Unit 4 Information technology Lesson 2 Apps 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“Apps”主题，系统梳理reality、ensure等核心词汇及同根词、常用搭配，讲解set up、hold on等短语和“连词+分词”结构语法点，通过口头转述Apps功能等任务导入，构建从词汇到语法再到技能的学习支架。 其亮点在于以语言能力培养为核心，通过同根词拓展（如realise/realistic）、写作升级（同义句转换）夯实基础，结合AI宠物情绪识别等阅读材料提升思维品质，任务型活动（仿写句子、口头转述）助力学习能力。学生能提升综合语言运用能力，教师可直接利用系统资料高效教学。

UNIT 4　INFORMATION TECHNOLOGY LESSON 2　APPS 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 reality n. the true situation and the problems that actually exist in life, in contrast to how you would like life to be 现实;真实 Her fantasy of promotion came into reality. In reality, this area is extremely safe. ◆同根词 realise v. 实现,将……变为现实;理解;领会;认识到;意识到 She finally realised her dream of winning an Olympic gold medal. It took them a while to realise their mistake. real adj. 真正的;确实的;真实的 The little girl has never seen a real live elephant before. There’s no real reason to worry. really adv. (表明事实或真相)事实上,真正地,真实地;非常,极其 Why don’t you tell us what really happened? It was really cold last night. realistic adj. 现实的;实际的;实事求是的 It’s just not realistic to expect a promotion so soon. ◆常用搭配 come into reality (梦想)实现　in reality 实际上;事实上 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.Your words 　　　　　　(real) made me happy.  2.6G will allow for a new generation of virtual 　　　　　　(real).   3.We should set 　　　　　　　(real) goals.  4.　 　　　　　reality, my grandfather can no longer walk.  In realistic reality really 写作升级(同义句转换) 5.His dream of going to college has come true. (1)His dream of going to college 　　　　　　　　　　.(realise) (2)His dream of going to college ____________________________________　　　　　 　　　　　.(reality) reality has become a reality / has come into has been realised 2 ensure vt. to make sure that sth happens or is definite确保,保证 They took steps to ensure the safety of the passengers. ◆同根词 sure adj. 确信;确知;肯定;有把握;一定,必定,无疑(将会得到或发生) Be sure to fasten your seat belt in a car. He wasn’t even sure of his mother’s name. It is the self⁃assurance of the new generation that makes them sure of their success. ◆常用搭配 be sure to do sth 一定要做某事;务必要做某事　be sure of 对……有把握,确信……;必定 for sure 无疑;肯定　make sure (of) 弄清楚,查明;确保 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.He makes every effort 　　　　　　　　(ensure) trains run as scheduled.  2.No one knows 　　　　　　　　　sure what happened.  3.Be sure 　　　　　　　　(give) your family my regards.  4.You’re always sure 　　　　　　　　a warm welcome there.  单句写作 5.In order to 　　　 　　　　(确保) all of us are in good health, she makes specific plans for us. make sure / ensure (that) of to give for to ensure 3 favour n. a thing that you do to help sb 恩惠;善意的行为 Lisa, can I ask you a favour? =Lisa, can I ask a favour of you? Lisa, can you do me a favour? n. approval or support for sb / sth 赞同;支持 The government spoke in favour of the proposal(提议). The vote was in the government’s favour. ◆同根词 favourable adj. 肯定的;赞同的;支持的;有利的 The disease spreads quickly under favourable conditions. favourite adj. 特别受喜爱的 n. 特别喜爱的人(或事物) What’s your favourite colour? Apples are my favourite. ◆常用搭配 ask sb a favour=ask a favour of sb 请某人帮忙 do sb a favour 给某人以恩惠;帮某人一个忙 in favour of 支持;赞同;有利于　in sb’s favour 有利于某人 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.Asking a favour 　　　　　　　a top CEO was no casual matter.  2.When circumstances are 　　　　　　　　　(favour), we must not forget that there will still be difficulties.  3.I am interested in all kinds of music, among which jazz is my 　　　 　_　　　　(favour).   单句写作 4.The exchange rate is _______________(对我们有利) at the moment. 5.Most of them were 　　　　　　(支持) my opinion while David was against it. in favour of in our favour favourite favourable of 4 confirm vt. to state or show that sth is definitely true or correct 确认;证实 To confirm my predictions, I need to do some tests. Research has confirmed that the risk is higher for women. It is / has been confirmed that this is only a rumour. ◆同根词 confirmed adj. 