牛津译林版（2019）必修第三册Unit 3 The world online Welcome to the unit & Reading 课件(共24张PPT，内镶嵌2视频)

(共24张PPT)
Unit 3 The world online
Welcome to the unit & Reading
Presentation
Lead-in
What is the Internet
Language points
Lead-in
What can we do on the internet
online chatting
search for information
listen to music
play games
watch videos
do shopping
Quotation
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
Now, let's read a web page and complete the blanks.
The first email was sent ________ by Ray Tomlinson. It was a test message to himself. He wanted to see whether he could ______________ from one computer to another. He chose ______________ to separate the username from the name of his machine.
in 1971
send a message
the “@” sign
Welcome to the unit
The first webcam was created by computer scientists at the University of Cambridge ________. What did it film A coffee pot _______ the office. These scientists used the webcam to see ______________ whether the pot was empty to avoid wasted trips for coffee.
Welcome to the unit
in 1991
outside
from their desks
Welcome to the unit
Emojis, small digital images used to ________________________ in electronic communication, were created _________ in Japan. The creator was inspired by Japanese comics, street signs and ___________________. Soon emojis __________ throughout the world. Oxford Dictionaries selected, the “Face with Tears of Joy” emoji, as the Word of the Year 2015.
express ideas or feelings
in 1999
Chinese characters
took off
Reading
Fast-reading
Find the topic sentence of each paragraph
Para. 1
Para. 5
Para. 4
Para. 3
Para. 2
The Internet can connect people across the world to a single shared community.
One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information.
The Internet has also made our lives unbelievably convenient, with all sorts of goods and services provided ….
Above all else, the Internet helps us establish and maintain social ties.
However, while the Internet brings many valuable advantages, being connected has its problems.
Introduction
Advantage 1
Advantage 2
Advantage 3
Conclusion
Fast-reading
Read and complete the chart.
Introduction
Para.1:
Main body
Paras. 2–4:
The Internet has many advantages.
Conclusion
(Para.5):
Advantage 1
Advantage 2
Advantage 3
We can achieve almost
anything online.
We should use the Internet properly and responsibly.
We have quick and easy access to a huge amount of information online.
E-commerce has made our lives unbelievably convenient.
The Internet helps us establish and maintain social ties.
Careful-reading
Advantages Supporting details
Advantages 1 Having access to (1)_________________ information
Gathering information quickly and easily
Advantages 2 (2)____________________________
Doing shopping quickly and easily
Ordering a taxi with an app
Making travel arrangements
(3)__________________________ on the smartphone
Advantages 3 Keeping in contact with loved ones
Finding (4)_________________
Discovering communities who (5)________________
Read paragraph 2-4 and finish the chart
a huge amount of
Having food delivered to you
Paying for almost everything
long-lost friends
share our hobbies
Careful-reading
Read paragraph 5 and answer the following the questions
1.What is the author’s attitude towards the Internet
A. Subjective B. Objective
C. Uncaring D. Doubtful
Careful-reading
2. What is the author’s purpose in writing the text
A. To show the various advantages of the Internet.
B. To tell people to focus on the disadvantages of the Internet.
C. To call on us to use the Internet as frequently as we can.
D. To show us the advantages of the Internet, warn us to recognize its disadvantages, and hope we can use it wisely and properly.
Post-reading
The author mentions in the conclusion that the Internet has its problems. What do you think the problems with the Internet are Make a list of them.
Problems with the Internet:
＊Personal information may be stolen.
＊Being addicted to online games.
＊Distracting our attention from study.
＊Internet viruses can infect and damage computers.
Language Points
1. Billions of people in different parts of the world have joined it already and obviously many more will follow. Even in the countryside, the Internet enables people to reach beyond their villages and get in touch with the outside world. (line 2-4)
Para.1
billions of
enable sb to do sth
get in touch with
数以十亿计的,许多的
使某人能够做某事
和....取得联系
2. We can achieve almost anything online—with access to the Internet come some truly life-changing advantages. (line 4-6)
Para.1
access (n.)机会；权利；通道，入径
(vt.) 到达；进入；使用
accessible(adj.) 可到达的；可进入的；可使用的；易接近的；易懂的
accessibly(adv.) 可接近地；平易近人地
have / gain / get access to… 接近；使用；利用
be accessible to… 容易被……理解; 易受……的影响；(某人)平易近人
with access to…使用；有权访问
3. One of the greatest advantages of the Internet lies in the quick and easy access to a huge amount of information. To a certain extent, the world’s knowledge is all at our fingertips.With the click of a mouse or the touch of a button, it is possible to find out almost anything we care to know, from recipes to travel packages,from military affairs to learning resources. (line 7-11)
Para.2
lie in
a huge amount of
travel packages
military affairs
存在于
大量，许多
旅游套餐
军事事务
4. In the time it takes to find one book in the library, we can use a search engine to bring up millions of results.No wonder the Internet has now become the first place that the majority of people turn to for information. (line 11-14)
Para.2
bring up 调出；提出；抚养；教育；呕吐
【归纳拓展】
bring about 引起; 产生; 导致; 带来
bring in 引进; 赚得
bring out 使显现; 阐明; 出版
bring back 归还; 使……回想起
bring down 使降低, 减少; 打垮, 击败
限制性定语从句
5. When you wish to go on holiday, you can make all your travel arrangements just in front of the computer. (line 24-26)
Para.3
arrangement (n.)安排；布置；约定；排列
make arrangements/an arrangement for...为……做安排
arrange（vt.）安排；准备；整理
arrange to do sth. 安排做
arrange sth. for sb. 为某人安排某事
arrange for sb. to do sth. 安排某人做某事
6. Above all else, the Internet helps us establish and maintain social ties. With all sorts of communication software, physical distance no longer gets in the way. No matter where we are, we are able to keep in contact with loved ones, find long-lost friends and discover whole new communities who share our hobbies. (line 7-11)
Para.4
all sorts of
get in the way
keep in contact with
各种各样的
妨碍，阻碍
和....保持联系