Unit 4 Information Technology Lesson 3 Internet and Friendships 词汇+知识点课件-2025-2026学年高中英语北师大版必修第二册

该高中英语课件聚焦北师版必修二Unit 4信息技术主题Lesson 3词汇，涵盖单词领读、词性拓展、重难点词精讲及随堂测试。以“单词预习检测”导入，衔接词性转换夯实基础，再通过重难点词（如argument, harm, in addition）的语境解析与句型应用，搭建从词汇认知到语言运用的学习支架。 其亮点在于融合语义网络图（如content多义梳理）、词源解读（如concentrate构词分析）及生活实例（如“果汁浓缩液”关联concentrate用法），助力学生构建系统词汇网络，提升语言能力与思维品质。通过“佳句赏读+语法填空+写作”的分层训练，既强化知识应用，又培养学习策略，教师可直接用于课堂，高效提升教学效果。

Unit 4 Information Technology Lesson 3 词汇 1 目 录 01. 单词领读 02. 词性拓展 03. 单词讲解 04. 随堂测试 单词领读 01 伤害；损害 vt __________ 论据；理由；论点 n __________ 取代；接替；更换 vt __________ 拥抱 n __________ 专心；集中（注意力、思想等） vi __________ 关注的；关切的 adj __________ 关心…… __________ 有益的；有意义的；报酬高的 adj __________ harm argument replace hug concentrate / focus concerned be concerned with rewarding 单词预习检测---英汉互译 5 9.补报答；酬劳；奖赏 __________ 10. 增添；添加 n __________ 11. 另外；加之 __________ 12. （书籍、文章、演讲等的）主要内容 n __________ 13. 浅的；肤浅的 adj __________ 14. 根据；基础 n __________ 15. 百分之…… n __________ 16. 意见；看法；主张 n __________ reward addition in addition content shallow basis percent opinion 单词预习检测---英汉互译 6 17. 关注；集中于 __________ 18. 维持；保持 vt __________ 19. 智能手机 n __________ 20. 平板电脑 n __________ 21. 短暂的；简短的；简洁的 adj __________ 22. 有创造力的；创造性的 adj __________ 23. 权威人士；专家 n __________ focus on maintain smartphone tablet brief creative authority 单词预习检测---英汉互译 7 24.补concentration n __________ 25. content adj __________ 26. trivial adj __________ 27. limiting adj __________ 28. emoji n __________ 29. thought-provoking adj __________ 30.补cite vt __________ 集中；专心 满意的；满足的 不重要的；琐碎的；微不足道的 限制性的 绘文字；表情符号 发人深省的；令人深思的 引用；引述 单词预习检测---英汉互译 8 词性拓展 02 1．harm vt.&n.伤害，损害 →harmful adj.有害的，导致损害的 →harmless adj.无害的；无恶意的 2．argument n．论点；论据 →argue vt.& vi.论证；争辩；争论 3．concentrate vi.专注，专心；集中注意力 →concentrated adj.集中的；全神贯注的；浓缩的 →concentration n．集中；专心；浓度 4．rewarding adj.有益的；有意义的 →reward n．奖励；回报；报酬vt.奖励；奖赏；给……以报酬 5．addition n．增添；添加 →add vt.加；增加，补充说；增添 →additional adj.附加的，额外的→additionally adv.此外 6．basis n．基础；基点 →base vt.以……为基础n．根基，基底；基地；源泉，基础 →basic adj.基本的，基础的 →basically adv.基本上，从根本上说 7．limiting adj.局限的，限制性的 →limit vt.限制；限定n.界限；限度 →limited adj.有限的→limitless adj.无限的 8．brief adj.简洁的，简明的 →briefly adv.短暂地 重难点词精讲 03 1. argument   课文原句： Identify one sentence for each argument that states this general idea.(教材P14) ★ argument n．论点；论据；争论 (1)have an argument with sb.about/over sth. 与某人就某事争吵 an argument for/against sth.支持/反对某事 (2)argue v．争吵；争辩；表明 argue with sb.about/over sth.就某事与某人争吵 argue for为……辩护 argue against争辩；反对 argument 谈到“argument”一词，你可能会联想到怒气冲冲的人在“争吵”的画面。“争论；争吵”是你熟悉的argument的释义，但它还有另外一层释义——“论据”, 从某种程度上说，是常见释义“争论”在程度上的加深。通过其英语释义（a reason or set of reasons that sb uses to show that sth is true or correct）即“用来证明某事是真的或正确的理由”，也可以更好地理解这层释义。 Talking online is no replacement for face-to-face contact — images really cannot replace a real-life smile or hug. The student union will hold a special meeting in January to hire someone to replace the secretary.人教新必修③ – 2 We’d be happy to replace the radio for you. 课文 14 [佳句赏读]　感悟句意·翻译 ①At present，one of the arguments in favour of the new airport is that it will be beneficial to the people around. ②I’m sorry to have an argument with you yesterday，but you shouldn’t have made the same error a third time. ③It’s no use arguing with him about this matter. 一、写出下列句子中画线词的汉语释义。 1. It is no use arguing with Bill because he will never change his mind. ______________ 2. Some people choose not to eat meat because they believe that it is cruel to eat animals, but others argue that they can eat meat and still be kind to animals. ______________ 3. A chimpanzee (黑猩猩) can’t win an argument with a modern man, but it can tear the man apart like a rag doll (布娃娃). ______________ 4. His strong arguments persuaded me to accept his conclusions. ______________ argument 争论 / 争吵 论证 / 争辩 争论 / 争吵 论据 / 理由 16 二、在空白处填入 1个适当的单词或括号内单词的正确形式。 