Unit 4 Section Ⅰ Topic talk & Lesson1（课件PPT）-【金榜题名】2025-2026学年高一英语必修第二册高中同步学案（北师大版）

Unit 4 返回导航 * Unit 4 　Information Technology Section Ⅰ　Topic talk & Lesson 1 Unit 4 返回导航 * 现在，中国有1.6亿多网民，其中66%是青少年。你知道人们上网做什么吗？你能够想象得到没有网络的世界会是什么样子吗？ Can you imagine a world without the Internet？It's surprising to think about it. Unit 4 返回导航 * Now，China has more than 162 million Internet users，according to the China Internet Network Information Centre.This is the second largest number of users in the world after the United States.Today，66% of Chinese “netizens” are teenagers.“They spend about thirteen hours every week online，” said Qian Hulin，an Internet expert.Doctor Song in Beijing Xuanwu Hospital said about 14% of Chinese netizens who are teens often lasted over ten hours to play online games. The main reasons why teenagers surf the Net are to search for information，to communicate with others and to have fun.On the Internet，teenagers can find out almost anything.And surfing the Net Unit 4 返回导航 * can help students with their homework and widen their knowledge. Li Dong，a teacher at No.41 Middle School in Shijiazhuang，likes her students to use the Internet.“When we talk in class，students who surf the Net usually know more background information than the others，” she said. In addition，people can use the Internet to write letters or stories，send emails and chat.Many teens keep in touch with their friends online.It is cheaper than phoning somebody far away and also much quicker. Unit 4 返回导航 * 根据短文内容回答问题： 1．Which country has the largest number of users in the world? 2．Why do teenagers surf the Net? 答案：　1.The United States.　2.They want to search for information，to communicate with others and to have fun. Unit 4 返回导航 * 目录 contents Part 01 基础梳理 新知落实 Part 02 语篇解读 要点领悟 Part 05 课时作业(一) Part 03 知识整合 核心突破 Part 04 综合训练 能力提升 Unit 4 返回导航 * 基础梳理 新知落实 返回导航 Unit 4 返回导航 * enable effect impact super fancy trick identity Ⅰ.重点单词 基础单词 1． vt.使可能，使发生 2． n．效应；影响 3． n．影响；作用 4． adj.极好的，了不起的 5． adj.花哨的；别致的 6． vt.欺骗，诱骗，哄骗 7． n．身份；特征 Unit 4 返回导航 * sensible experiment nowadays view concern virtual cheat creativity 8． adj.朴素实用的；明智的；合理的 9． vi.& vt.做实验；进行实验 n．实验 10． adv.现今，现时 11． n．创造力；创造性 12． n．担忧，忧虑 vt.与……有关；使担心 13． adj.虚拟的；模拟的 14． vt.欺骗；欺诈 15． vt.看；把……视为 Unit 4 返回导航 * explorer exploration convenient addiction addictive addict recommend personal personally 拓展词汇 16．explore vt.探究；探讨；探险→ n．探险家；勘探者→ n．探索 17．convenience n．方便，便利→ adj.方便的 18．addicted adj.对……着迷的；沉迷的→ n．沉溺；嗜好→ adj.使人上瘾的→ vt.使上瘾 n．有瘾的人 19．recommendation n．建议，提议；推荐→ vt.推荐；建议 20．personality n．个性，性格→ adj.个人的→ adv.亲自地；就自己而言 Unit 4 返回导航 * admission various vary instantly obvious select 21．admit vt.承认→ n．准入；入场费；承认 22．variety n．多样化，变化→ adj.不同的；各种各样的→ vt.&vi.使多样化；变化 23．instant adj.立刻的，马上的→ adv.马上 24．obviously adv.显而易见的，明显的→ adj.显然的，显而易见的 25．selection n．选择；供选择的同类事物→ vt.挑选；选择 Unit 4 返回导航 * a wide variety of forms be addicted to look more or less like them have the power to create new identities make a few improvements express yourself Ⅱ.重点短语 1． 　　　　多种形式 2． 沉迷 3． 　　　　　看起来或多或少像他们 4． 　做一些改进 5． 　表达你自己 6． 　　　　　　　有能力创造新的身份 Unit 4 返回导航 * at the same time in a more positive light 7． 同时 8． 　　　　　　从更积极的角度来看 Unit 4 返回导航 * what it used to be Ⅲ.重点句型 1．They also experiment with things like different hairstyles—which says a lot，perhaps，about what they want to look like. 