Unit4 Information Technology Lesson 3 Internet and friendships 知识梳理和练习 课件 -2026-2027学年高中英语北师大版必修第二册

该高中英语课件围绕“互联网与友谊”主题，系统梳理harm、argument等核心词汇（含释义、同根词、搭配）及动名词作主语、强调句型等语法点，通过词汇练习、语法填空、课文阅读等环节，构建从基础语言知识到综合运用的学习支架。 其亮点在于以语言能力培养为核心，通过词汇同根词拓展（如harm-harmful-harmless）、语法实例辨析（如强调句型“It is...that...”）提升学生语言理解与表达能力，结合阅读理解和写作升级任务发展思维品质，分层练习（基础达标、关键进阶）助力学生主动调适学习策略。学生能夯实基础并提升综合运用能力，教师可直接利用系统资源优化教学效率。

UNIT 4　INFORMATION TECHNOLOGY LESSON 3　INTERNET AND FRIENDSHIPS 2026-2027学年高中英语北师大版必修第二册 广东专版 语言知识梳理 基础要求达标 目 录 关键能力进阶 语言知识梳理 1 harm vt. to hurt or injure sb or to damage sth 伤害,损害 He would never harm anyone. n. damage or injury that is caused by a person or an event 伤害,损害 The accident did serious harm to my business. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆同根词 harmful adj. 有害的,导致损害的 Drinking too much is harmful to your health. harmless adj. 无害的;不会导致损伤的 This experiment was harmless to the animals. ◆常用搭配 (1)be harmful to sb / sth 对某人 / 某物有害 (2)do sb / sth harm=do harm to sb / sth 损害 / 伤害某人 / 某物 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 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.According to the study, using cell phones too often does harm 　　　　　_　　your health.  2.Air pollution will get worse and this will be 　　　　　　(harm) to people and animals.  3.Gossip(闲言碎语) may be 　　　　　　　　(harm), but cruel lies can cause pain.  写作升级(同义句转换) 4.Don’t read in bad light; it can harm your eyes. Don’t read in bad light; it can ___________________________your eyes. do harm to / be harmful to harmless harmful to LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 2 argument n. a reason or set of reasons that sb uses to show that sth is true or correct 论点;论据 Her main argument was a moral one. n. a conversation or discussion in which two or more people disagree, often angrily 争论;争吵;争辩;辩论 She had a big argument with her mother. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆同根词 argue v. 争论;争吵;争辩;说理 They’re always arguing with each other about / over money. Jenny argued me into buying a new dress. No one can argue me out of doing this. ◆常用搭配 argue with sb about / over sth 与某人就某事争论 / 争吵 argue sb into / out of doing sth 说服某人做 / 不做某事 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 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.His 　　　　　　　(argue) was that public spending must be reduced.  2.He was arguing 　　　　　　　　his brother 　　　　　　　　how they should spend the money.  单句写作 3.你曾经和家人就看什么电视节目发生过争论吗? Do you ever __________________________________ which TV programme to watch? 4.我们尝试了多种方法去说服他听从我们的建议,但都是白费力气。 We tried many ways to _______________ following our advice, but in vain. argue him into argue with your family about / over about / over with argument LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 3 concentrate vi. to give all your attention to sth and not think about anything else 专注,专心;集中注意力 Adrian was finding it difficult to concentrate. He concentrated mainly on the flying and spoke very little. vt. to bring sth together in one place 使……集中 The industry of this country is mainly concentrated in the south. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆同根词 concentration n. 专心;专注;关注 The game requires great concentration. concentrated adj. 决心要做的;全力以赴的 The company is making a concentrated effort to improve quality. ◆常用搭配 concentrate one’s thought / effort / attention on 集中思想 / 精力 / 注意力于…… concentrate on (doing) sth 全神贯注于(做)某事,专心致志于(做)某事 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入括号内单词的正确形式 1.I knew that 　　　　　　　　(concentrate) was the first requirement for learning.  2.Nothing 　　　　　　　　　(concentrate) the mind better than the knowledge that you could die tomorrow.  3.He made a 　　　　　　　　(concentrate) effort to finish the work on time.  concentrated concentrates concentration LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 单句写作 4.他正在专心写自传。 He ________________________________ writing his autobiography. 5.他最好还是把更多精力放在工作上。 He had better ______________________his work. concentrate more on is concentrating (his attention) on LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 4 addition n. the act of adding sth to sth else 增添;添加 The addition of sugar made this snack much more delicious. ◆同根词 additional adj. 