1. They have argued ___________ each other for years ___________ the best way to grow potatoes. 2. When you present reasons why you believe in something, you argue ________ it. 3. Father argued ___________ an increase in my pocket money. His ___________ (argue) is that I used to spend all my pocket money on clothes and snacks. 4. The child had an argument ___________ his friend ___________ what game to play. against with about / over for argument with about / over 17 课文原句：The Internet Harms Friendships(教材P15) ★ harm vt.& n．伤害；损害 2. harm 拓展 (1)do/cause harm to...对……造成伤害 There is no harm in doing sth.做某事无害。 (2)harmful adj.有害的 be harmful to...对……有害的 (3)harmless adj.无害的 [佳句赏读]　感悟句意·翻译 ①While the sun’s rays can age and harm our skin，they also give us beneficial vitamin D. ②As we all know，plastic does great harm to the environment. →As we all know，plastic is very harmful to the environment. [单句语法填空/单句写作] ①The polluted air is________(harm) to our health. ②Please depend on it that I won’t do any harm____ you. ③告诉他这个消息没有坏处。 ____________________________________________________. harmful to There is no harm in telling him the news 课文原句：In addition，a lot of the content posted on social media is shallow or trivial.(教材P15) ★in addition 除此之外 3. in addition (1)in addition to＋宾语(名词/代词/doing)除……之外 (2)add v．增加；补充说 add to增添 add up把……加起来 add up to总计为 (3)additionally adv.另外；而且 (4)additional adj.额外的 [佳句赏读]　感悟句意·翻译 ①In addition，the team performed a separate experiment to confirm the findings last month. ②In addition to reading for knowledge，we read for fun and inspiration. ③Remember：little steps add up to big dreams. ④Colorful umbrellas add to a lively atmosphere in the summer streets. [单句语法填空/单句写作] ①I can post the letter for you.____addition，doing some walking does me good. ②Working out in the morning provides ________(addition) benefits. ③ In addition ____ the school，the village has a clinic，which was also built with government support. ④除了英语，她还很擅长历史。 ___________________________________________________ ______________________. In additional to In addition to English，she also has a good command of history 课文原句：Friendships are built on the basis of trust...(教材P15) ★basis n．基础；基点 4. on the basis of (1)on the basis of...在……的基础上 (2)base n．基地；基础 v．以……作基础 base sth.on以……为基础(常用被动形式be based on ) (3)basic adj.基本的；主要的 (4)basically adv.基本上；大体上 [佳句赏读]　感悟句意·翻译 ①Statement should be made on the basis of fact. ②The film Hi，Mom is based on a true story of Jia Ling. ③Basing an important decision more on emotion than on reason，you will regret it sooner or later. 作为一个基于情感而非理性的重要决定，你迟早会后悔的。 [单句语法填空/单句写作] ①_______(base) on a true story of the writer，the story is extremely touching. ②I went to see my grandma ____ a weekly basis. ③Critics say these programmes are________(basic) meaningless， but people are still watching. ④你应该每天都练习英语口语。 _________________________________________________. Based on basically You should practice your spoken English on a daily basis 课文原句:It is these skills that enable us to develop lifelong friendships.(教材P15) ★It is/was＋被强调部分＋that/who＋其他成分 本句式为强调句型，对主语these skills 进行强调。其基本构成如下： It is/was＋被强调部分＋that/who＋其他成分，该句型可强调主语、宾语、表语或状语等，强调人时可用that/who；强调物只能用that。 句式变化： 一般疑问句：Is/Was it that＋被强调部分＋that...？ 特殊疑问句：特殊疑问词＋is/was it that...？ 5.