坚定的;根深蒂固的 He is a confirmed vegetarian(素食主义者). confirmation n. 证实;确认书,证明书 There has still been no official confirmation of this report. ◆常用搭配 confirm sth 证实某事　confirm that / wh⁃ 证实,确定…… confirm sb in sb’s belief / opinion / view 证实某人的信念 / 观点 / 看法 It is / has been confirmed that… 已经确定…… 在空白处填入括号内单词的正确形式 1.Parents are asked to sign 　　　　　　　　(confirm) their child’s choices.  2.It 　　　 　　　　　　　(confirm) that the meeting will take place next week.  3.The daily number of newly cured and discharged (出院) patients exceeded (超过) that of the newly 　　　　　　　　　(confirm) cases.   4.I’m still waiting for 　　　　　　　(confirm) of the test results.  confirmation confirmed is / has been confirmed to confirm 5 set up建起;竖起;建立;成立 They’ve set up roadblocks(路障) around the city. They want to set up their own business. ◆拓展提升 set aside 把……放在一边;留出;拨出　set down 把……放下;记下;写下 set off 出发;引起;拉响;使爆炸　set out to do sth=set about doing sth 开始做某事 在空白处填入1个适当的单词 1.After the earthquake, the people set 　　　　　　　　rebuilding their homes.  2.Some doctors advise setting 　　　　　　　a certain hour each day for worry.  3.Little Tom and his father set 　　　　　　for America last week.  4.He advised the government to set 　　　　　　　some “chat benches” in the local parks.  5.The next morning he hired a boat and set 　　　　　　to find the well⁃known painter.   out up off aside about 6 [一词多义] 写出下列句中黑体词的含义 1.They managed to hold on until help arrived. _________　 2.He held on my hand and shook it warmly. _________　 3.Hold on please; I’m trying to connect you. ______________　 4.The assistant asked him to hold on while the manager was having a meeting. _________ hold on坚持;抓紧;稍等;别挂断(电话) 稍等 别挂断(电话) 抓紧 坚持 7 While listening, pay attention to the words related to the questions…听的时候,要注意与问题有关的词…… while listening“连词+分词(短语)”结构是时间状语从句while you are listening的省略形式。 ◆拓展提升 在时间、条件、让步、方式状语从句中,如果从句的主语与主句的主语一致或从句的主语是it,且从句的谓语中含有be动词时,可以将从句的主语和be动词一起省略,构成“连词+分词 / 形容词 / 介词短语 / 名词”结构。 在空白处填入括号内单词的正确形式 1.While ____________(compete) with his teammates, he hurt his leg. 2.If _________(accept) for the job, you’ll be informed soon. 3.There are some health problems that, when not _________(treat) in time, can become bigger ones later on. 单句写作 4.当被问及为什么没有参加这次赛跑时,他什么也没说,只是微笑了一下。 ____________ why he didn’t take part in the race, he said nothing but smiled. When asked treated accepted competing 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 government c　　　　　　　　 that the paintings were real.  2.We’re not just keeping some old d　　　　　　　　 — we continue to use them.  3.There will be tax increases on a variety of g　　　　　　　　 and services.  4.I am writing to ask you a f　　　　　　　　 about a play we adapted according to the textbook.   5.Hotel _______________(住处) is included in the price of your holiday. 基础要求达标 1 accommodation avour oods evices onfirmed 6.His 　　　　　　　　(最新的) film is one of the funniest I’ve ever seen.  7.Will time travel ever become a 　　　　　　　　(现实)?  8.His novels are a rich source of 　　　　　　　　(素材) for the movie industry.  9.The hospital tries to 　　　　　　　　(确保) that people are seen quickly.  10.In any unsafe situation, simply 　　　　　　　　(按) the button and ask for help.  press ensure material reality latest 1._________ a minute while I get my breath back. 2.We decided to 　　　　　　　　camp for the night.  3.Her name is Alexandra, or Alex 　　　　　　　　.  4.　　　　　　　　 and close the door.  5.Have you 　　　　　　　　how much the trip will cost?  for short　 hold on　 do me a favour　 set up　 figure out 用方框中所给短语的适当形式填空。 2 figured out Do me a favour for short set up Hold on 根据例句和黑体词,参照中文提示仿写句子。 1.【例句】 They make our life much easier, don’t they? 【仿写】 他们每天6点起床,不是吗? _______________________________________________________________ 2.