UNIT 2 Section Ⅰ Starting out & Understanding ideas（Word教参）-【精讲精练】2025-2026学年高中英语选择性必修第二册（外研版）

本讲义围绕“社交媒体脱瘾”主题，系统整合核心词汇（如switch, occupy, access）、重点语法结构（with复合结构、if从句省略、leave+宾语+宾补等）、阅读理解策略及写作中的心理活动描写，构建从文本理解到语言运用的学习支架，帮助学生循序渐进掌握语言知识与技能。 该资料以真实对话情境激活语言能力，通过不同学生的脱瘾体验分析培养思维品质（如反思社交媒体依赖），词汇拓展与语法解析提升学习能力。课中对话文本助力互动教学，课后词汇练习和语法解析可查漏补缺，写作指导中的心理描写训练促进语言表达与思维深度结合。

[对应学生用书P26] Section Ⅰ　Starting out & Understanding ideas [对应学生用书P26] SOCIAL MEDIA DETOX① Moderator② Today marks the last day of the Social Media Detox，Brenton High's fundraising③ campaign for new sports equipment.At the start of the detox，over 100 students had been persuaded to stop④ using social media，in ANY form，for seven days.This meant no messaging⑤ friends，no posting photos，no blogging—nothing.They had been promised money by family and friends for each day [1]spent without using social media．They were excited.They were nervous.But could they do it? [1]此处是过去分词短语作后置定语，修饰each day。 [2]With the detox now finished，they've switched on⑥ their devices and they're back online.I bet⑦ you're as eager as I am to find out just how many have been motivated⑧ enough to last the full seven days! And what，[3]if anything，has been learnt from the experience? [2]此处是with复合结构在句中作状语。 [3]此处是if从句的省略结构。 Anna 17 I lasted⑨ two days.[4]The detox was more difficult to tolerate⑩than I had expected. [5]I felt like I had lost an arm! Not eating for two days would have been easier! But on reflection⑪，I can see how much of my time had been occupied⑫ with checking my phone.I'm now trying to spend less time online and more time picking up my hobbies. [4]本句是主从复合句，than引导比较状语从句。主句是“主语＋be＋adj.(＋for sb)＋to do”句型，tolerate与主语The detox之间是动宾关系。 [5]此处使用了虚拟语气，表示对过去情况的虚拟。 Devon 16 I lasted four days.On Monday，my classmate and I spoke about what we did at the weekend—it felt really strange not to already know what he had done.[6]We would usually have posted pictures and updated our profiles⑬. Doing the detox meant we had to talk and explain what we were doing and thinking! It made me realise the value of real contact that I had forgotten. [6]本句使用了虚拟语气，且表示与过去事实相反的情况。此处可以理解为省略了从句“if we hadn't taken part in the campaign”。 Cindy 18 I managed⑭ the whole week! At first，I really felt I was missing out⑮.Then，instead of messaging my friend，I went round to⑯ her house.Without our phones，we had a proper⑰ conversation for over two hours，without being distracted⑱ by messages from other people.It felt so good！Then I decided to visit a different friend every day.By the fifth day，I wondered—was I really missing out by not constantly⑲ checking my phone to see what everyone else was up to⑳？ George 16 I did㉑ all seven days，too! [7]To be honest㉒，I didn't find the detox too difficult，but I did give my phone to my dad to avoid giving in！My brother thought I should make full use of the time without my phone，so he took me to check out㉓ our local sports centre.An hour's sport each day [8]left me tired out and wanting to go to bed early．The detox made me healthier! [7]本句是由but连接的并列句。