强调句型 [佳句赏读]　感悟句意·翻译 ①It is you who are to blame for the failure of the experiment. ②It is only when you experience the disaster that you will know how terrible it is. 只有当你经历了灾难，你才会知道它有多可怕。 ③Was it her hard work and great determination that made her successful? ④Where was it that you picked up the wallet? [对以下画线句子成分进行强调] ①My father once studied at the university. _______________________________________________________. ②The police were in search of a Picasso’s valuable painting. _______________________________________________________. ③He didn’t come back home from work until 7 o’clock. _______________________________________________________. It was at the university that my father once studied It was not until 7 o’clock that he came back home from work It was a Picasso’s valuable painting that the police were in search of (1)本句是一个复合句。no matter where和no matter what 引导让步状语从句。 (2)no matter意为“不管；无论”， 与what/where/how/who/which等特殊疑问词连用引导让步状语从句，相当于whatever/wherever/however/whoever/whichever等。 (3)特殊疑问词＋-ever引导名词性从句，不可以分解为no matter＋特殊疑问词。 6. no matter where 课文原句:You can stay in touch with friends no matter where you are or what you are doing.(教材P16) ★ “no matter＋特殊疑问词”引导让步状语从句 [佳句赏读]　感悟句意·翻译 ①However hard I tried to think about it，what he said didn’t really get across to me. ②Whatever difficulties you meet，you should not give up your dream. ③No matter how smart you are，you must work hard and have patience. [单句语法填空/单句写作] ①________ difficult the task is，you should not give up. ②________ did this will sooner or later be caught and be punished. ③无论你去哪儿我都跟随着你。 ____________________________. ④不要孩子想要什么就给孩子什么。 ________________________. Wherever you go，I will follow you Don’t give a child whatever he wants However Whoever 32 课文原句: ...images really cannot replace a real-life smile or hug.(教材P15) ★replace vt.取代；代替 (1)replace A with/by B　用B代替A (2)take the place of＝take one’s place代替 take place发生 in place合适的；在适当位置 in place of代替；取代 7.replace 一、写出下列句子中画线词的汉语释义。 1. The house I grew up in has been taken down and replaced by an office building. ____________ 2. You may read any of these magazines, only you must replace it after reading. ____________ 二、在空白处填入 1个适当的单词或括号内单词的正确形式。 1. It is still under discussion whether the old bus station should be replaced ___________ a modern hotel or not. 2. My magic water bottle will be a ___________ (replace) of the traditional one which can change the temperature of the inside water automatically（自动地）according to the changes of the outer environment. 取代 放回原处 with / by replacement replace 34 ①Nervousness and fear ____________ with joy. 紧张和恐惧被喜悦所取代。 ②After dinner，an expression of thanks to the host would be ____________. 饭后向主人道谢是合适的。 ③Great changes _______________ in the way people communicate in recent years. 近年来，人们的交流方式发生了巨大变化。 ④You can use yogurt ____________ cream to make this salad. 你可以用酸奶代替奶油来做这道沙拉。 were replaced in place have taken place in place of 课文原句: In addition，a lot of the content posted on social media is shallow or trivial.(教材P15) ★content n．内容 adj.满意的；知足的 be content with＝be satisfied with对……满意；满足 be content to do sth.乐于做某事 8.content 含有的内容 基本义 容器等含有的内容 书刊等含有的内容 书籍、文章等含有的主要内容 食物含有的内容 （容器等）容纳的东西 （书刊等的）目录 （书籍、文章、演讲等的）主要内容 含量 content1语义网络图 写出下列句子中画线部分的汉语释义。 1. They reduced their products’ sugar content. __________ 2. I am very content with my life at present. __________ 3. A bag with its precious contents was missing. __________ 4. The content of your essay is excellent, but it’s not very well expressed. __________ 5. We cannot go abroad this year, so we’ll have to content ourselves with a holiday in London. __________ 6. You can read to your heart’s content in the library. __________ content 含量 满意 / 满足 东西 / 物品 主要内容 使满足 / 使满意 尽情地 38 ①Those who _______________ their present situations will surely make no big difference in life. 