北师大版（2019）必修第二册Unit 4 Information technology Lesson 3 Internet and Friendships课件(共35张PPT)

(共35张PPT)
Unit 4
Lesson 3
Internet and Friendships
(1)
新 课 导 入
Let’s talk
Do you think the Internet helps or harms friendships Give your reasons.
Positive aspects Negative aspects
◎ bring people closer together ◎ makes people self-centred
2
Read the first blog post “The Internet Harms Friendships”. Underline the general idea and the topic sentence for each argument.
Skill Builder
Identifying Topic Sentences and Supporting Details
A topic sentence states the general idea or the main point of a text or paragraph. Supporting details give more information about that topic.
Read the text to get the general idea.
Identify one sentence for each argument that states this general idea. This is the topic sentence.
Read the text again. Look for extra information that supports the tropic sentence, e.g. examples, reasons. These are the supporting details.
While-reading
课 堂 学 习
The general idea
While the Internet can bring people closer together, it can also harm friendships.
The topic sentence for each argument
Argument 1: Firstly, talking online is no replacement for face-to-face
contact.
Argument 2: Secondly, the Internet can make people self-centred.
Argument 3: Thirdly, online relationships may not be what they
appear to be.
3
Read the first blog post again. Complete the information on the left side of the diagram.
Negative
aspects
Argument 1
Topic sentence:
Firstly, talking online is no replacement for face-to-face contact.
Supporting details:
Images really cannot replace a real-life smile or municating through a screen makes it more difficult for children to concentrate or show kindness to others.
Negative
aspects
Argument 2
Topic sentence:
Secondly, the Internet can make people self-centred.
Supporting details:
Instead of having proper conversations with their friends, some people are only concerned with their online popularity. In addition, a lot of the content posted on social media is shallow or trivial.
Negative
aspects
Argument 3
Topic sentence:
Thirdly, Online relationships may not be what they appear to be.
Supporting details:
Friendships are built on the basis of trust, and with online communication you can never be 100 percent sure that the people you are chatting to is being honest about who they are.
4
Read the second blog post “The Internet Helps plete the information on the right side of the diagram in Activity 3.
Positive
aspects
Argument 1
Topic sentence:
Firstly, the Internet makes communication much more convenient.
Supporting details:
You can stay in touch with friends no matter where you are or what you are doing.
Positive
aspects
Argument 2
Topic sentence:
Secondly, the Internet has also made communication more fun.
Supporting details:
You can share photos, videos, news stories and websites with your friends online.
Positive
aspects
Argument 3
Topic sentence:
Thirdly, online communication can actually bring people closer to each other.
Supporting details:
Whenever someone needs help, friends from all over the world can immediately provide useful suggestions or information. This makes friends feel loved and cared for.
Post-reading
6
Group work
Think and share.
1. Look at the sentence from paragraph 2 in the first blog post, “It is these skills that enable us to develop lifelong friendships”. What does “these” refer to Do you agree with the statement Why or why not
2. In the second blog post, what does Eileen Kennedy-Moore mean when she says that online friends “fill holes real-life friends can’t” Give your reasons.
Suggested Answers
1. The word “these” refers to social skills, like concentrating or showing kindness to others.
2.Online communication is a solution when there are difficulties with face-to-face communication, i.e. people live far apart (and are friends or have common interests), a person suffers from social anxiety and may find it easier to talk to people online, etc.
7
Are there any other advantages or disadvantages of online friendships If so, list then below.
Advantages Disadvantages
People can keep contact with many friends at the same time.
People get to know more new friends online.
The message can be saved to read later when people have time, and online friends are more tolerate with delayed reply.
Other aspects
Anonymous online friends may be dangerous.
It is easy to be trapped with too many messages, and it takes time.
It is not easy to have thought-provoking communication with online friends.
Other aspects
8
Here are five methods writers often use to support their arguments. Read the two blog posts again. Identify what methods the writers used. Find examples from the text.
a citing ideas from experts or authorities
b giving examples
c using data
d referring to common knowledge
e using comparison and contrast
Post 1. a (lines 5—7); b (lines 12—15); d (lines 8—10)
Post 2. a (lines 16—17); d (lines 12—14); e (lines 6—9)
9
Complete the adjectives. Choose at least five adjectives to write five sentences in the space given. You may express either positive or negative opinions about the use of the Internet.
1 r__w__rding 6 b__ief
2 s__all__w 7 c__ea__ive
3 c__n__e__ient 8 ch__erf___l
4 sel__-cen__ __ed 9 tr__s__ing
5 l__mi__ing 10 th__ __ght-provoking
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北师大 必修第二册
Unit 4
( 英语 )
ENGLISH
Lesson 3
Internet and Friendships
(2)
harm vt.& n. 伤害，损害
E.g. Too much TV-watching can harm children’s ability to learn.