【例句】 As many of our listeners are students, could you tell us something about educational apps? 【仿写】 因为你累了,你最好休息一下。_______________________________________________________________ 3 As you are tired, you had better have a rest. They get up at 6 o’clock every day, don’t they? 3.【例句】 The most difficult thing is finding out what people need and solving real⁃world problems. 【仿写】 我的主要兴趣就是学习外语并研究外国文化。_______________________________________________________________ _______________________________________________________________ 4.【例句】 Would you like me to confirm my account details? 【仿写】 要不要我打电话给你叫辆出租车? _______________________________________________________________ My main interest is learning foreign languages and studying foreign Would you like me to call you a taxi? cultures. 5.【例句】 There must have been an error. 【仿写】 昨晚一定下了雨。_______________________________________________________________ It must have rained last night. 4 根据以下关键信息进行口头转述。 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。 Have you wondered how your pets are feeling? When your dog wags(摇摆) its tail, does that mean it is happy? A new app called Happy Pets can tell you what’s going on. The app uses artificial intelligence (AI) to analyse the facial expressions of cats and dogs. Then it can tell you what breed(品种) your pet is and how it is feeling. It can show the five most common feelings — happy, angry, neutral, sad and scared. Researchers at the University of Melbourne in Australia developed the app. The key technology used in the app is facial recognition, a common use of AI. We can unlock our mobile phones or enter train stations with facial recognition readers. But this is the first time that the tech has been used with animals. The app’s AI was first taught to recognise a picture of an animal. Then, it was taught to recognise the facial features of cats and dogs. Next came the most important step — teaching it to detect(察觉) emotions based on certain facial features. For instance, if a dog tightens up its eyes and mouth while changing the position of its ears, this means the dog is scared. To master this skill, the AI programme “saw” and “read” thousands of example images. How accurate are the results? The researchers think they are trustworthy since the app has been tested many times. Interestingly, they have found that cats are harder to read than dogs. In the future, the app might also be able to analyse a pet’s body to make its readings more accurate. 语篇导读:文章介绍了一款应用程序以及它的原理和功能等基本信息。 1.What is the app Happy Pets used to do?(　　) A.To make pets happy. B.To tell us how the pets are feeling. C.To recognise an animal’s picture. D.To unlock our mobile phones. B 细节理解题。根据第二段中的“it can tell you what breed(品种) your pet is and how it is feeling”可知,这款应用程序可以告知你你的宠物的品种及它的感受。故选B项。 2.What does Paragraph 4 mainly talk about? (　　) A.What emotions the app can recognise. B.What certain facial features mean. C.How people use the app. D.How the app’s AI was trained. D 主旨大意题。根据第四段内容可知,本段主要介绍了这款应用程序的AI是如何训练的。故选D项。 3.What can we know about the app Happy Pets? (　　) A.It has been used with animals for a long time. B.It works harder on dogs than cats. C.It uses facial recognition technology. D.It can analyse a pet’s body. C 推理判断题。根据第三段中的“The key technology used in the app is facial recognition, a common use of AI.”可知,这款应用程序使用的关键技术是面部识别。所以C项(It uses facial recognition technology.)符合题意。故选C项。 4.What is the purpose of the author to write the passage? (　　) A.To show how to make animals happy. B.To introduce a study on animals. C.To show how to play with animals. D.To introduce a new app. D 推理判断题。通读全文可知,本文主要介绍了一款新的应用程序的原理及功能等基本信息。所以,作者写这篇文章就是为了介绍这款新的应用程序。故选D项。 (　　)1.A.returned B.offered 　C.celebrated D.sent (　　)2.A.textbook B.calculator 　C.teacher D.laptop (　　)3.A.usage B.language 　C.code D.message (　　)4.A.first B.good 　C.second D.bad 阅读短文,从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。 I got to know a homeless man, Leo. I 　　1　　 him two options that I could either give him a 　　2　　 and teach him how to write computer 　　3　　, or give him $100 in cash. He accepted my 　　4　　 offer, even though he didn’t know what coding was. 2 A C D B I am a(n) 　　5　　 believer in the power of 　　6　　. I was homeschooled by my mother, herself a software engineer. By the age of 12, I had 　　7　　 my own business designing websites and had earned $30,000. Writing code is a 　　8　　 and much rewarding skill, so I was sure that if Leo learnt how to do it, that could be a way for him to turn things 　　9　　.  (　　)5.A.sick B.firm 　C.poor D.amused (　　)6.A.experience B.activity 　C.education D.recognition (　　)7.A.set up B.kept up 　C.held up D.made up (　　)8.A.difficult B.common 　C.valuable D.simple (　　)9.A.down B.off 　C.away D.around D C A C B I bought Leo a second⁃hand laptop and three books on Java, the programming language. Leo had used computers 　　10　　 at school but didn’t have an email address and didn’t know how to do very basic things such as copying and pasting(粘贴) text. 　　11　　 he has an incredible memory and can 　　12　　 information almost word for word. Our goal is to 　　13　　 an app. Leo came up with the idea: a car⁃sharing app that 　　14　　 the amount of CO2 emissions you’ve avoided; he is concerned about the 　　15　　.  (　　)10.A.at least B.in return C.a little D.for sure (　　)11.A.But B.While C.And D.So (　　)12.A.ignore B.recall C.explain D.judge (　　)13.A.spell B.admit C.discover D.start (　　)14.A.monitors B.masters C.contains D.creates (　　)15.A.car B.air C.computer D.environment D A D B A C 语篇导读:文章介绍了作者帮助无家可归的利奥学习电脑编程,进而改变其人生的故事。 1.作者给他提供了两个选择,且根据下文“He accepted my 　　　offer”可知,应选offer“提供”。 return返回,归还;celebrate庆祝;send发送。   2.作者给他提供了两个选择:一个是给他一个笔记本电脑,并教他写代码,另一个是给他100美元现金。根据下文“I bought Leo a second⁃hand laptop and three books on Java”可知,要给他的是笔记本电脑。textbook教科书;calculator计算器;teacher老师;laptop笔记本电脑。 3.根据下文“even though he didn’t know what coding was”可知,此处指教他写代码。usage用法;language语言;code代码;message信息。 4.他接受了作者提供的第一个选择,尽管他不知道什么是编码。根据下文“even though he didn’t know what coding was”可知,尽管他不懂编码,可他还是接受了第一个选择。first第一;good好的;second第二;bad坏的。 5.根据下文“I was sure that if Leo learnt how to do it, that could be a way for him to turn things 　　　　”可知,作者坚信教育有强大的力量,能改变利奥的人生。sick生病的;firm坚定的;poor穷的;amused愉悦的。   6.根据下文“I was homeschooled by my mother, herself a software engineer.By the age of 12, I had 　　　　my own business designing websites and had earned $30,000.”可知,作者介绍了自己的受教育经历,所以是在谈“教育”。experience经历,经验;activity活动;education教育;recognition辨认,认可。   7.到12岁时,作者已经建立了自己的公司,设计网站,赚了3万美元。根据语境及搭配可知,此处指作者建立了自己的公司。set up建立;keep up坚持;hold up阻止;make up编造,弥补。 8.根据上文“By the age of 12, I had 　　　my own business designing websites and had earned $30,000.”可知,编码这项技能有价值,且回报高。difficult困难的;common常见的;valuable有价值的;simple简单的。   9.根据语境可知,作者认为学会编码能改变利奥的人生。turn down拒绝,调低;turn off关闭;turn away转过脸去;turn around扭转。 10.根据下文“but didn’t have an email address and didn’t know how to do very basic things such as copying and pasting(粘贴) text”可知,虽然利奥曾经在学校少量使用过电脑,但他没有邮箱地址,也不知道怎样做复制、粘贴文本等非常基础的事。at least至少;in return作为回报;a little一点;for sure确定。 11.但是他有超强的记忆力,并能几乎一字不差地回忆信息。上文说利奥不知道怎样复制、粘贴文本,下文说他能几乎一字不差地回忆信息,上下文之间是转折关系。but但是;while当……的时候;and和;so因此。 12.根据上文“he has an incredible memory”可知,他记忆力超强,所以能一字不差地回忆信息。ignore忽视;recall回忆;explain解释;judge判断。故选B项。 13.根据下文“Leo came up with the idea: a car⁃sharing app that 　　　　the amount of CO2 emissions you’ve avoided”可知,此处指创建一个应用程序。spell拼写;admit承认;discover发现;start创建。   14.根据下文“the amount of CO2 emissions you’ve avoided”可知,利奥想出了一个主意,用一个汽车共享应用程序监测二氧化碳的排放量。monitor监测;master精通,掌握;contain包含;create创造。 15.根据上文监测二氧化碳的排放量可知,他关心“环境”。car汽车;air空气;computer电脑;environment环境。 谢谢观看! $