他们也会尝试像不同的发型这样的事情，这很可能会体现他们理想中的样子。 [分析]　这是what引导的名词性从句，作介词about的宾语。 [仿写]　我们的家乡变化很大，它现在与数年前的样子完全不同。 Our hometown has changed a lot，and now it is quite different from a few years ago. Unit 4 返回导航 * so excited that 2．Some users worry that they are spending so much time in virtual worlds that they are becoming afraid of meeting people in the real world. 一些网民开始担心自己在虚拟世界沉溺太久，以至于开始害怕在现实中与人交往。 [分析]　这是so...that句型，that引导结果状语。 [仿写]　当球迷们看到贝克汉姆的时候，他们如此激动以至于大喊大叫。 When the football fans saw Beckham，they got they cried out. Unit 4 返回导航 * 语篇解读 ·要点领悟 返回导航 Unit 4 返回导航 * Ⅰ.Read the text and match the main idea with each paragraph. Part 1 (Para.1)　　A．The views on the use of avatars. Part 2 (Para.2) B．Avatars are everywhere nowadays. Part 3 (Paras.3－4) C．The history of avatars. Part 4 (Para.5) D．The definition of avatars. Part 5 (Para.6) E．The purposes of avatars. 答案：　Part 1－D　Part 2－C　Part 3－E Part 4－B　Part 5－A Unit 4 返回导航 * Ⅱ.Read the text carefully and choose the best answers. 1．When were avatars being used in web chats like instant messenger? A．In the 1980s.　B．By the late 1990s. C．Nowadays. D．In the 1970s. 2．What does a picture of a cute cat mean? A．“I like relaxing and having fun.” B．“I'm a really funny person.” C．“I'm tall，young and nicelooking.” D．“I like being creative.” Unit 4 返回导航 * 3．Who could see your avatars? A．Only your friends. B．Many people. C．No one. D．Only your family. 4．What people can use avatars do? A．Act just like a real person. B．Travel around bigger，more exciting virtual worlds. C.Help others online. D．Cheat others online. Unit 4 返回导航 * 5．What is the purpose of the text? A．To introduce some information about avatars. B．To express yourself using pictures. C．To introduce the history of avatars. D．To introduce definition of avatars. 答案：　1.B　2.A　3.B　4.D　5.A Unit 4 返回导航 * identities appeared selection personality yourself creativity concerns Ⅲ.Complete the passage according to the text. Avatars are digital 1. (identity)，which you use to represent yourself online.The first simple 2D avatars 2. (appear) in roleplaying computer games in the 1980s.Nowadays avatars have a wide variety of forms and users.People can choose an avatar from a 3. (select) of readymade images，or create their own images.The avatar you choose says a lot about your 4. (personal). Avatars let you express 5. (you) and give you lots of room for 6. (create). But the use of avatars has also caused a few 7. (concern). Unit 4 返回导航 * that others when Some users worry that they are spending so much time in virtual worlds 8. they are becoming afraid of meeting people in the real world.The use of several avatars can also be a source of risk，as people can use avatars to cheat 9. (other) online.However，many people see avatars in a more positive light.They look forward to a time 10. their avatar will act like a real person. Unit 4 返回导航 * 知识整合·核心突破 返回导航 Unit 4 返回导航 * 1．convenience n．方便，便利；便利的事物 at one's convenience 在某人方便的时候 for one's convenience (of)＝for the convenience of sb. 为了某人的方便 It is convenient for sb. to do sth.某人方便做某事 for convenience 为了方便起见 convenience food/store 方便食品/便利店 inconvenience n．不方便；不便 inconvenient adj.不方便的 Unit 4 返回导航 * To enjoy the convenience of digital payment，many senior citizens started to use smart phones. 