U2 Period 1 Understanding -【优化探究】2025-2026学年新教材高中英语选择性必修第二册同步导学案配套PPT课件（外研版）

选择性必修 第二册 Unit 2　Improving yourself 1 (主题语境：人与自我——自我完善) 【单元知识目标】 重点单词 security；switch；motivate；occupy；profile；constantly；towel；access；rely；deadline；appropriate；clarify；promote；distract；item；invest；vision；objectively；nail 重点短语 persuade sb.to do；switch on；on reflection；be occupied with；miss out；be distracted by；check out；be embarrassed to do；throw in the towel；without access to；rely on；step away from；vary from...to...；max out；barrier to...；in contrast to；in control of；the here and now；put aside 单元语法 过去完成时的被动语态 单元写作 读后感 【单元话题词汇】 Period 1　Understanding ideas—Reading comprehension 5 内容索引 NEIRONGSUOYIN 课时作业 巩固提升 必备知识 自主学习 6 必备知识 自主学习 7 Part 1　教材原文助读 SOCIAL MEDIA DETOX① Moderator② Today marks the last day of the Social Media Detox，Brenton High’s fundraising campaign③ for new sports equipment.At the start of the detox，over 100 students had been persuaded to④ stop using social media，in ANY form， for seven days. This meant⑤ no messaging friends， no posting photos， no blogging—nothing.They had been promised money by family and friends for each day spent without using social media. They were excited. They were nervous.But could they do it?  8 过去完成时的被动语态。 ANY大写表示强调，说明学生不得以任何形式使用社交媒体。 过去分词短语作后置定语，修饰each day。 ①detox/ˈdiːtɒks/n.[U]脱瘾 ②moderator/ˈmɒdəreItə/n.[C]主持人 moderate vt.& vi.主持(讨论、辩论等) ③fundraising campaign募捐活动 fundraising/ˈfʌndˌreIzIŋ/n.[U]募捐，筹款 ④persuade sb. to do sth.说服某人做某事 persuade vt.说服；劝说；使相信 ⑤mean vt.(meant，meant)意味着；打算 mean doing sth.意味着做某事 mean to do sth.打算做某事 10 社交媒体脱瘾 主持人 今天是社交媒体脱瘾的最后一天。社交媒体脱瘾是布伦顿高中为购买新的体育设备而发起的募捐活动。脱瘾活动初期，学校说服100多名学生连续七天停止使用任何形式的社交媒体。这意味着不能给朋友发消息，不能上传照片，不能发博客——什么都不能做。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? 11 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 last⑨ the full seven days! And what，if anything，has been learnt from the experience?  12 bet后跟的是省略了that的宾语从句；其中“as eager as I am”属于“as...as...”结构，表示“与……一样……”；find out后的how many引导宾语从句。 if型省略结构，用在问句中可表示在有了一番表达或议论后的转折，此时if anything意为“究竟”。 13 ⑥switch on(用开关)开，打开 switch off关(电灯、机器等) switch/swItʃ/v.(用开关)改变，转换 ⑦I bet我敢肯定，我敢保证。表示说话者对某事很有把握或信心。 ▶I bet he will win.我敢肯定他会赢。 14 ⑧motivate/ˈməʊtIveIt/vt.激发，激励 motivate sb.to do sth.激励某人做某事 motivation n.[C，U]动机；[U]动力 motivated adj.积极的，主动的 ⑨last 熟词生义 vt.& vi.(在困境等中)坚持下去，熬过(困境等) ▶He won’t last long in that job.那份工作他干不了多久。 15 脱瘾活动结束后，他们已经打开设备，重返网络。我敢肯定你们跟我一样急于知道有多少人有足够的动力坚持了整整七天!而他们究竟又从此次经历中学到了什么? 16 Anna 17 I lasted two days. The detox was more difficult to tolerate⑩ than I had expected. 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 occupied with⑫ checking my phone. I’m now trying to spend less time online and more time picking up my hobbies.  17 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之间是逻辑上的动宾关系。 本句使用了虚拟语气，表示对过去情况的假设。 18 ⑩tolerate vt.忍受，容忍 [同义]put up with/stand/bear ⑪on/upon reflection经过慎重思考 reflection n.[U]沉思，深思 ⑫be occupied with...被……占据 occupy/ˈɒkjʊpaI/vt.占用，占去(空间、面积、时间等) 19 安娜 17岁 我坚持了两天。社交媒体脱瘾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一般!两天不吃东西可能(比这)更容易一些!但一番反思后，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，多花些时间来重拾自己的爱好。 20 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. 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.  21 it是形式主语，真正的主语是not to already know what he had done，其中what引导宾语从句。 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。 本句为主从复合句。