附加的;额外的;外加的 Additional information can be obtained from the centre. ◆拓展提升 (1)in addition除此之外,此外(用于补充信息) The job requires a college degree and, in addition, at least two years of experience. (2)in addition to=besides=apart / aside from除……之外还 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入括号内单词的正确形式 1.In 　　　　　　　　　(add) to reading for knowledge, we read for fun and inspiration.  2.Long running provides 　　　　　　　(add) benefits besides being physically fit.  写作升级(同义句转换) 3.You need money and time. Besides, you need hard work. You need money and time. ______________, you need hard work. In addition additional addition LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 5 basis n. the important facts, ideas or events that support sth and that it can develop from 基础;基点 We made our decision on the basis of the information we had. ◆同根词 base　v. 以……为据点 n. 根据;来源;基础 They should base their economy on the first industry. The relationship between two companies should be based on respect. basic adj. 基本的;基础的 The basic idea is too difficult for us to understand. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆常用搭配 (1)on the basis of 以……为基础;根据…… (2)base… on / upon 使……以……为基础　be based on / upon 以……为基础 / 根据 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 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.You should base your conclusion 　　　　　careful research.  2.By following the 　　　　　　　　　(base) rules of respecting others, you will quickly make some new friends.  3.The 　　　　　　　　　　(base) of a close friendship is trust.  单句写作 4.我们的结论是以这些事实为基础的。 Our conclusions 　　　　　　　　　　　　these facts.  5.这部电影是以同名人气小说为基础(改编)的。 The movie 　　　 　　　　the popular novel of the same name. is based on / upon are based on / upon basis basic on / upon LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 6 focus vi. & vt. to give attention, effort, etc. to one particular subject, situation or person rather than another 集中(注意力、精力等于) She focuses her mind on her work. We should focus on the most urgent problems. n. the thing or person that people are most interested in; the act of paying special attention to sth and making people interested in it 焦点;引起关注 The focus of the research is on environmental problems. The question of compensation(赔偿金) comes into focus. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆同根词 focused adj. 注意力集中的;目标明确的 There’s a need for more focused research. ◆常用搭配 (1)focus on / upon 关注;集中于 focus one’s attention / eyes / energy / mind on… 集中某人的注意力 / 目光 / 精力 / 思想于…… (2)bring… into focus 使……成为关注的焦点 　come into focus 成为焦点 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 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.Most of us are more 　　　　　　(focus) on our tasks in the morning than we are later in the day.  2.Those scientists focus 　　　　　　　the experiment despite others’ disapproval.  3.There’s a new frontier in 3D printing that’s beginning to come 　　　 　_　focus: food. into on / upon focused LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 单句写作 4.他的眼睛注视着黑板。 He _____________________ the blackboard. 5.在法国,咖啡馆是社交生活的中心。 The coffee shop is 　　　　　　　　　　　　 social life in France.  the focus of focused his eyes on LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 7 stay in touch with与……保持联系 stay in touch with相当于keep in touch with。 ◆拓展提升 (1)be in touch with sb 和某人保持联系(强调状态)　get in touch with sb 和某人取得联系(强调动作) (2)be out of touch with sb 和某人失去联系(强调状态)　 lose touch with sb 和某人失去联系(强调动作)　 Let’s stay / keep in touch. She’s in close touch with her high school friends. He tried to get in touch with her but failed. We have been out of touch with each other for many years. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入括号内单词的正确形式 1.We 　　　　　　　　(be) in touch with Tom for 10 years.   2.Here is my number if you need 　　　　　　(get) in touch with me.   写作升级(一句多译) 3.我们失去联系三年了。 (1)It is three years since we ________________each other. (2)We ______________________ with each other for three years. (3)We _______________ each other three years ago. lost touch with have been out of touch lost touch with to get have been LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 8 Firstly, talking online is no replacement for face⁃to⁃face contact…首先,网上聊天并不能取代面对面的接触…… 句中动名词短语talking online作句子的主语。 ◆拓展提升 单个的动名词(短语)作主语时,谓语动词要用单数形式。一般来说,动名词(短语)作主语表示一种抽象的或泛指的动作。 下列句式中it是形式主语,动名词短语是真正的主语: It is no use / good doing sth.做某事是没有用处 / 好处的。 It is a waste of time doing sth.做某事是浪费时间的。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入括号内单词的正确形式 1._________(move) to a new house is a very stressful experience. 2.It’s no use _________(cry) over spilt milk. 3.It’s no good _____________(complain) to your boss about so much work. 4.Listening to loud music at rock concerts _________(have) caused hearing loss in some teenagers. 单句写作 5.___________________(躺在海滩上) makes a person relaxed. 6.______________________(朗读英语) in the morning will do you a lot of good. Reading English aloud Lying on the beach has complaining crying Moving LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 9 It is these skills that enable us to develop lifelong friendships.正是这些技能使我们能够发展终生的友谊。 本句是强调句型。当需要强调句中的主语、宾语、状语时,我们常用“It is / was+被强调部分+that…”句型,It在句中无意义,只起引起被强调部分的作用,被强调部分放在It is / was后面,其他部分置于that之后。强调的主语如果是人, that可以换用who。 It is the bike that Mike wants to buy. It is Mike that / who wants to buy the bike. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 ◆拓展提升 该句型的一般疑问句为:Is / Was it+被强调部分+that / who+其他部分?特殊疑问句为:疑问词+is / was it+that+其他部分? Is it the bike that Mike wants to buy? What is it that Mike wants to buy? LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入1个适当的单词 1.It was in the school hall 　　　　　　　　we saw the new play.  单句写作 2.他是因为表现突出才受到老师专门表扬的吗? 　　　　　　　　　　 of his excellent performance 　　　　　　he was specially praised by his teacher?  3.他到底是为什么在书房里待了那么长时间? 　　　　　　　　　　he stayed in the study for so long?  Why was it that that Was it because that LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 10 You can stay in touch with friends no matter where you are or what you are doing.无论你在哪里,在做什么,你都可以和朋友保持联系。 句中no matter where you are or what you are doing是让步状语从句。 ◆拓展提升 (1)no matter意为“不管,无论”,与what / who / when / where / how等疑问词连用,引导让步状语从句,相当于whatever / whoever / whenever / wherever / however等。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 (2)whatever / whichever / whoever既可以引导让步状语从句,又可以引导名词性从句。引导名词性从句时,不可以替换为“no matter+what / which / who”的形式。 Whatever David says (名词性从句) sounds right to Helen.That’s why she has made up her mind to be with him whatever / no matter what happens (状语从句). 对于海伦来说,无论戴维说什么听起来都是对的。那就是她决心无论发生什么事都要和他在一起的原因。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 在空白处填入1个适当的单词 1.One can always manage to do more things, no matter _________ full one’s schedule is in life. 单句写作 2.I’m convinced that we can overcome any difficulty, _________________(无论什么) it is. 3._____________________________________(不管你是一个多么聪明的谈话者), there are times when it’s better to remain silent. 4.不管在哪里,他的习惯都是要在早餐前散步。 ____________________, he makes it a rule to go for a walk before breakfast. No matter where he is No matter how bright a talker you are no matter what how LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 根据句意和所给的首字母或中文提示,用本课单词的适当形式填空。 1.The sun’s rays can do h　　　　　　　 to our skin.  2.Teachers will never be r　　　　　　　　 by computers in the classroom.  3.Travelling along the old Silk Road is an interesting and r　　　　　　_　　　 experience.  4.Tom is so independent(独立的) that he never asks his parents’ o　　　　_　　　　 unless he wants their support.  5.When my mother saw my creations, she told me how c　　　　　　　_　 my designs were.  1 基础要求达标 reative pinion(s) ewarding eplaced arm LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 6.Remember, even world champion athletes practice their skills on a consistent (持续的) 　　　　　　　　(基础).   7.The company 　　　　　　　　(保持) trade contacts with India since 1980.  8.I don’t want to keep you long, so let me be 　　　　　　　　(简短的).  9.Questions about subject 　　　　　　　　(内容) are generally welcomed.  10.I can’t 　　　　　　　　(集中注意力) with all that noise going on.  concentrate content brief has maintained basis LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 1.Several recent studies examined the role of talent in the sports world. They 　　　　　　　　　　football, basketball and baseball.   2.The experiments were designed 　　　　　　　　our previous results.  3.　　　　　　　　 getting down to a new task as I had expected, he examined the previous work again.   