about it in your own words.
We can see some emojis.
Emojis, small digital images used to express ideas or feelings in electronic communication, were created in 1999 in Japan. The creator 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.
Emojis are _________________ for _________ ideas or feelings.
Japanese comics, street signs and Chinese characters are the __________ for their creation.
expressing
small digital images
inspirations
emojis= e(图片)+ moji(文字)
Which of the above inventions do you use
most frequently Why
Task 4--- Free talk
Task 5--Language points
很快表情符号就风靡全球了。
Soon emojis took off throughout the world.
1. take off
突然大受欢迎, 迅速流行
2. The plane eventually took off at 11 o'clock.
3. You have to take off your shoes before you
go to the computer room.
4. I have decided to take a few days off work next week.
5. His career took off when he was thirty.
(事业)腾飞
(飞机)起飞
脱下, 脱掉(衣物)
休假; 休息
take away
take out
take in
take on
take up
两分钟记忆take构成的短语, 挑战你的记忆力。
拿走；使离开；消除(病痛等)
收留; 把......改小；吸收,理解；欺骗
呈现；录用,雇佣；穿上
拿出；带......出去; 取出；
开始从事；占据；拿起(武器)
take over
接收，接管，
Preview the Reading Part.
Task 6---Homework