其中动词-ing短语doing the detox作主语；meant后接省略了that的宾语从句，该宾语从句中又包含一个what引导的宾语从句，充当explain 的宾语。 22 ⑬profile/ˈprəʊfaIl/n.[C]概况，简介 update one’s profile更新某人的概况 23 德文 16岁 我坚持了四天。周一，我和同学聊了聊我们周末都做了什么——我并不知道他都做了些什么，这感觉太奇怪了。因为我们通常都会上传照片，更新各自的动态。参与脱瘾活动意味着我们必须交流，解释自己的所做所想!这让我意识到已经遗忘了的真正沟通的重要性。 24 Cindy 18 I managed the whole week! At first， I really felt I was missing out⑭.Then， instead of messaging my friend， I went round to⑮ her house.Without our phones，we had a proper⑯ conversation for over two hours， without being distracted⑰ 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 constantly⑱ checking my phone to see what everyone else was up to⑲ ?  what引导的宾语从句，且what在从句中作宾语。 25 ⑭miss out错失取乐(或获利等)的机会(常与介词on搭配) ▶Prepare food in advance to ensure you won’t miss out on the fun!事先准备好食物，确保你不会错失取乐的机会! ⑮go round to访问，参观(附近某处)；拜访(某人) ⑯proper 熟词生义 adj.真正的，像样的，名副其实的 26 ⑰distract/dIˈstrækt/vt.分散(注意力)，使分心 be distracted by...因……分心，被……分散注意力 distract one’s attention分散某人的注意力 distraction n.[C，U]分散注意力的事物 ⑱constantly/ˈkɒnstəntli/adv.持续不断地；经常地 ⑲be up to sth.正在做某事 ▶What are you up to tonight?你今晚打算干什么呢? [比较]be up to sb.由某人决定 ▶It’s not up to you to tell me how to do my job.我如何做工作不是由你决定的。 27 辛迪 18岁 我坚持了整整一周!最初，我真的感觉自己错过了无数消息。后来，我去了朋友家，而不是给她发消息。没有手机的我们畅谈了两个多小时，且没有被其他人的消息干扰。这感觉真是太好了!接下来我决定每天去见一个不同的朋友。到第五天时我在想，当我不再持续查看手机去看其他所有人都在干什么的时候，我真的错失了什么吗? 28 George 16 I did all seven days， too! To be honest⑳， 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 out㉑ our local sports centre. An hour’s sport each day left me tired out㉒ and wanting to go to bed early . The detox made me healthier!  29 替代上文中出现的lasted或managed。 本句是由but连接的并列句。不定式短语to be honest为独立成分；第一个分句中使用了“find＋宾语＋宾语补足语”结构；第二个分句中，助动词did用于强调谓语，不定式短语to avoid giving in作目的状语。 “leave＋宾语＋宾语补足语”结构，此处用形容词短语tired out与动词-ing短语“wanting to...early”一起作宾语补足语。 30 ⑳to be honest老实说，说实话 ㉑check out 察看，观察(有趣或有吸引力的人或事物) ㉒(be) tired out 疲惫不堪 [同义](be) worn out/(be) exhausted 31 乔治 16岁 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，不过我还是把手机交给了爸爸保管，以防自己半途而废!哥哥认为我应该充分利用没有手机的时间，所以带我去了我们当地的体育中心。每天一小时的运动使我疲惫不堪，只想早点上床睡觉。社交媒体脱瘾让我变得更健康了! 32 Max 17 I’m embarrassed to㉓ say that I threw in the towel㉔ on the first day! I knew there was a party happening that evening ，but without access to㉕ social media I couldn’t remember where it was ! In the end，I turned on my phone to check， but couldn’t resist㉖ having a quick look at㉗ my social media accounts㉘.What’s worse㉙，I then spent so much time catching up on㉚ news，I almost missed the party!  33 此处动词-ing短语作后置定语，party与happen之间是逻辑上的主谓关系。 where引导的宾语从句。 34 ㉓be embarrassed to do sth.因做某事而感到尴尬(不定式作原因状语) ㉔throw in the towel认输 towel/ˈtaʊəl/n.[C]毛巾 文化采风 一般认为这个表达源自拳击运动，原本指拳击运动员的经理或助理向擂台扔毛巾以示认输的做法，现在用于表示“放弃，认输”。 35 ㉕without access to没有使用/接近……的机会 access/ˈækses/n.[U](使用或见到的)机会(常与介词to连用) ㉖can’t resist doing sth.(=can’t help doing sth.)忍不住做某事 resist doing (sth.)抵制做某事的诱惑 resist vt.& vi.忍住，抵挡 ㉗have a quick look at快速看一下 ㉘social media account社交媒体账户 ㉙what’s worse 更为糟糕的是 [同义]worse still/to make matters worse/even worse ㉚catch up on了解(已发生的事情) 36 马克斯 17岁 我都不好意思说自己第一天就认输了!我知道那天晚上有个派对，但是没有社交媒体，我怎么也记不起来地点在哪儿!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刷新动态，差点没赶上派对! 37 Moderator The detox raised a total of ￡1，632.82 for new school sports equipment! Well done， everyone who took part! After reading the posts㉛ on this forum，it seems that something other than㉜ money has also been raised through the detox. Awareness of just how much we rely on㉝ social media can help us step away from㉞ it and communicate with each other better.  