第一个分句中使用了“find＋宾语＋宾补”结构，不定式短语To be honest是独立成分；第二个分句中，助动词did用于强调谓语动词，不定式短语to avoid giving in作目的状语。 [8]此处是“leave＋宾语＋宾补”结构，形容词短语tired out和现在分词短语wanting to go to bed early并列作宾补。 Max 17 I'm embarrassed to say㉔ that I threw in the towel㉕on the first day! I knew there was a party [9]happening that evening ，but without access㉖ to social media I couldn't remember where it was！In the end，I turned on my phone to check，but couldn't resist having㉗ a quick look at㉘ my social media accounts㉙.What's worse㉚，I then spent so much time catching up on㉛ news，I almost missed the party! [9]此处是v.-ing短语作后置定语，party与happen之间是主谓关系。 Moderator The detox raised a total of￡ 1，632.82 for new school sports equipment! Well done，everyone who took part! After reading the posts on this forum，[10]it seems that something other than㉜ money has also been raised through the detox．Awareness㉝of just how much we rely on㉞ social media can help us step away from㉟ it and communicate with each other better. [10]“it seems that...”意为“看起来……，似乎/好像……”，that引导表语从句。 ①detox n.[U]脱瘾 ②moderator n.主持人 moderate vt.& vi.主持(讨论、辩论等) ③fundraising n.[U]募捐，筹款 fundraiser n.筹集资金者，募捐活动 ④persuade sb to do sth说服某人做某事 ⑤mean doing sth意味着做某事 mean to do sth打算做某事 ⑥switch on (用开关)开，打开(电灯、机器等) switch v.(用开关)改变，转换 switch off (用开关)关，关闭(电灯、机器等) ⑦I bet意为“我敢肯定、我敢保证”，表示说话者对某事很有把握或信心。 ⑧motivate v.激发，激励 motivate sb to do sth激励某人做某事 motivation n.[C，U]动机，动力 ⑨last vt.& vi.[熟词生义](在困境等中)坚持下去，熬过(困境等) ⑩tolerate vt.忍受，容忍 [同义词]put up with忍受，容忍 ⑪on reflection经再三考虑 ⑫occupy v.占用，占去(时间) be occupied with...被……占据；忙于；专心于 ⑬update one's profiles更新某人的概况 profile n.概况，简介 a job/employee profile一份工作/雇员简介 ⑭manage v.完成(困难的事)，勉力完成 manage to do sth设法做成某事 ⑮miss out错失取乐(或获利等)的机会 ⑯go round to访问，参观(附近某处)；拜访(某人) ⑰proper adj.[熟词生义]真正的，像样的，名副其实的 ⑱distract v.分散(注意力)，使分心 be distracted by...因……分心，被……分散注意力 ⑲constantly adv.持续不断地；经常地 ⑳be up to正在干，从事着 ㉑did在此替代前文中出现的managed。 ㉒to be honest老实说，说实在的 ㉓check out查看，观察(有趣或有吸引力的人或事物) ㉔be embarrassed to do sth因做某事而感到尴尬(不定式作原因状语) ㉕throw in the towel认输 towel n.毛巾 a hand/bath towel一块手巾/浴巾 ㉖access n.接触的机会(常与介词to连用) without access to没有使用/见到……的机会 ㉗resist doing sth抵制做某事的诱惑 can't resist doing sth(＝can't help doing sth)忍不住做某事 ㉘have a quick look at快速浏览 ㉙social media accounts社交媒体账户 ㉚what's worse更为糟糕的是 [同义词]to make matters worse＝worse still更糟糕的是 ㉛catch up on了解(已发生的事) ㉜other than除……以外 ㉝awareness n.意识，认识 ㉞rely on依靠，依赖 rely v.(为生活或生存而)依赖 ㉟step away from逃避；远离；摆脱 戒除社交媒体 主持人 今天是脱瘾社交媒体的最后一天。脱瘾社交媒体是布伦顿高中为购买新的运动器材而发起的募捐活动。脱瘾活动开始时，学校成功说服了100多名学生连续七天不使用任何形式的社交媒体。这意味着不给朋友发消息，不上传照片，不发博客——什么都不做。家人和朋友承诺，不用社交媒体的每一天他们都可以得到金钱(奖励)。他们既兴奋又紧张。可他们能做到吗？ 脱瘾社交媒体活动现在结束了，他们已经打开了他们的电子设备，重新上线了。我敢肯定你们跟我一样急于知道这个活动激励了多少人坚持了整整七天！并且如果有的话，他们能从这次经历中学到什么呢？ 安娜 17岁 我坚持了两天。脱瘾社交网络比我预期的更加难以忍受。我感觉自己就像失去了一只手臂！两天不吃东西可能会更容易一些！不过，仔细想来，我可以知道查看手机到底占据了我多少时间。我现在正努力少花些时间上网，多花些时间来培养一些爱好。 德文 16岁 我坚持了四天。周一，我和我的同学聊了聊我们周末都做了什么——未能事先知道他到底做了什么还真是不习惯。我们通常都会发布照片，并更新我们的概况。脱瘾社交网络意味着我们必须当面交谈，解释自己的所做所想！这让我意识到了自己早已忘记的真正的交流的价值。 辛迪 18岁 我坚持了整整一周！最初，我真的感觉错过了无数机会。后来，我去了朋友家，而不是给她发信息。没有了手机，我们畅谈了两个多小时，且没有因为其他人的信息而分散注意力。这感觉真是太好了！于是，我决定每天都去拜访一个不同的朋友。