为了享受数字支付的便利， 许多老年市民开始使用智能手机。 Mobile payment platforms have brought about added convenience for consumers. 移动支付平台给消费者带来了更多的便利。 It is convenient for us to read on the Internet and mobile phone. 通过网络和手机阅读对我们来说很方便。 Unit 4 返回导航 * [名师点津] convenient作表语时，不可用人作主语，要用物作主语或用it充当形式主语。表达“如果你方便的话”和“在你方便的时候”时，要分别用if it is convenient for you和when it is convenient for you。 Unit 4 返回导航 * For at convenient [即学活用] 单句语法填空 ①Can you telephone me your convenience to arrange a meeting? ② the sake of convenience we choose online payments. ③We hope you will accept our invitation if/when it is (convenience) for you. Unit 4 返回导航 * 2．effect n．效应；影响；结果 come into effect 生效，开始实施 take effect 生效，开始起作用 in effect 实际上，事实上 have a/an ...effect on/upon... 对……有……影响 side effect 副作用 cause and effect 因果 Unit 4 返回导航 * The overall effects of the publicity have been more beneficial than harmful. 宣传的总体效果是利大于弊的。 It's reported that this contract will come into effect next month. 据报道， 这份合同下个月开始生效。 This is the most effective and convenient way to solve the traffic jam. 这是解决交通堵塞最有效， 也最方便的办法。 Unit 4 返回导航 * The decision was taken yesterday and will remain in effect until further government instructions.　 该决定于昨天做出， 在政府未有进一步指示前将一直有效。 His proposal is practicable in theory but can't be put into effect. 他的建议在理论上是可行的， 但不能付诸实施。 The new traffic rule came into effect.Now，it is beginning to take effect.In effect，it has an effect on people's life in many ways besides people's focus on the road safety. 新的交通法规开始实施了。现在它开始生效了。实际上，除了人们对道路安全的关注外，它还在很多方面影响着人们的生活。 Unit 4 返回导航 * on effective effectively [即学活用] 单句语法填空 ①Best of all, humor raises your energy, and that can have an effect everything you do at school. ②The new speed limit on this road becomes (effect) in June. ③Ordinary soap，used correctly，can deal with bacteria (effective). Unit 4 返回导航 * 3．addicted adj.对……着迷的；沉迷的 (1)get/be/become addicted to　对…… 有瘾；热衷于…… (2)addiction n. 入迷；上瘾 (3)addictive adj. 使人上瘾的 (4)addict n. 上瘾的人 She says she's unable to give up listening to Beijing Opera; she's completely addicted. 她说她无法戒掉听京剧， 她已经完全上瘾了。 Unit 4 返回导航 * I don't want the kids to get addicted to stupid computer games. 我不想让孩子们沉迷于讨厌的电脑游戏。 I want to apply for the job of volunteering in the Music Festival because I'm addicted to music.　 我想申请音乐节志愿者的工作， 因为我对音乐非常着迷。 She helped him fight his addiction to alcohol. 她帮助他戒酒。 Unit 4 返回导航 * addictive addiction [即学活用] 单句语法填空 ①The problem is that sugar is highly (addict)，as study has shown. ②If you have good time management，the (addict) can be reduced. Unit 4 返回导航 * 4．admit vt.& vi.承认；容许；接纳；容纳 　admit doing/having done/that... 　　　　　　　　承认…… be admitted to/into 被接纳进入 admit...as...接纳……作为…… I admit I was too scared at that moment... 我承认我当时太害怕了…… He had to admit having made a serious mistake in public. 他不得不当众承认犯了一个严重的错误。 Unit 4 返回导航 * The concerned mother became excited to hear the news of her son's having been admitted to the university. 担忧的母亲听到她儿子被大学录取的消息十分激动。 Our football team decided to admit him as one of the members. 我们的足球队决定吸收他为本队队员。 Unit 4 返回导航 * admits having stolen into/to [即学活用] 单句语法填空 ①Designer Jennifer Anderson (admit) it took her a while to come around to the opinion that using nutria fur for her creations is morally acceptable. ②Little Jack admitted (steal) in the shop，promising that he wouldn't do that in future. ③He studies very hard in order to get himself admitted a key university. Unit 4 返回导航 * having driven that he had driven 一句多译 ④他承认无证驾驶。 