本句包含“it seems that...”句式，其中that引导表语从句。 38 ㉛post n.帖子；博文 ㉜other than除……之外；不同于，非 ㉝rely on依赖，依靠 rely/rIˈlaI/vi.(为生活或生存而)依赖 ㉞step away from 远离，离开 39 主持人 此次社交媒体脱瘾活动为学校筹集了总计1 632.82英镑，用于购买新的体育设备!所有参与的同学们，做得好!看了这个论坛上的帖子，这个活动对人们的影响似乎远不止通过活动筹集到的钱。意识到我们对社交媒体的依赖程度可以帮助我们远离它，更好地互相交流。 40 Part 2　语篇研析 1.Match the main ideas with paragraphs. ①Para.1-2　 a.Student representatives share their experiences. ②Para.3-7 b.Introduce the fundraising campaign in Brenton High. ③Para.8 c.The detox raised money and awakened consciousness. 答案：①—b　②—a　③—c 41 2.What’s the main idea of the text? A.The result that the Social Media Detox led to. B.The promises that the students made to the parents. C.The performance that some students showed in the campaign. D.The changes that the students made after the Social Media Detox. 答案：C 42 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. 答案：C 43 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. 答案：B 44 3.Who lacks self-control most according to the text? A.Anna.　　　　　　　 B.Devon. C.Cindy. D.Max. 答案：D 45 4.What’s the moderator’s attitude towards the campaign? A.Favorable. B.Negative. C.Doubtful. D.Mixed. 答案：A 46 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_________从 句，该从句中的“how many have been motivated enough to last the full seven days”为_________从句。 [翻译]　_________________________________________________ ____________________ 宾语 宾语 我敢肯定你们跟我一样急于知道有多少人有足够的动力坚持了整整七天! 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________从句；it是_________，“not to already know what he had done”是______________，其中know后的“what he had done”是_________从句。 [翻译]　_________________________________________________ ______________________________________ 宾语 形式主语 真正的主语 宾语 周一，我和同学聊了聊我们周末都做了什么——我并不知道他都做了些什么，这感觉太奇怪了。 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_________； “we had to...thinking”为省略了that的_________从句，该从句 中“what we were doing and thinking”为_________从句。 [翻译]　_________________________________________________ ________ 主语 宾语 宾语 参与脱瘾活动意味着我们必须交流，解释自己的所做所想! Brenton High launched a fundraising campaign for new sports equipment，1._________ is called the Social Media Detox. More than 100 students had been persuaded 2. _________ (stop) using social media for a whole week at the start of it.  Anna lasted two days. The detox was more difficult to tolerate than she 3. ______________ (expect). But she can see how much of her time had been occupied 4. _________ checking her phone. She’s now trying to spend 5. _________ (little) time online and more time picking up her hobbies.  which to stop had expected in/with less Devon lasted four days. 6._________ (do) the detox meant he and his classmates had to communicate face to face! It made him realise the value of real contact that he had forgotten. Cindy lasted the whole week 7. _____________ (successful)! Without phones， she and one of her friends had a proper conversation. It felt so good! George did all seven days， too! He gave his phone to his dad to avoid giving in. His brother 8. _________ (take) him to check out their local sports centre. The detox made him healthier! Doing successfully took Max threw in the towel on the first day! When he switched 9._________ his phone to check the address of a party， he couldn’t resist having a quick look at his social media accounts. It seems that something other than money has also been raised through the detox. 