到第五天，我开始反思，没有经常打开手机看其他人正在做什么是不是真的会让我不知所措？ 乔治 16岁 我也坚持了整整七天！说实话，我觉得脱瘾社交媒体没那么难，但我还是把手机交给了爸爸，以防自己屈服于手机！我的哥哥认为我应该充分利用没有手机的时间，所以他带我去查看了我们当地的体育中心。每天一小时的运动使我疲惫不堪，想要早早上床睡觉。脱瘾社交媒体让我变得更健康了！ 马克斯 17岁 我真是不好意思说，我第一天就认输了！我知道那天晚上有个派对，但是没有社交媒体，我记不起来派对在哪里举行！最后，我打开手机查看，却忍不住快速浏览了一下我的社交媒体账户。更糟糕的是，我接下来花了太多时间看新闻，差点没赶上派对！ 主持人 脱瘾社交媒体活动为学校筹集了总计1632.82英镑来用于购买新的体育器材！所有参与的同学们，做得好！看完这个论坛上的帖子后，不难发现这个活动的收获似乎不仅仅是钱，还有其他东西。意识到我们对社交媒体的依赖程度可以帮助我们远离社交媒体，更好地相互交流。 [对应学生用书P29] Ⅰ.重点词汇 核心单词 1．switch v.(用开关)改变，转换 2．profile n.概况 3．towel n.毛巾 拓展单词 4．security n.安全；保证；担保→secure adj.安全的；可靠的 5．motivate v.激发，激励→motivation n.动机；动力→motivated adj.积极的；主动的 6．occupy v.占用，占去(时间)；占据；占领→occupation n.工作；职业；占领→occupied adj.忙于；使用中 7．constantly adv.持续不断地；经常地→constant adj.时常发生的；连续不断的 n.常数，恒量；不变的事物 8．access n.接触的机会→accessible adj.可进入的；可使用的 9．rely v.(为生活或生存而)依赖→reliable adj.可信赖的；可靠的 Ⅱ.重点短语 1．be persuaded to do被说服做…… 2．switch on (用开关)开，打开 3．on reflection经再三考虑；反思 4．be occupied with 专心于；忙于 5．miss out错过；遗漏；失去(机会) 6．be distracted by因……分心，被……分散注意力 7．check out查看；了解清楚；核实 8．be embarrassed to do sth羞于做某事，因做某事而感到尴尬 9．throw in the towel 认输 10．without access to不接触；享受不到；无法使用 11．rely on(为生活或生存而)依赖，依靠 12．step away from 远离 Ⅲ.重点句式 1．with＋宾语＋宾语补足语 With the detox now finished(脱瘾社交媒体活动现在结束了)，they've switched on their devices and they're back online. 2．if从句的省略结构 And what，if anything(如果有的话)，has been learnt from the experience? 3．“do/does/did＋动词原形”结构强调谓语 To be honest，I didn't find the detox too difficult，but I did give my phone to my dad(还是把手机交给了爸爸保管) to avoid giving in! 4．leave＋宾语＋宾语补足语 An hour's sport each day left me tired out(使我筋疲力尽) and wanting to go to bed early. 5．“It seems/seemed that...”意为“看起来……” After reading the posts on this forum，it seems that(看起来) something other than money has also been raised through the detox. [对应学生用书P30] Ⅰ.What's mainly talked about in the passage? A．The result that the Social Media Detox led to. B．The performance that some students showed in the activity. C．The promises that the students made to the parents. D．The changes that the students made after the Social Media Detox. 答案　B Ⅱ.Read the passage and fill in the blanks. Read the passage carefully and then choose the best answer. 1．Which of the following is allowed for the students who take part in the detox? A．Sending messages to their friends. B．Posting photos online. C．Getting money from their friends. D．Reading their friends' blogs. 2．What can we know about Cindy? A．She attended a party during the seven days. B．She visited a few friends during the seven days. C．She messaged her friends on the fifth day. D．She hates receiving messages from other people. 3．Who lacks self-control most according to the text? A．Anna. B．Devon. C．Cindy. D．Max. 4．What's the moderator's attitude towards the campaign? A．Favorable. B．Negative. C．Doubtful. D．Mixed. 答案　1～4　CBDA 1．I bet you're as eager as I am to find out just how many have been motivated enough to last the full seven days! [句式分析] 本句是复合句。bet后是省略了that的宾语从句，该从句中的“how many have been motivated enough to last the full seven days”是find out的宾语从句。 [翻译]　我敢肯定你们跟我一样，急于知道这个活动激励了多少人坚持了整整七天！ 2．On Monday，my classmate and I spoke about what we did at the weekend—it felt really strange not to already know what he had done. [句式分析] 本句是复合句。“what we did at the weekend”是宾语从句；it是形式主语，“not to already know what he had done”是真正的主语，其中know后的“what he had done”是宾语从句。 [翻译]　周一，我和我的同学聊了聊我们周末都做了什么——未能早些知道他到底做了什么还真是不习惯。 3．Doing the detox meant we had to talk and explain what we were doing and thinking! [句式分析] 句中Doing the detox是动词-ing形式作主语；“we had to...thinking”是省略了that的宾语从句，该从句中“what we were doing and thinking”为宾语从句。 [翻译]　脱瘾社交网络意味着我们必须当面交谈，解释自己的所做所想！ [核心词汇·练透] [对应学生用书P31] persuade vt.说服；劝说；使相信 (1)说服某人做某事 说服某人不做某事 (2)persuade sb of sth　使某人相信某事 persuade sb that...　使某人相信…… (3)persuasion n.　说服，劝说 persuasive adj.　有说服力的，令人信服的 (教材原句)At the start of the detox，over 100 students had been persuaded to stop using social media，in ANY form，for seven days. 脱瘾活动开始时，学校成功说服了100多名学生连续七天不使用任何形式的社交媒体。 [练通]——单句语法填空/ 完成句子 (1)The children did everything they could to persuade the family of the plan's benefits. (2)My father advised my sister to go to a dental school and she was touched by his persuasion at last，because his words were so persuasive．(persuade) (3)我把手掌放在他的背上，劝说他参加跑步比赛，希望能鼓励他加入进来。 I put my palm on his back and persuaded him to take/him into taking part in the run，hoping to encourage him to join in.(续写佳句之动作描写) motivate v.激发，激励；成为……的动机(常用于被动语态)(→motivation n.动力，诱因；积极性→motivated adj.积极的，主动的) (1)motivate sb to do sth　激发某人做某事 (2)be motivated by...　被……所激励 (教材原句)I bet you're as eager as I am to find out just how many have been motivated enough to last the full seven days! 相信你和我一样，迫切想知道多少人有足够的动力坚持了整整七天！ [练通]——单句语法填空/ 完成句子 (1)Most people think a certain amount of stress is vital to provide motivation and give purpose to life and it is generally accepted that people are motivated by success.(motivate) (2)我一直在考虑如何激励大卫继续越野跑。 I had been pondering how to motivate David to go on with the cross-country run.(续写佳句之细节描写) on reflection经再三考虑[→reflection n.[C]反映；表达；映像；[U]深思，深思→reflect v.反映；显示；反射(声、光、热等)；认真思考，沉思] (1)reflect on/upon　认真思考 (2)(be) lost in reflection　陷入思考中 (教材原句)But on reflection，I can see how much of my time had been occupied with checking my phone. 但一番反思后，我可以知道查看手机到底占用了我多少时间。 [练通]——单句语法填空/ 完成句子 (1)It seems beautiful that the tall buildings are reflected(reflect) in the lake around which there are many trees. (2)Don't be afraid of mistakes，you have to learn by reflecting on/upon them. (3)听了我的话，他低着头，陷入沉思，似乎在寻找我提出的问题的答案。 At my words，he hung his head，lost in deep reflection，seemingly searching for an answer to the question I had posed.(续写佳句之动作描写) occupy vt.忙着(做某事)，使忙于(做某事)；占用(时间/空间等)；占领；占据(→occupation n.职业；占有) occupy oneself with sth/(in) doing sth 从事于……； 忙于…… be occupied with/in sth/(in) doing sth 从事于……； 忙于…… (教材原句)But on reflection，I can see how much of my time had been occupied with checking my phone.但一番反思后，我可以知道查看手机到底占用了我太多时间。 [练通]——单句语法填空/ 句式升级 (1)The twins soon found themselves occupied (occupy)in cleaning up the kitchen while their father was occupying himself with the breakfast. (2)Choosing an occupation (occupy) takes time，and there are a lot of things you have to think about. (3)Because they were occupied in making and selling popcorn，they spared no time to play around. →Occupying themselves in making and selling popcorn，they spared no time to play around.(现在分词短语作状语) →Occupied in making and selling popcorn，they spared no time to play around.(过去分词短语作状语) 　表示“忙于做某事”的短语还有be busy with sth/(in) doing sth，be employed with sth/(in) doing sth，be engaged in sth等。 access n.接触的机会；(接近的)方法；通路；vt.访问；获取(计算机数据) (1)access to...　……的通路；利用……的权利 have/get access to　(拥有或得到)……的权利/机会 (2)be accessible to　易接近的；能进入的 (教材原句)I knew there was a party happening that evening，but without access to social media I couldn't remember where it was! 我知道那天晚上有个聚会，但是没有社交媒体，我怎么也想不起地点在哪儿！ [练通]——单句语法填空/ 完成句子 (1)It is said that 95% of teenagers either own or have access to a smartphone.(2025·全国二卷) (2)China's central bank announced that the digital fiat currency，or e-CNY，would be accessible (access) in more domestic cities. (3)鉴于你对中国文化很感兴趣，我建议你申请北京大学，在那里你可以接触到最好的中国文化。 Considering your keen interest in Chinese culture，I suggest you apply for Peking University，where you can have/ get access to the best Chinese culture．(应用文佳句之建议信) 　像access，approach，solution，key这样的名词，它们常与介词to连用；名词与介词to的搭配常被当作命题的重点，对此要注意识记。 rely v.(为生存或生活而)依赖，依靠；相信，信赖(→reliable adj.可依靠的；可信赖的) rely on sb/sth for sth 依靠某人/某物提供某物 rely on sb to do sth＝rely on sb's doing sth 指望/相信某人会做某事 rely on it that... 相信……，指望…… (教材原句) Awareness of just how much we rely on social media can help us step away from it and communicate with each other better. 脱瘾活动还让我们意识到自己对社交媒体的依赖程度，从而帮助我们摆脱它的束缚，更好地互相沟通。 [练通]——单句语法填空/ 一句多译 (1)Specifically，it's a farm that relies on/upon new technology.By connecting through the Cloud，BMF is remotely monitored.(2024·新课标Ⅱ卷) (2)Bernard made up his mind to follow their examples to be a reliable(rely)person whom others can rely on for help. (3)你可以相信在你陷入困境时我们会帮助你。 ①You can rely on us to help you when you are in trouble. ②You can rely on it that we will help you when you are in trouble. ③You can rely on our helping you when you are in trouble.(2024·新课标Ⅱ卷) 　在“rely on it＋that从句”中，it是形式宾语，真正的宾语是后面的that从句。与此类似的有“depend on/see to(保证) it＋that从句”“appreciate it＋if从句”“like/hate it＋when从句”。 [重点句型·通关] [对应学生用书P34] leave＋宾语＋宾语补足语 “leave＋宾语＋宾语补足语”结构，该句式意为“让/使某人(物)继续处于某种状态、某地等”。该句式中leave是及物动词，意为“使处于……；听任……”。该结构的常见构成如下： (1)leave ＋宾语＋形容词/副词/介词短语/名词 (2)leave＋宾语＋现在分词 (3)leave＋宾语＋过去分词 (教材原句) An hour's sport each day left me tired out and wanting to go to bed early. 每天一小时的运动使我疲惫不堪，想要早早上床睡觉。 [练通]——单句语法填空/ 完成句子 (1)Preschool children are remarkably bad at hiding.They often cover only their eyes with their hands，leaving the rest of their bodies exposed(expose). (2)Before choosing to study online，consider whether you're a self-motivated learner and if the material seems interesting enough to keep you going(go).(2024·浙江卷1月) (3)He is an adult now，so you'd better leave him to deal(deal) with the problem alone in the future. (4)你最好做一些运动，而不是经常上网，因为运动不仅可以保持你的健康，还可以丰富你的生活。 