那些满足现状的人在生活中一定不会有大作为。 ②The ___________(content) of the meeting are still unknown to most of the people present. 在场的大多数人都还不知道会议的内容。 ③My parents are content _______(live) in the countryside，where the air is clean and fresh. 我父母很乐意住在乡下，那儿的空气新鲜干净。 ④Your tone of voice is __________________________________ ___________________. 你的讲话声调和你要讲的内容同样重要。 are content with contents to live as important as the content of what you have to say 课文原句: In my opinion，friends should focus more on face-to-face communication.(教材P15) ★focus...on... 把……对准/集中于…… (1)focus on＝concentrate on 关注；集中于 focus one’s attention/mind/energy on/upon 把某人的注意力/精力集中于 (2)the focus of attention 关注的焦点 9.focus on focus 写出下列句子中画线部分的汉语释义。 1. When you stand up to give a speech, you focus on the “public” at the expense of the “speaking”. _________ 2. I think Dave likes to be the focus of attention. _________ 3. These topics have recently come into sharp focus. _________ 4. The children’s faces are badly out of focus in the photograph. _________ 聚焦于；关注 关注的焦点 成为焦点 模糊不清 ①Getting addicted to virtual worlds makes it hard to ________  the other things in real life. 沉迷于虚拟世界让人很难关注现实生活中的其他事情。 ②He sat in the armchair，with all his attention_______(focus) on the World Cup match. 他坐在扶手椅上专注地观看世界杯比赛。 ③She is shy and doesn’t want to be _________________. 她性格腼腆，不想成为人们关注的焦点。 focus on focused the focus of attention 课文原句:While the Internet can bring people closer together，it can also harm friendships.(教材P15) ★while的用法 (1)while引导让步状语从句，意为“虽然；尽管”(常放于句首)。 (2)while引导时间状语从句，意为“当……的时候”。 (3)while用作并列连词，意为“然而”，表对比。 (4)while用作名词时，意为“一段时间，一会儿”。 10. while的用法 ①________ online shopping has changed our life，not all of its effects have been positive. 尽管网购已经改变了我们的生活，但并非它所有的影响都是积极的。 ②Robert held the view that the Internet did harm to friendship ________Cathy thought that it was beneficial to friendship. 罗伯特认为网络伤害了友谊，而凯西认为网络对友谊有好处。 ③______________________，I came across one of my former teachers. 在街上走路时我遇到了原来的一位老师。 ④Give your body and brain a rest by stepping outside __________，exercising or doing something you enjoy. 出去走走，锻炼一下或做一些你喜欢的事情，让你的身心休息一会儿。 While while While walking in the street for a while 课文原句:...communicating through a screen makes it more difficult for children to concentrate or show kindness to others.(教材P15) ★make it＋adj.＋(for sb.) to do sth. (1)句中的makes it more difficult for children to concentrate为make it＋adj.＋(for sb.) to do sth.结构，其中it 是形式宾语，difficult 是宾语补足语， 真正的宾语是后边的不定式。 (2)当复合宾语中的宾语是不定式(短语)、动名词(短语)或宾语从句时，往往把宾语放在它的补足语后面，而用it作形式宾语，放在宾语补足语前。常用的动词有make，think，believe，find，consider，feel等。 11.it 形式宾语 ①The heavy rain __________________________ for the survivors. 大雨使我们更难搜寻幸存者。 ②The Internet __________________ for us to communicate with others conveniently. 网络使我们能够便利地与别人交流。 ③Our teacher _________________________ speaking English everyday. 我们老师规定每天都要练习口语。 ④I found ______easy to get along with my new workmates. 我发现跟新同事相处很容易。 made it more difficult for us to search makes it possible makes it a rule to practice it 生活中的 concentrate 当我们喝进口果汁的时候可以注意下商标，上面往往有“apple juice concentrate”“grape juice concentrate”等，那么大家知道concentrate在这里是什么意思吗？ 浓缩 concentrate 词源解读：concentrate是由con- (together 共同, 一起) + center + -ate构成，来到一个共同的中心 →“（使）集中”。 concentrate ■ vt & vi （使）聚集于；（使）浓缩： Italian industry is concentrated mainly in the north.  