北师大版（2019）必修第二册Unit 4 Information technology Lesson 3 Internet 课件(41张ppt)

(共41张PPT)
Unit 4 Information Technology
Lesson 3 The Road to Destruction
Vocabulary
1. harm
do harm to = be harmful to 对……有害
mean no harm 无恶意
come to no harm 没有受到伤害/损害
do more harm than good 弊大于利
do no/ great harm to 对……无害/ 有很大害处
There is no harm in doing sth. 做某事无害。
harmful adj. 有害的
harmless adj. 无害的
练习：I won't do any ________ to you.
harm
2. argument
have an argument over/ about/ on sth. 就……展开讨论
argue with sb. about/ on/ over sth. 与某人就某事争吵/ 争辩
argue for/ against 据理力争/ 反对……
argue sb. into/ out of doing sth. 劝说某人做/ 不做某事
quarrel with sb. about/ over sth. 为某事和某人争吵
discuss sth. with sb. 和某人讨论某事
persuade sb. into/ out of doing sth. 劝阻某人做/ 不做某事
练习：There is a strong ______________ for the appeal.
argument
Vocabulary
3. replace
replace sth. with/ by 用……替代；以……接替
replaceable adj. 可替换的；可替代的
irreplaceable adj. 不可替代的
replacement n. 替换；更换；替代品
take the place of 代替；取代
in place of (=in one's place) 代替
instead of 代替，而不是
练习：He will be difficult to __________ when he leaves.
replace
Vocabulary
4. concentrate
concentrate sth. on (doing) sth. 将……致力于（做）……
concentrate one's attention on 致力于……；把注意力集中在……
concentrate on sth. 集中时间做某事；全神贯注于……
be absorbed in 全神贯注于 focus on 集中于
centre sth. on 将某物集中在
bury oneself in sth. 埋头于或专心致志于某物
fix one's eyes/ attention/ thoughts on 全神贯注于
devote… to…/ be devoted to 献身于，全身心地投入
spare no effort to do sth. 不遗余力地做某事
练习：We must ______________ our efforts on improving education.
concentrate
Vocabulary
5. content
with content 满意地；满足地
be content to do sth. 心满意足/ 愿意做某事
content oneself with 用……使自己满意/ 满足
be/ feel content with 对……感到满意
be satisfied with 对……感到满意
be pleased with 对……感到满意
练习：The book is rich in ___________.
content
Vocabulary
6. particularly
in particular (=particularly) 尤其；特别；格外
be particular about 对……挑剔/ 过分讲究
in every particular 在每个细节上
nothing in particular 没什么特别的
练习：We shouldn't look down on others, _____________ the disabled.
particularly
Vocabulary
7. opinion
in one's opinion (=in one's view) 在某人看来
have a good opinion of 对……评价好
have a bad opinion of 对……评价不好
have a high opinion of 对……评价高
have a low opinion of 对……评价低
opinions on/ about/ of... 对……的看法
练习：The boss has a very high ___________ of her.
opinion
Vocabulary
8. response
response n. 回答，回复
respond vi. 作回答；作出反应（常与to连用）
responsible adj. 有责任的，有义务的，可信赖的
responsibility n. 责任，负责
responsibly adv. 明事理地；认真负责地
练习：They made no ___________ to my call for help.
response
Vocabulary
Leading in
Do you think the Internet helps or harms friendships Give your reasons. Write them down in the following table.
ACTIVATE AND SHARE
Positive aspects Negative aspects
·brings people closer together · · ·makes people self-centred
·
·
Read the first blog post "The Internet Harms Friendships". Underline the general idea and the topic sentence for each argument.
READ AND EXPLORE
Read the first blog post again. Complete the information on the left side of the diagram.
READ AND EXPLORE
Read the first blog post again. Complete the information on the left side of the diagram.
READ AND EXPLORE
Negative aspects
Argument 1
Topic sentence: 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.
Read the first blog post again. Complete the information on the left side of the diagram.
READ AND EXPLORE
Negative aspects
Argument 2
Topic sentence: 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. A lot of the content posted on social media is shallow or trivial.
Read the first blog post again. Complete the information on the left side of the diagram.
READ AND EXPLORE
Negative aspects
Argument 3
Topic sentence: 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 are being honest about who they are.
Read the second blog post "The Internet Helps plete the information on the right side of the diagram in Activity 3.
READ AND EXPLORE
Read the second blog post "The Internet Helps plete the information on the right side of the diagram in Activity 3.
READ AND EXPLORE
Positive aspects
Argument 1
Topic sentence: The Internet makes communication much more convenient.
Supporting details: You can stay in touch with friend no matter where you are or what you are doing.
READ AND EXPLORE
Positive aspects
Argument 2
Topic sentence: The Internet has also made communication more fun.