A.He admitted without a driving license. B.He admitted without a driving license. Unit 4 返回导航 * 5．trick vt.欺骗，诱骗，哄骗 n．骗局，把戏，玩笑，诀窍 play a trick/tricks on sb. 欺骗/捉弄/戏弄某人 trick sb. into doing sth. 骗某人做某事 trick sb. out of sth. 从某人处骗走某物 Unit 4 返回导航 * You can't teach an old dog new tricks. 老狗学不会新把戏。 The boys hid John's bike to play a trick on him. 男孩子们把约翰的自行车藏起来捉弄他。 He tricked me into lending him $100. 他骗我借给了他100美元。 He tricked the girl out of all her money. 他骗了那个女孩所有的钱。 Unit 4 返回导航 * on into out [即学活用] 单句语法填空 ①By tradition，in some countries，people can play tricks each other before noon on April 1，but they'll be foolish if they do it in the afternoon. ②Today，a fall guy is a person who is tricked taking the blame for the crime or wrongdoing of someone else. ③The old woman was tricked of her golden earrings. Unit 4 返回导航 * 6．instant adj.即时的，立刻的，马上的 n．瞬间；片刻 in an instant 片刻，瞬间 for an instant 一瞬间 the instant (that) 一……就…… at that instant 在那瞬间 Unit 4 返回导航 * The telegram asked for an instant reply. 这封电报要求立即回复。 I shall be back in an instant.我马上就回来。 I couldn't answer for an instant. 我一时答不上来。 As soon as/The instant (that) I saw him，I knew he was the man the police were looking for. 我一看见他就认出他正是警方在寻找的那个人。 Unit 4 返回导航 * instantly the an [即学活用] 单句语法填空 ①She recognized me (instant) she caught a glimpse of me. ②You see the lightning instant it happens，but you hear the thunder later. ③In instant，he took off his coat and jumped into the water. Unit 4 返回导航 * 7．concern n．担忧，忧虑vt.与……有关；使担心 show concern for 对……表示关心 be concerned about/for 关心/挂念…… be concerned with/in 与……有关/有牵连 as/so far as...be concerned 就……而言 Unit 4 返回导航 * She showed great concern for her son's illness.她非常担心儿子的病情。 She is concerned about how little food I eat. 她见我吃得那么少，很是担忧。 It would be better if the topics are concerned with challenges and dreams. 如果话题与挑战和梦想有关，那就更好了。 Everyone who was directly concerned in the incident has now resigned. 与该事件有直接牵连的人现在均已辞职。 Unit 4 返回导航 * As far as I am concerned，I prefer to work in a team，which offers me a chance to learn how to get along with others. 就我而言，我更愿意在团队中工作，这为我提供了如何与他人相处的学习机会。 The mayor was very concerned about the workers' safety.He showed much concern for those who worked underground and asked them some questions concerning safety.市长很关心工人的安全。他对那些在地下工作的人非常关心，并且向他们询问了一些关于安全的问题。 Unit 4 返回导航 * [名师点津] concerned充当前置定语时，意为“关心的，挂念的”；如果表示“有关的”，作定语要后置。如：a concerned father一位担心的父亲；all the people concerned所有相关的人员。 Unit 4 返回导航 * concerned concerned concern concerned concerning [即学活用] 用concern的适当形式填空 ①Scientists in Louisiana were so that they decided to pay hunters $5 a tail. ②As far as I am ，parents show too much about the future of their children.In other words，they are too about their children's future. ③Many teenagers are interested in the novels the Second World War. Unit 4 返回导航 * is concerned with was concerned in As far as I am concerned 完成句子 ④As is known to all，her latest documentary (与……有关)unemployment. ⑤I once believed that he (和……有牵连) all those matters you mentioned. ⑥ (就我而言)，reading English newspapers is of great use. Unit 4 返回导航 * 8．cheat vt.欺骗；欺诈 n．骗子 cheat sb. into doing sth. 