4.This garden has the best collection of native plants. 　　　　　　　　　, it contains numerous trees and flowers from overseas.  5.This study 　　　　　　　　that the economy is slowly growing up.  on the basis of　 in addition　 focus on　 instead of　 point out 用方框中所给短语的适当形式填空。 2 points out In addition Instead of on the basis of focused on LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 根据例句和黑体词,参照中文提示仿写句子。 1.【例句】 While the Internet can bring people closer together, it can also harm friendships. 【仿写】 虽然我理解你说的话,但是我不能同意你的看法。 _______________________________________________________________ 2.【例句】 It is these skills that enable us to develop lifelong friendships. 【仿写】 昨天是李华帮助了我。_______________________________________________________________ 3 It was Li Hua that / who helped me yesterday. While I understand what you say, I can’t agree with you. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 3.【例句】 Thirdly, online relationships may not be what they appear to be. 【仿写】 那就是我想要你做的事。_______________________________________________________________ 4.【例句】 You can stay in touch with friends no matter where you are or what you are doing. 【仿写】 无论你在哪里工作,你总是能找到时间学习。_______________________________________________________________ No matter where you work, you can always find time to study. That is what I want you to do. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 5.【例句】 Whenever someone needs help, friends from all over the world can immediately provide useful suggestions or information. 【仿写】 你什么时候来都受欢迎。_______________________________________________________________ Whenever you come, you are welcomed. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 阅读课文,在空白处填入1个适当的单词或括号内单词的正确形式。 The Internet can help us develop friendships in many aspects. Firstly, the Internet makes it much more convenient for us 1.______________________ (communicate) with each other. Using a smartphone, a tablet or a computer, you can connect anyone wherever you are. Secondly, the Internet 2._________(make) communication more fun. There are many online tools you can use to make yourself a creative person. Thirdly, online communication can actually make the world much 3._________(small). As long as someone needs help, friends from all over the world can 4.______________(immediate) offer help. 4 to communicate immediately smaller has made LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 5._________ Eileen Kennedy⁃Moore, an expert on social communication, says, online friends “fill holes real⁃life friends can’t”. However, 6._________ the other hand, the Internet can also harm friendships. Firstly, talking online cannot take the place of face⁃to⁃face contact. Important social skills 7.____________(form) through direct contact with other people. 8._________________(communicate) through a screen makes it more difficult for children to concentrate or be kind to others. Secondly, the Internet can make people self⁃centred. Some people only care about their online 9._____________(popular) rather than having proper conversations with their friends. Thirdly, online relationships may not be what they seem to be. You can never completely trust 10._________ people you are chatting to. the popularity Communicating are formed on As LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 5 根据以下关键信息进行口头转述。 略 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 关键能力进阶 1 阅读短文,从每题所给的A、B、C、D四个选项中选出最佳选项。 Everyone’s at it, even my neighbours. I thought I might be the only person left in the world who hadn’t done an eBay deal. So, I decided to try my hand at online auction(网上拍卖). Buying for beginners Sign up on the website. Most items (e.g. tables, computers and books) ready for auction will come with a picture and a short description; others may be marked with “Buy It Now” and have a fixed price. You can buy these right away. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 If the item is being auctioned, you offer the highest price you are prepared to pay and eBay bids(出价) for you. The bid will be increased little by little until it goes beyond your highest bid, and then you are emailed and asked if you would like to bid again. Auctions last up to 10 days and when they finish, you get an email telling you whether you have won the item. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 How to pay Sellers decide how they would like to be paid and you need to check this before placing a bid as you might not want to post a check or postal order(邮政汇票). The easiest way is through PayPal, an online payment system that takes the money away from your credit card. Being simple If you plan to sell on eBay, it helps to include a picture of the item. I followed my friend’s advice and put up the items I wanted to sell for a 10⁃day auction, starting on a Thursday. This way buyers had two weekends to bid. LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 The big things in life It’s easy to post a small item, but furniture is a big part of eBay and this has to be collectively sent by delivery men. Check the ways of delivery before you bid. 语篇导读:文章介绍了网上拍卖系统的相关信息。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 1.What should you do if the item is being auctioned?(　　) A.Make loud noises. B.Get others not to bid. C.Ask other people’s price. D.Offer the highest price you are ready to pay. D 细节理解题。根据第三段中的“If the item is being auctioned, you offer the highest price you are prepared to pay and eBay bids(出价) for you.”可知,如果物品正在拍卖,买方应该提供愿意支付的最高价格。故选D项。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 2.After bidding for an item, a buyer 　　　　. (　　) A.has chances to make higher bids B.will get what he or she wants in ten days C.should make a payment immediately D.may check its picture and description A 细节理解题。根据第三段第二句可知,竞价一点点增加到超过你的最高价时,你会收到邮件询问你是否想要继续竞价,因此买方有机会来提高竞价。故选A项。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 3.What is the easiest way of making a payment mentioned according to the passage? (　　) A.Through a local banking system. B.By sending money to the seller. C.Through an online payment system. D.By paying the delivery man directly. C 细节理解题。根据倒数第三段最后一句可知,最便捷的方式是通过网上支付系统付款。故选C项。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 4.What is the passage mainly about? (　　) A.How to make a payment online. B.Ways of making delivery online. C.How to use an online auction system. D.Advantages of an online auction system. C 主旨大意题。本文主要介绍了网上拍卖系统的相关信息,包括买家如何竞价、如何支付等。故选C项。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。 Over time I have changed quite a lot. I began as a 1.　　　 　 (calculate) machine in France in 1642. When I was young I could 2.　　　　 (simple) difficult sums. I developed very slowly and 3.　　　　 took nearly two hundred years before I was built as an analytical machine by Charles Babbage. After I was programmed by an operator 4.　　 　　 used cards with holes, I could “think” 5.　　　　 (logic) and produce an answer quicker than any person. At that time it was considered a technological revolution and the start of my “artificial intelligence”. 2 calculating logically who / that it simplify LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 In 1936 my real father, Alan Turing, 6.　　　　 (write) a book about whether I could be made 7.　　　　 (work) as a “universal machine” to solve any difficult mathematical problem. From then 8.　　　　, I grew rapidly both in size and in brainpower. By the 1940s I had grown as large as a room, and I wondered if I would grow any larger. However, this reality also worried my designers. As time went by, I was made 9.　　　　(small). First as a PC, and then as a laptop, I 10.　　 　　 (use) in offices and homes since the 1970s.  have been used smaller on to work wrote LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 1.考查形容词。修饰名词machine应用形容词,此处应用动词⁃ing形式的形容词表示被修饰物的用途,故填calculating。 2.考查时态、语态和主谓一致。could后接动词原形,故填 simplify。 3.考查代词。“It takes / took+时间段+before+其他成分.”是固定句型,表示“花费了多长时间以后才……”,it为形式主语,故填it。 4.考查定语从句。此处引导一个限制性定语从句,先行词是an operator,且从句缺少主语,因此要用who或者that来引导。 5.考查副词。此处应用副词修饰动词think,故填logically。 6.考查时态、语态和主谓一致。根据时间状语In 1936可知,此处描述的是过去发生的事情,应用一般过去时,故填wrote。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 7.考查非谓语动词。此处是短语make sb do sth的被动语态,在被动语态中,不定式符号to需加上,故填to work。 8.考查介词。from then on“从那时起”,是固定短语,故填on。 9.考查形容词。随着时间的推移,电脑越来越小,所以此处用形容词的比较级作主语补足语,故填smaller。 10.考查时态、语态和主谓一致。根据时间状语since the 1970s可知,此处表示过去的某一动作一直持续到现在,应用现在完成时,且主语I与use是逻辑上的动宾关系,故填have been used。 LESSON 3　INTERNET AND FRIENDSHIPS -- 返回目录 谢谢观看! $