Supporting details: You can share photos, videos, news stories and websites with your friends online.
Read the second blog post "The Internet Helps plete the information on the right side of the diagram in Activity 3.
READ AND EXPLORE
Positive aspects
Argument 3
Topic sentence: 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.
Read the second blog post "The Internet Helps plete the information on the right side of the diagram in Activity 3.
Group Work
Choose one position. Each member of the group presents one argument to support your position based on the notes taken.
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
The word "these" refers to social skills, like concentrating or showing kindness to others.
Group Work
Think and share
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.
Online communication is a solution when there are difficulties with face-to-face communication, i.e. people live far apart, a person suffers from social anxiety and may find it easier to talk to people online, etc.
Are there any other advantages or disadvantages of online friendships If so, list them 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.
·Some people may feel safer with text-based communication rather than face-to-face communication.
·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
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.
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.
Answers:
1. rewarding 2. shallow
3. convenient 4. self-centred
5. limiting 6. brief
7. creative 8. cheerful
9. trusting 10. thought-provoking
FOCUS ON LANGUAGE:
COMPOUND WORDS
Look at the Word Builder. Match the words (1–8) with the endings (a-h) to form common collocations. Then use the collocations to complete the summary.
FOCUS ON LANGUAGE:
COMPOUND WORDS
Look at the Word Builder. Match the words (1–8) with the endings (a-h) to form common collocations. Then use the collocations to complete the summary.
1 friend + ship = friendship 2 any + thing= anything
3 per + cent = percent 4 web + site = website
5 on + line = online 6 self- + centred = self-centred
7 real- + life = real-life 8 smart + phone = smartphone
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
online
friendship
real-life
smartphone
FOCUS ON LANGUAGE:
COMPOUND WORDS
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.
FOCUS ON LANGUAGE:
COMPOUND WORDS
self-centred
websites
percent
anything
EXPRESS YOURSELF
Does the Internet help or harm friendships Express your opinion by using examples or personal experiences.
Debate
语法：复合词
复合词是由两个单词组合而成的。通常第一个词修饰第二个词，表达其主要特征，第二个词决定复合词的词性。复合词有不同词性，如
形容词 (online, self-centered, real-life)，
名词(friendship, percent, website) 和
动词 (babysit, overdo)。
1. 合成名词常见构词法
(1) n. + n.
penfriend (笔友)，classroom (教室)，newspaper (报纸)
(2) adj. + n.
greenhouse (温室)，blackboard (黑板)，highway (高速公路)，long-jump (跳远)
语法：复合词
1. 合成名词常见构词法
(3) v.-ing + n.
waiting-room (候诊室，等候室)，swimming-pool (游泳池)，washing-machine (洗衣机)，dining-room (餐厅) ，sleeping pills (安眠药)
(4) v. + n.
pickpocket (小偷，扒手)，speakbox (对讲机)
语法：复合词
1. 合成名词常见构词法
(5) n.+ v.-ing
handwriting (书法)，sun-bathing (日光浴)
(6) v. + adv.
warm-up (热身练习)，make-up (化妆品)，break-in (闯入)，get-together (聚会)
(7) adv. + n.
overcoat (长大衣)，bystander (旁观者)，outbreak (爆发)
语法：复合词
2. 合成形容词常见构词法
(1) adj. + v.-ing
good-looking (相貌好看的)，easy-going (容易相处的)
(2) adv. +v.-ing
hard-working (工作努力的)，far-reaching (影响深远的)
语法：复合词
2. 合成形容词常见构词法
(3) n. +过去分词
state-owned (国有的)
(4) n. +v.-ing
peace-loving (爱好和平的)
语法：复合词
2. 合成形容词常见构词法
(5) adv. +过去分词
well-known (著名的)，widespread (广泛传播的)
(6) adj. +过去分词
kind-hearted (好心的)，ready-made (现成的)
语法：复合词
2. 合成形容词常见构词法
(7) n. +adj.
duty-free (免关税的)，self-satisfied (自负的，自我满足的)
(8) adj. + n.
large-scale (大规模的)，high-class (高级的)
语法：复合词
练习
1. _______________ (观光) took up the whole morning.
2. Finally they reached a _______________ (十字路口).
3. Smoking is not allowed during ____________ (起飞).
4. They helped us to map out a _______________ (长期的) plan.
5. ____________ (户外的) exercise will do you good.
Sightseeing
cross-road
take-off (s)
long-term
Open-air
练习
6. Are you ___________ (晕机的)
7. He is lively and _______________ (外向的).
8. In this aspect, clouds are like _______________ (温室气体).
9. What kind of food do you have in your _______________ (餐厅)
10. He holds the ____________ (跳远) record.
airsick
out-going
greenhouse gas
dining-room
long-jump