10. ___________ (aware) of just how much we rely on social media can help us step away from it. on Awareness 课时作业 巩固提升 阅读理解 A Today，with most of us owning a smartphone that allows us to post pictures or videos on social media wherever and whenever we want， oversharing has become unprecedentedly harder to avoid. But the tricky thing is that people are unaware that they’re oversharing. It can only be triggered (引起) by their friends and family. A survey shows that every two in three people in the US think their friends share too much on social media. Oversharing can have negative influences. For instance， it can put your personal information at risk. When you update your status， or simply recall an experience on social networking sites， chances are that you are divulging critical personal information. According to a Canadian survey， 45% of people aged 18-34 “overshare” their financial information online. “Young people share payment card information via e-mail， loan out their cards， and don’t keep their PIN confidential，” said a reporter. This behavior mirrors similar habits of sharing personal information on social media sites. They’re really not totally aware of who has access to this information and who else can be seeing this information and what could be done with it. “Oversharing contributes to a larger culture in which such behavior is considered appropriate or even desirable，” said Seidman， associate professor at Albright College in the US. Elizabeth Bernstein， a US-based educator， said， “The constant increase of oversharing is partially connected with the wild use of social media as a subconscious (下意识的) attempt to control anxiety. We actually use a lot of mental energy to try to manage other persons’ impressions of us by oversharing.” Moreover， oversharing online can damage effective communication in real life. “Having such easy access to so many people makes communication superficial (肤浅的)，”said Chen，a psychologist at South China Normal University. “In the end， the lack of deep communication hurts strong social bonds， particularly friendships.” [语篇解读]　本文是一篇说明文，主要介绍了在社交媒体上过度分享的负面影响，呼吁人们避免过度分享。 1.Why is oversharing hard to avoid? A.It can seldom be realized by people. B.It is always expected by close friends. C.It has already become a habit of many people. D.It is welcomed by social media to make profits. 答案：A 2 3 1 4 细节理解题。根据第一段中的“But the tricky thing is that people are unaware that they’re oversharing.”可知，过度分享变得很难避免是因为人们没有意识到过度分享的问题。 2 3 1 4 2.What does the underlined word “divulging” probably mean in paragraph 2? A.Handing out.　　　　　 B.Giving away. C.Receiving. D.Researching. 答案：B 2 3 1 4 词义猜测题。根据第二段中的“Oversharing can have negative influences. For instance， it can put your personal information at risk.”可知，过度分享会产生负面影响，例如，它会使你的个人信息处于危险之中。再根据画线词所在句可知，这句话是对上一句话的说明，故B项与画线词意思最接近，意为“泄露”。 2 3 1 4 3.How does the author support his argument? A.By sharing his personal experience. B.By presenting some classic cases in history. C.By analyzing advantages and disadvantages. D.By giving experts’ opinions and research findings. 答案：D 2 3 1 4 推理判断题。根据第三段中的“According to a Canadian survey”和第四段中的“said Seidman...Elizabeth Bernstein”可知，作者通过列举专家的观点和研究结果来支持自己的论点。 2 3 1 4 4.What message does the author want to convey in the text? A.Try to avoid oversharing on the Internet. B.Online communication hurts friendships. C.Make every effort to cut down on screen time. D.Oversharing becomes acceptable to the majority. 