专心；集中（注意力、思想等）： Communicating through a screen makes it more difficult for children to concentrate or show kindness to others. “集中”具体的人或物 “集中”抽象的时间精力等 同义异构：focus 课文 concentrate (sth) on (doing) sth: We must concentrate our efforts on improving education. When you concentrate on one task you can get it done faster and better. ■ n [C] & [U] 浓缩物；浓缩液： orange juice concentrate ► concentrated adj 浓缩的；聚集的；全神贯注的 【词汇拓展】 concentration n [C] & [U] 集中；专心： Concentration on your studies will result in good grades. Driving requires total concentration. 49 concentrate 语义网络图 （使）聚集于 （使）浓缩 专心；集中 （注意力、思想等） （使）集中 concentrate 基本义 使人或物“集中” 使液体等“集中” 使时间、精力等“集中” 具体到抽象 一物到另一物 一、在空白处填入 1个适当的单词或括号内单词的正确形式。 1. Listening well also requires total _________________ (concentrate). 2. He made a ________________ (concentrate) effort to improve work. 3. To be effective, you need to identify your strengths and concentrate ________ them. concentration concentrated on concentrate 二、根据汉语提示，完成句子。 1. Be quiet — let me _______________（专心做）my homework. 2. In that country, women _______________（集中在）a small number of occupations. 3. I’m ___________________________（集中精力于）writing a book. concentrate on concentrate in concentrating my efforts on 前缀 词根 单词 con- (together) -tribute: 贡品、贡金 contribute 贡献 -duct: to lead 引导 conduct 引导；带领 -flict: to strike 击打 conflict 战斗；冲突 -tain: to hold 拿 contain 包含；容纳 -nect: to blind 连接 connect 连接；连结 -struct: to build construct 建筑；构筑 -tact: to touch 接触 contact 触碰；接触 -tract: to draw 拉 contract 缩小；收缩 -test: to bear witness 见证 contest 比赛；竞争 -text: to weave 编织 context 上下文；语境 单词串串记 —— 前缀con- 52 个人的“意见” 群体的“意见” 专家的“意见” 意见；看法；主张 观点；舆论 专家意见；专业意见 opinion语义网络图 意见 opinion 基本义 一、翻译下列词块。 1. 在某人看来 _________________________ 2. 征求某人的意见 _________________________ 3. 某人的个人观点 _________________________ 二、根据汉语提示，完成下列句子。 1. Everyone has the right to _________________________（表达观点）. 2. The media has a powerful influence on _______________（舆论）. 3. Whether or not this is useful is __________________（看法问题）. ask (for) / seek sb’s opinion sb’s personal opinion public opinion opinion in sb’s opinion express an opinion / an idea a matter of opinion maintain语义网络图 维持;保持 maintain （基本义） “维持”抽象事物 “维持”具体事物 保持；维持 维护；保养 坚持认为 “维持”观点 一、写出下列句子中maintain的汉语释义。 1. The building is maintained by a private nonprofit organization. _____________ 2. Some people maintain that watching violence on TV is one of the major causes of aggressive behaviour and crime in society. _____________ 3. The fifty-two-week money challenge is simple and if it is maintained, it will result in 1378 dollars in your savings account each year. _____________ 4. They barely earn enough to maintain themselves and their four children. _____________ 保持；维持 坚持认为 维护；保养 maintain 养活；供养 二、根据所给汉语，完成下列句子。 1. Twenty-five percent of the savings are used to ________________（维护系统）. 2. The choice is clear: eat food with empty calories and you will gain weight, eat nutritious food and you will ____________________（保持体重）or lose weight. maintain the system maintain your weight authority词源解读 在古欧洲，能解决争端的书或文章等都是有权威的，而能写出这些书籍和文章的人即作者也都是很有权威的人。在历史发展过程中，由“有权威的篇章”这一具体的概念衍生出抽象释义“权威；权力”等。authority的各层释义都与“权威”有关，故各释义衍生的基础即基本义为“权威”。 author (n 作者) + -ity authority n  [C] 权威人士；专家；泰斗 (specialist)： He is an authority on vocabulary.  [U] 权威；权力；当权 the power to give orders to people： Teenagers, when they grow up, begin to question their parents’ authority and wisdom. Creativity results from challenging authority. 2020 天津 Could I speak to someone in authority (= who has a position of power) here, please? 59  [U]（正式的）许可；授权 the official right or permission to do sth： No one may enter without my authority.  [C]［常用复数］官方；当局： health authorities We reported the train accident to the authorities. 60 authority语义网络图 权威 （基本义） 权威人士；专家；泰斗 权威；权力；当权 有“权威”的人士 许可；授权 官方；当局 有“权威”的力量 得到“权威”的同意 有“权威”的机构 authority 写出下列句子中画线部分的汉语释义。 1. The authorities have refused to let him enter the country.__________ 2. Persons in Asian cultures may view silence as a sign of respect, particularly to an elder or a person in authority. __________ 3. He has the authority for handling this matter. __________ 4. She is one of the world’s leading authorities on fish. __________ 5. I’ll give my lawyers authority to act on my behalf. __________ 当局 权威 权利 专家 授权 62 写出下列句子中画线部分的汉语释义。 1. Honesty is the basis of friendship. __________ 2. We’re going to be meeting there on a regular basis. __________ 3. She was chosen for the job on the basis of her qualifications（资历）and ideas. __________ 4. On the basis of evidence we deduced（推断）that he was guilty. __________ 5. This article will form the basis for our discussion. __________ basis 友谊的基础 定期地 / 经常地 由于 / 因为 根据 作为……的基础 63 随堂测试 04 Ⅰ.单词拼写 1．I think the movie is pretty _______(肤浅的)，which isn’t worth recommendation. 2．Despite living in different countries，the two families have ____ ___________(维持)close links. 3．In my view，physical stores will exist along with online stores and will never be_________. 4．If we miss a night’s sleep，we will find it hard to _________ and learn new information. 5．Reading a book can be a _________(有益的) experience for both of you. shallow maintained replaced concentrate rewarding 6．The________(专家) has confirmed that all these are gossips，so you needn’t be concerned. 7．The teacher gave us a _______(简洁的) introduction about how to carry out the experiment. 8．Parents are supposed to focus more on developing children’s ____(创造性的)thinking and innovative ability. 9．In my _______，we work not only for making a living but also for a sense of achievement. 10．The drought did a lot of_______ to the crops. authority briefly reative opinion harm Ⅱ.单句语法填空 1．____ we all know，important social skills are developed through direct contact with others. 2．I’d like to begin by____(brief) introducing the goods we produce. 3．It was only when her car pulled up in front of our house ____we saw Lily in the passenger seat. 4．The boy is good at maths ____ his sister is good at Chinese. 5．The best way _______(learn) is to keep yourself informed of the latest information. As briefly that while to learn Ⅱ.单句写作 1．正是这些现实生活中的社交技能让我们能发展终生的友谊。 (强调句型) _________________________________________________________________________________________________. 2．无论有多忙，父母都应该抽出一些时间来陪伴孩子。(no matter how) ___________________________________________________________________________________________. 3．良好的亲子关系应该建立在相互理解和尊重的基础上。(on the basis of) _______________________________________________________________________________________________. It is the social skills in real life that enable us to develop lifelong friendships. No matter how busy they are，parents should spare some time to accompany their children. A good parent-child relationship should be set up on the basis of mutual understanding and respect. 4．我遇到了一些困难，但是跟你的相比根本就算不上什么。(compare...to...) __________________________________________________________________________________________________. 5．简而言之，生活的乐趣在于做我们喜欢做的事情。(in brief) __________________________________________________. I met some difficulties，but they are nothing compared to yours. In brief，the pleasure of life lies in doing what we like. THANK YOU x264 0.128.2216+688+32 a17ff54 tMod [8-bit@4:2:0 X86] $