看电视过多会损害孩子们的学习能力。
Key points
[归纳拓展]
【辨析】
harm意为“危害,使人受伤害”,可用于生物,常用于抽象事物。
damage通常指部分性的损坏,往往指价值、用途降低或外表损坏等,也表示可以修复的破坏。
destroy指彻底的毁坏、毁掉或毁灭,往往无法或难以修复。
ruin强调“毁坏”,使美好的事物失去优良的特性或特征,不能恢复。
[即学即练]　
单句语法填空
1. It’s believed that tobacco contains ________(harm) products to health.
句型转换
2. These pills do your lungs harm.
→These pills ______ _______ ______ your lungs.
→These pills _____ ________ ______ your lungs.
harmful
do harm to
are harmful to
replace vt. 取代;接替
E.g. Firstly,talking online is no replacement for face-to-face contact—images really cannot replace a real-life smile or hug.首先,网络交流不能替代面对面的交往——图像确实不能代替真实生活中的微笑或拥抱。
[归纳拓展]
[即学即练]　单句语法填空
1. Paper books will never be ____________ (replace) by e-books.
2. Some people use meal ____________ (replace) to have a balanced diet.
replaced
replacements
focus vi.给予某物关注　n. 焦点
E.g. In my opinion,friends should focus more on face-to-face communication,and less on online communication.
依我之见,朋友之间应该更专注面对面的交流,少些在线交流。
[归纳拓展]
focus...on 集中……于
focus on 关注
in focus　 焦点对准的
out of focus 焦点未对准的
[即学即练]　单句语法填空
1. I found it hard to focus my mind ________ the discussion.
2. With all the eyes ___________(focus) on her,she felt nervous.
on
focused
It is these skills that enable us to develop lifelong friendships.
正是这些技能才使我们能保持终生的友谊。
句式解读: 句中“It is... that”为强调句型。
强调句
(1)基本结构：It is/was＋被强调部分＋that/who＋句子其他部分。
It is the people who obey the rules that (who) matter.
(2)一般疑问句的强调句型：Is/Was it＋被强调部分＋that/who＋句子其他部分？
Was it three years ago that he went to America for further study
(3)特殊疑问句的强调句型：疑问词(被强调部分)＋is/was＋it＋that＋句子其他部分？
When was it that you got promoted？你是什么时候升职的？
(4)not...until...结构的强调句型：It is/was not until...that...
It was not until near the end of the letter that she mentioned her own plan.
[即学即练]　单句语法填空
1. It was only when the car pulled up in front of our house ______ we saw
Lily in the passenger seat.
2. ______ was at 5 o’clock that the visitors finally arrived at Pudong
International Airport.
3. —Were all the three people in the car injured in the accident
—No, it was only two passengers __________ got hurt.
that
It
that/who
Focus on language: Compound Words
复合词
1.复合名词
名词+名词：football 足球
名词+动词：snowfall 下雪
名词+动词-ing形式：horse-riding 骑马
名词+介词+名词：daughter-in-law 儿媳
形容词+名词：greenhouse 温室
副词+名词：income 收入
介词+名词：afternoon 下午
动词-ed形式+副词：grown-up 成年人
2.复合形容词
名词+形容词：world-famous 世界闻名的
名词+动词-ing形式：peace-loving 热爱和平的
名词+动词-ed形式：heart-broken 伤心的
形容词+名词：long-distance 长途的
形容词+形容词：dark-blue 深蓝色的
形容词+动词-ed形式：new-born 新出生的
副词+动词-ing形式：hard-working 勤劳的
数词+名词：first-class 头等的
数词+名词+形容词：ten-year-old 十岁大的
3.复合动词
名词+动词：water-cool 用水冷却
形容词+动词：quick-charge 快速充电
副词+动词：outact 行动上胜过
4.复合代词
形容词+名词：something 某物
形容词+副词：anywhere 任何地方
[即学即练]　完成句子
1. It was only a ____________(15分钟的) trip.
2. These students are all from _________________(说英语的)
countries.
3. We should reduce the emission of ____________(温室) gases.
4. ____________(在……下画线) the sentences you don’t know.
fifteen-minute
English-speaking
greenhouse
Underline
10
Complete the compound words with a word from the circles. Then use them in the summary below.
1 friend _____
2 any _____
3 per _____
4 web _____
Compound Words
site
ship
cent
thing
5 on _____
6 self- _____
7 real- _____
8 smart _____
phone
line
centred
life
ship
thing
cent
site
line
centred
life
phone
Some people believe that the Internet has many negative aspects. Talking to people 1________ or having a 2________ with someone you only talk to on the Internet isn't a replacement for 3________ communication. While it can connect you with other people who use a 4__________, face-to-face contact with others is important to help you maintain healthy relationships. This argument is thought-provoking because it shows that people still need face-to-face communication with others today. In addition, spending too much time on the Internet can make you 5__________ because you can become obsessed with popularity and gaining followers. Finally, you need to be careful with various 6________ because you can never be 100 7________ sure that 8________ you read online is true.
online
friendship
real-life
smartphone
self-centred
websites
percent
anything
1. Can you quickly name the advantages and disadvantages of
the Internet from this lesson
2. Can you say the kinds of compound words