答案：A 2 3 1 4 推理判断题。根据全文内容，尤其是第一段中的“But the tricky thing is that people are unaware that they’re oversharing.”和最后一段中的“Moreover，oversharing online can damage effective communication in real life.”可推知，作者通过本文想要提醒人们尽量避免在社交媒体上过度分享。 2 3 1 4 B The American Academy of Pediatrics has warned about the potential negative effects of social media on young kids and teens. But the same risks may be true for adults. A review study suggests addiction symptoms， such as failure to pay attention to personal life， procrastination and escapism， appear to be present in some people who use social media excessively (过度地). A study also shows that when people stop using the Internet， they also go through small but measurable physical effects. Rather than promoting health， as frequent interactions (互动) with offline social networks do， the findings show that interacting with social media may predict the opposite result for young adults—it may undermine it. In fact， another study found that social media use is linked to greater feelings of social isolation (隔离). We fall into the trap of comparing ourselves to others as we check our social media pages. The study looked at how we make comparisons with others’ posts， in “upward” or “downward” directions—that is， feeling that we are either worse or better off than our friends. It turned out that both types of comparisons made people feel worse， which is surprising， since in real life， only upward comparisons make people feel bad. But in the social network world， it seems that any kind of comparison is linked to depressive symptoms. All of this is not to say that there is no benefit of social media—obviously it keeps us connected across great distances. But occupying yourself with social networks when you have some time to kill is very likely a bad idea. If you are feeling brave， try taking a little break， and see how it goes. And if you are going to keep “using” it， then at least try to use it reasonably. [语篇解读]　本文是一篇说明文。多项研究表明，过度使用社交网络有很多负面影响，因此作者建议人们要适度使用社交媒体。 5.What might researchers think about “use social media excessively”? A.It’s problem behavior. B.It’s costly and time-consuming. C.It’s sometimes a solution to social isolation. D.It’s leading people to become imaginative. 答案：A 5 6 7 8 细节理解题。根据第一段最后一句可知，一些过度使用社交媒体的人有成瘾症状，因此过度使用社交媒体是问题行为。 5 6 7 8 6.What does the underlined word “undermine” in paragraph 2 probably mean? A.Present. B.Destroy. C.Check. D.Ensure. 答案：B 5 6 7 8 词义猜测题。根据画线词所在句可知，使用社交媒体可能会对年轻人产生相反的结果，而不是增进健康。由此可推知，undermine是promoting(增进)的反义词，B项“破坏”符合语境。 5 6 7 8 7.What does the finding of the study mention in paragraph 3? A.Social media are being given too much importance. B.Young social media users feel more isolated than their elders. C.All kinds of comparisons on social media upset people. D.Downward comparisons are linked closer to depression than upward ones. 答案：C 5 6 7 8 细节理解题。根据第三段中的“But in the social network world， it seems that any kind of comparison is linked to depressive symptoms.”可知，社交媒体上任何类型的比较都会使人沮丧。 5 6 7 8 8.What is the main idea of the text? A.Social media affect people’s mental health. B.Comparing ourselves with others may lead to depression. C.Social networks have more advantages than disadvantages. D.Nowadays people tend to turn to the Internet for satisfaction. 答案：A 5 6 7 8 $$