骗某人(做)某事 cheat sb. out of sth. 骗取某人某物 cheat in an exam 在考试中作弊 Unit 4 返回导航 * She meant to have cheated her aged aunt out of her fortune. 她本打算从年迈的姨妈那里骗取财产。 This politician tried to cheat the people into the belief that he would work for public welfare. 这个政客试图哄骗人们相信他会为大众谋福利。 He is nothing but a cheat. 他只不过是个骗子。 The salesman cheated her into buying a fake. 那个推销员骗她买了件赝品。 Unit 4 返回导航 * tried to cheat the students into joining cheating in the exam cheated the old lady out of her necklace [即学活用] 完成句子 ①The handsome man (试图诱骗学生加入) the illegal organization. ②Tom was caught (考试作弊) and was punished by the teacher. ③Two young men (骗取了老妇人的项链) and then got away. Unit 4 返回导航 * 9．a variety of各种各样的 　　 eq \b\lc\ \rc\}(\a\vs4\al\co1(a variety of,varieties of)) ＝various 种类繁多的…… vary with sth.随……而变化 vary from...to...从……到……不同；在……到……之间变动 Unit 4 返回导航 * There are different kinds of fruit trees as well as a variety of animals. 有不同种类的果树还有各种动物。 Varieties of flowers are sold in the market. 市场上出售各种花卉。 Opinions on this matter vary from person to person.对于这件事，人人意见不一。 Unit 4 返回导航 * with of various [即学活用] 单句语法填空 ①Whether it is in the past，at present，or in the future，time would not vary the development of the world. ②Many parents want to give their children chances to experience a variety situations. ③The researchers examined (vary) levels of noise on participants. Unit 4 返回导航 * of varieties 一句多译 ④我家有各种各样的书。 A．I have a variety books in my home. B．I have of books in my home. Unit 4 返回导航 * 10．instead of代替，作为……的替换 　　(1)instead of表示“代替，作为……的替换”，为介词短语，其后常接名词、代词或v.ing作宾语。 (2)instead副词，意为“代替，顶替”，单独使用。 Instead of going (go)to Qingdao，I'm going to Dalian this year.今年我将去大连，而不去青岛。 Mr. Wang is ill.I will take his class instead. 王老师病了，我将替他上课。 Unit 4 返回导航 * Instead instead of instead of [即学活用] 选词填空：instead/instead of ①Jack didn't study law. ，he decided to become an actor. ②I want to fly to Beijing taking a train. 同义句转换 ③He didn't answer me；instead，he asked me another question. →He asked me another question answering me. Unit 4 返回导航 * 11．look forward to期望，盼望(to为介词) look into 往……里看；调查 look out 向外看；当心；小心 look up to 仰视；尊敬；赞赏 look down on/upon 俯视；轻视；看不起 look through 浏览；仔细查看 Unit 4 返回导航 * We're really looking forward to seeing you again. 我们真的盼望着能再见到你。 Her parents tell her not to look down upon/on countrymen. 她父母叫她不要瞧不起乡下人。 Look through this proposal for me，and tell me what you think of it. 替我好好看一下这个提案，并把你的想法告诉我。 Unit 4 返回导航 * practicing through to [即学活用] 单句语法填空 ①He was already looking forward to (practise) the new music. ②He usually looks newspapers on the sofa in the morning. ③All his students look up him because of his unique personalities. Unit 4 返回导航 * what they want to look like 1．(教材P9)They also experiment with things like different hairstyles－which says a lot，perhaps，about ． 他们也会尝试像不同的发型这样的事情，这很可能会体现他们理想中的样子。 　 Unit 4 返回导航 * 　[句式分析]　 句中“what they want to look like”为what引导的宾语从句，what在从句中作宾语。 what引导宾语从句时，在从句中可以作主语、宾语、表语和定语。 They don't know what happened. 他们不知道发生了什么。(what在从句中作主语) You can't imagine what he was ten years ago. 你无法想象他10年前是个什么样的人。(what在从句中作表语) I don't know what books he likes reading. 我不知道他喜欢读什么书。(what在从句中作定语) Unit 4 返回导航 * what What what [即学活用] 单句语法填空 ①I don't know I should buy for Father's Day. ② is so breathtaking about the experience is the outofthisworld scenes. ③I think impresses me about his painting is the colours he uses. Unit 4 返回导航 * so much time that 2．