译林版（2020） 必修第三册 Unit 4 Scientists Who Changed the World Integrated skills 课件-（29张）

(共29张PPT)
Unit 3
The world online
A Mr Tan, an IT teacher, is giving a brief introduction to the Internet. Listen and finish the exercises below.
Focus on key words
Do not try to catch every word. Instead, listen for key words and phrases. You should focus on getting the main idea, not on single words or grammar.
不要试图听懂每个单词。相反，听关键词和短语。你应该把注意力集中在主旨上，而不是单个的单词或语法。
Be careful when listening for years: it is normal to treat the first two numbers and the last two numbers separately, but there are various ways of saying them. In general, speakers try to use the shortest way possible, for example, 1979 (nineteen eventy-nine), 2003 (two thousand and three), 1805 (eighteen o five). Sometimes we add mid- before a certain year, e.g. mid-2008. We also use expressions like the early / late 1980s.
Listening for years
1. What does Mr Tan mainly talk about in his introduction to the Internet
_______________________________________
2. How many computers were connected in the beginning
_______________________________________
3. What did scientists around the world originally use the Internet as
_______________________________________
4. What did Tim Berners-Lee teach others to do
_______________________________________
A1 Listen to the talk and answer the following questions.
Mr Tan, an IT teacher, is giving a brief introduction to the Internet.
Listen and finish the exercises below.
P36 A1
The history and development of the Internet.
Four computers.
A space to share information.
To build their own websites.
Listen to the talk again
In (1)______________ The first general-purpose computers came onto the market.
In 1969 Computers allowed people to (2) __________________ along a network.
In (3)______________ Public commercial use of the Internet again.
In 1990 (4) _________________________ was built.
In (5)______________ There were (6) _________________ websites online.
In 2016 There were (7)____________ people using the Internet – (8) _________________ of the world’s population …
the early 1950s
pass messages
mid-1989
The world’s first website
2014
more than 1 billion
3.6 billion
about 48 per cent
听力原文
Good morning, class, today I am going to talk about the Internet, I am
sure all of you use the internet. But what do you know about it Now
let me tell you about it's history and development, the first
general-purpose computers came onto the market in the early 1950s,
but it was only in 1969, the scientists invented the way for computers to
communicate with each other. This meant that the computer allowed
people to pass message along a network and talk to each other.
To start with, only 4 compouters were connected and the net work was for military use. public commercial use of the internet began in mid 1989.
One of the main application of the internet is the world wide web,
pages on the world wide web are called websites and can be accessed
through the internet.
听力原文
There were origially use as a space for scientists surround the world to share information, the world's first website was built in 1990 by Tim Berners-Lee, a british scientist.
He went to other's how to built their own websites allowing the internet to grow, within 24 years , there were more than 1 billion website online, 2 years later in 2016, 3.6 billion people were using the Internet, about 48 per cent of the world's population at the time and increasingly people are using their phones to access the internet, the future is definitely online and is definitely mobile.
Mr Tan also shows the students some charts about Internet use.
Viewing charts
There are different types of charts to show information. Bar charts are often used to show how something changes over time or to compare different things. Pie charts are used to show percentages. Line charts are often used to show trends. To understand a chart, it is important to read the title and captions.
Tip
P37 B
读懂标题和插图说明
柱状图
饼状图
线形图
1. According to the first chart, which use of the Internet has increased the most during the last five years
Travel booking.
P37 B
View the chart below and answer the question.
Writing
Chart 1
As can be seen/conveyed/illustrated/reflected from the bar chart, over the past five years, the number of people using the Internet for news/search engines/instant messaging/shopping/payment/travel booking has risen/increased from 65% to 82%, from 92% to 98%, from 80% to 90%, from about 39% to 61%, from about 31% to 61%, from about 8% to 40% respectively.
2. What change can you see from the two pie charts
More and more people have been going online using mobile devices.
P37 B
View the chart below and answer the question.
Writing
Chart 2
As can be reflected from the pie charts, over the past five years, the number of users who access the Internet using mobile devices have risen/increased from 69% to 95%, while the percentage of users who access the Internet without using mobile devices has dropped/decreased from 31% to 5%.
View the chart below and answer the question.
3. In the third chart, what change do you notice in the Internet users above 59
An increasing number of people above 59 use the Internet now.
P37 B
Writing
Chart 3
As can be conveyed from the chart, over the past five years, the number of Internet users has been increasing in most age groups, but the 20-39 age group has decreased by about 10%.
1、A recent study shows that ...
最近的一项研究表明……
2、From/According to the survey ..., we can see ...
根据调查……，我们可以看到……
3、We can see from the figures/statistics that ...
我们可以从这些数据中看出……
Talking about changes
There is a rise/an increase/a drop of ... per cent.
The number has risen/increased dropped/decreased from ... to ...
The figure has gone up/gone down/fallen by ... per cent.
The figure/number/percentage remains/stays thesame/unchanged.
有上升/增加/下降……百分比
数字从…上升/下降…到…
数字上升/下降到…百分比
这个数字/数字/百分比保持不变
Planning your writing
Write a report on Internet use. Use your ideas from part C and the information in parts A and B to help you.
A report is a piece of writing that provides information in a formal e to a conclusion based on facts and figures and avoid giving personal opinions when analyzing a situation.
报告是一篇以正式文体提供信息的文章。根据事实和数据得出结论，在分析情况时避免给出个人意见。
Learning about the text type 了解文本类型
To write a report on Internet use, you can follow the structure ：
Briefly introduce the history of the Internet.
Clarify the recent changes on Internet use.
Predict the future of Internet use.
简要介绍一下互联网的历史。
阐明最近在互联网使用方面的变化。
预测未来的互联网使用。
Learning about the structure 了解结构
Use simple and plain language to present your information in a clear and correct way. You can also include facts or statistics in your report.
使用简单明了的语言，以清晰正确的方式表达你的信息。你也可以在报告中包括事实或统计数据。
Learning about the language 了解语言
Report on Middle School Students' Pocket Money
Recently a survey has been done to find out how middle school students spend their pocket money.In this survey, both junior students and senior students spend most of their money on books, snacks and playing games, and still some money goes to clothes, banks, sports and so on.
The survey shows that about 46% of seniors prefer books to snacks (37%) and playing games (31%).On the other hand, only 32% of juniors will spend their pocket money on books, while over a half buy snacks and 46% spend on playing games.Both seniors and juniors would not waste too much money on clothes or put it in banks.
In my opinion, eating too many snacks will not only make us put on weight but also do harm to our health.In addition, if we play games without limits, we'll lose much precious time, which results in low grades.Furthermore, the money is hard earned.I hope we students value our money as well as our time.
A report on Internet use
When the Internet was invented in 1969, no one could have known just how much it would change the world. At that time, computers are large and expensive, thus only some professionals can have access to the Internet. In the 1990s, common people gradually can afford to buy computers, which brought about the increase of Internet use. Over the past 30 years, the whole world has witnessed great changes in the way people use the Internet.
Compared with online activities 5 years ago, more and more people use the Internet for information or E-commerce, including shopping, payment and travel booking, while fewer people use it to send e-mails. Meanwhile, there is a sharp increase of 26 per cent of people using mobile devices to access the Internet. However, the percentage remains almost the same when it comes to Internet users of different ages, with only slight increases in the Internet users from 0 to 19, from 40 to 59 and those above 59, which may be caused the popularity of smartphones among people of all ages.
As far as I am concerned, I think the Internet will definitely play an increasingly important part in our life and it will bring us more convenience and benefits as long as we properly take advantage of it.