It's better for you to do some sports instead of surfing the Internet a lot，because sports can not only keep you healthy but also enrich your life．(应用文佳句之建议信) [对应学生用书P34] Ⅰ.教材语块必备 1．Internet users网民 2．as against与……相对照；和……相比较 3．a printed book纸质书 4．a fundraising campaign一次筹款活动 5．pick up one's hobby重拾兴趣爱好 6．update one's profile更新某人的动态/资料 7．have a quick look at快速浏览 8．social media accounts社交账户 9．catch up on了解(已发生的事情) 10．well done做得好 Ⅱ.单词拼写/完成句子 1．She made the switch (改变) from full-time to part-time work when her first child was born. 2．I'm sorry to occupy(占用) your precious time，but I really want to talk with you about the pet problems. 3．凯特的突然离开使我们大家都想知道将要发生什么事。 Kate's sudden departure left us all wondering what was going to happen. 4．随着海洋污染越来越严重，6月8日被联合国正式命名为世界海洋日，旨在提高人们保护海洋的意识。 With the ocean pollution becoming more and more serious，June 8th is officially named by the United Nations as the World Oceans Day，aimed at raising people's awareness of ocean conservation. 5．如果你方便的话，我们8：30在校门口见面。如果不方便，告诉我什么时间最适合你。 If it is convenient for you，let's meet at 8：30 outside the school gate.If not，let me know what time suits you best. [对应学生用书P35] 心理活动描写 Ⅰ.常用词汇 课文词汇 1．difficult to tolerate难以忍受 2．on reflection经再三考虑 3．be occupied with忙于；专心于 4．miss out错过；遗漏 5．be distracted by被……分散注意力 6．to be honest老实说 7．tired out筋疲力尽 8．embarrassed to say不好意思说 9．throw in the towel认输 10．can't resist doing sth忍不住做某事 补充词汇 11．be aware of意识到 12．to put it in another way换句话说 13．think twice三思而后行 14．catch up了解近况，叙旧 15．be addicted to对……上瘾 16．be immersed in沉浸在 17．gather courage鼓起勇气 18．chat with sb与某人聊天 Ⅱ.常用句型 课本原句 1．The detox was more difficult to tolerate than I had expected.I felt like I had lost an arm! Not eating for two days would have been easier! 社交媒体脱瘾比我预期的更加难以忍受。没了社交媒体，就像缺少一只胳膊一般！让我饿两天可能还更容易些！ 2．But on reflection，I can see how much of my time had been occupied with checking my phone. 但一番反思后，我也知道查看手机占用了我太多时间。 3．I managed the whole week! At first，I really felt I was missing out. 我坚持了整整一周！最初，我真的感觉我错过了无数消息。 4．I did all seven days，too! To be honest，I didn't find the detox too difficult，but I did give my phone to my dad to avoid giving in! 我也坚持了整整七天！说实话，我觉得社交媒体脱瘾没那么难，但我还是把手机上交给了爸爸，以防自己屈服于手机！ 其他表达 5．I am aware that it is too distracting to work with the TV on. 我意识到开着电视工作太分散注意力了。 6．I regret that much of my spare time had been occupied with checking the phone. 我很后悔我的很多业余时间都用来看手机了。 Ⅲ.写作微练 1．一年前，他如此沉溺于玩手机以至于感觉离开了手机生活就没有了乐趣。但是很快他意识到了问题的严重性，为了能集中注意力学习，他把手机交给了他的爸爸。 A year ago，he was so addicted to playing with the phone that he even felt life boring without it.But soon he was aware of the seriousness of the problem.He then gave the phone to his father to concentrate on study. 2．我们真的应该鼓起勇气参加社交媒体脱瘾这样的活动，因为这样的活动能帮助我们更好地与身边的人聊天，也能让我们不再对社交网络上瘾。 We really should gather courage to take part in campaigns like social media detox，because such campaigns can help us better chat with the people around us and stop us from being addicted to social networks. 学科网（北京）股份有限公司 $