(教材P9)Some users worry that they are spending in virtual worlds they are becoming afraid of meeting people in the real world. 一些网民开始担心自己在虚拟世界沉溺太久，以至于开始害怕在现实中与人交往。 Unit 4 返回导航 * [句式分析]　 句中“so much time...that...”为“so...that...”结构。 (1)so...that引导结果状语从句，意为“如此……以至于”。其常见形式为： so＋adj./adv.＋that... so＋adj.＋a/an＋n.(单数可数名词)＋that... so＋many/few＋n.(可数名词复数)＋that... so＋much/little(少)＋n.(不可数名词)＋that... Unit 4 返回导航 * (2)such...that...意为“如此……以至于……”，such后接名词，常见形式为： such＋a(n)＋形容词＋可数名词单数＋that... such＋形容词＋不可数名词＋that... such＋形容词＋可数名词复数＋that... Unit 4 返回导航 * He was so foolish that he accepted her invitation. 他接受她的邀请真是太傻了。 It is so good a camping spot that I'd like to go there again. 这个露营地点如此好，以至于我想再去一次。 There were so few guests that the host felt sad. 宾客如此之少，主人感到伤心。 It is such a heavy box that I can't lift it. 这个箱子如此重以至于我提不起来。 They are such lovely children that we all love them. 这些孩子非常可爱，我们都喜欢他们。 Unit 4 返回导航 * [名师点津] 当so＋形容词/副词及such...放在句首时，主句要用部分倒装。 Unit 4 返回导航 * so that such that such that such so such [即学活用] 选词填空：so/such/that ①Everyone was friendly and likeminded it was very easy to feel at home. ②It was a hot day nobody wanted to go out. ③I have made rapid progress in English my parents are proud of me. ④You can't imagine little birds can eat many insects in a short time. Unit 4 返回导航 * So fast is the city developing 完成句子 ⑤ that you can never imagine what it will be like tomorrow. 现在城市发展如此之快，你永远想象不到它明天会是什么样子。 Unit 4 返回导航 * 综合训练 能力提升 返回导航 Unit 4 返回导航 * to personality about will select Ⅰ.单句语法填空 1．Some students are addicted playing computer games and some often cheat in the exams. 2．The purpose of education is to develop a fine (person) in children. 3．Nowadays people are more concerned the environment where they live. 4．It's reported that the coach (selection) twelve basketball players to take part in the sports meeting. Unit 4 返回导航 * affected obvious creative various instantly virtually 5．It was just her childhood experiences that (effect) her character and later life. 6．It is (obviously) that she is the very person for the job. 7．The writing of poems，stories or plays is often called (creativity) writing. 8．There are (variety) ways of solving the problem. 9．He recognized her (instant)，even though he had never seen her. 10．It is (virtual) impossible to predict the future accurately. Unit 4 返回导航 * looking forward to hearing from you The instant the music starts As far as women are concerned Ⅱ.完成句子 1．Meanwhile，I am as soon as possible. 同时，我期待着尽快收到你的回信。 2． ，I recognize it's a song of Jay Chou. 音乐一响起，我就知道这是周杰伦的一首歌。 3． ，they are more interested in how the other women dress than other things.就女人而言，她们对别的女人的衣着打扮比对其他事情更感兴趣。 Unit 4 返回导航 * In my view/opinion instead of going is used to playing tricks on 4． ，Guangzhou Evergrande's winning the 2013 Asian Champions League title is a big step for Chinese football. 我认为，广州恒大赢得2013年亚冠联赛冠军对于中国足球来说是一大步。 5．Now I can walk to work by car. 现在我可以步行去上班，而不必开车了。 6．The naughty boy others. 那个淘气的男孩习惯对别人搞恶作剧。 Unit 4 返回导航 * so many cars in the street that What books you are going to buy 7．There were I couldn't get through. 路上的车很多以至于我过不去。 8． is not important.你将要买什么书不重要。 Unit 4 返回导航 * 课时作业（一） 点击进入 word Unit 4 返回导航 * 谢谢观看 $$