Unit 3 Our digital lives-2026-2027学年八年级英语上册知识点精讲（沪教版）

U3 Our digital lives 知识点精讲 treatment;company;smoothly;waitdigital;social;message;mobi ⊙单元核心词汇 le;positive;negative;effect;opinion;comment;major;breakthroug h;connect to;bring big changes to;in person 。单元同步语法 形容词比较级与最高级 。单元文章对话 重点句型讲练 教材同步词汇全解全练 重点1 单元词汇 1.treatment/'tri:tment/n.治疗；对待；处理 词形变化：treat(v.治疗；对待)；treated(过去式/过去分词) 搭配：medical treatment医疗；treatment for....的治疗 例句：He needs medical treatment..他需要医疗治疗。 2.company/kAmpeni/n.公司；倍陪伴 词形变化：companion(n.同伴)；accompany(M.陪伴) 搭配：keep sb.company陪伴某人 例佝：My father works in a big company.我父亲在一家大公司工作。 3.smoothly/'smu:li/adv.平滑地；顺利地 词形变化：smooth(adj.平滑的)；smoothness(n.平滑) 搭配：go smoothly进展顺利 例句：Everything went smoothly.一切进展顺利。 4.wait /wert/v.等待；等候 词形变化：waiter(n.服务员)；waitress(n.女服务员) 搭配：wait for等待；can't wait to do迫不及待做某事 例句：Please wait for me at the gate.请在大门等我。 5.digital/dd3 rtl/adj..数字的；数码的 词形变化：digit(n.数字)；digitally(adw.数字地) 搭配：digital camera数码相机；digital age数字时代 例句：e live in a digital world.我们生活在数字世界。 6.social/'su/adj.社会的；社交的 词形变化：society(n.社会)；socially(acv.社交上) 搭配：social media社交媒体；social life社交生活 例佝：Teenagers love social media.青少年喜欢社交媒体。 7.message/'mesrd:3n.消息，信息；v.发送消息 词形变化：messenger(n.信使) 搭配：send a message发消，息；text message短信 例佝：I got your message..我收到了你的消息。 8.mobile/'meubarl/adj.可移动的；移动的n.手机 词形变化：mobility(n.移动性) 搭配：mobile phone手机；mobile home活动房屋 例句：She is on her mobile phone.她在用手机。 9.positive/ppzetrv/adj..积极的；肯定的；正面的 词形变化：positively(ad.);positivity(n.) 反义词：negative 搭配：positive attitude积极态度；positive effect积极作用 例句：Think positive thoughts.想积极的事情。 10.negative/negetrv/adj..消极的；否定的；负面的 词形变化：negatively(adv.);negativity(n.) 搭配：negative effect负面影响；negative answer否定▣答 例句：Don't be so negative.别这么消极。 11.leffect /I'fekt/n.影响；效果；作用 词形变化：effective(adj.有效的)；effectively(adv.) 搭配：have an effect on对…有影响；side effect副作用 例佝：The rain has a good effect on crops.雨水对庄稼有好处。 12.opinion/e'pInjen/n..意见；看法 词形变化：opinionated(adj.固执己见的) 搭配：in my opinion依我看；give an opinion发表意见 例句：In my opinion,.this is a good idea.依我看，这是个好主意。 13.comment/'kpment/n.评论；意见；v.评论 词形变化：commentator(n.评论员) 搭配：make a comment发表评论；no comment无可奉告 例佝：Please leave a comment below..请在下面留言。 14.major/merd3(r)/adj.主要的；重要的；重大的 词形变化：majority(n.多数；minor(adj.次要的，反义词) 搭配：major problem主要问题；major breakthrough重大突破 例句：This is a major city.这是一个主要城市。 15.breakthrough/'breIkOru:ln.突破；重大进展 词形变化：break through(动词短语，突破) 搭配：make a breakthrough取得突破；scientific breakthrough科学突破 例句：Scientists made a breakthrough in medicine..科学家在医学上取得了突破。 16.connect to短语.连接到；使.连接 词形变化：connection(n.连接)；connector(n.连接器) 搭配：connect Ato B把A连接到B;be connected to与相连 例句：Connect the printer to the computer..把打印机连接到电脑。 17.bring big changes to短语.给带来巨大变化 词形变化：change(n.N.);big(adj,);bring(.) 例句：The Internet brings big changes to our life.互联网给我们的生活带来巨大变 化。 18.in person短语.亲自；本人 搭配：meet in person亲自见面；appear in person亲自出现 例句：I will talk to him in person.我会亲自和他谈。 考点通关 单元词汇 1.The doctor gave him proper (treat)for his illness 2.My uncle owns a big (company).He is the boss. 3.The plan went (smooth)and we finished on time 4.I can't (wait)to see my favourite singer. 5.We use (digit)devices every day. 6.Social media helps people keep in touch. 7.She sent a text (message)to her mother. 8.Many people own a (mobile)phone now. 9.Think (positive),and you will feel better 10.The news had a (negatively)effect on him. 11.The medicine has a good (effective)on the patient. 12.What is your (opinion)about this plan? 13.He made a funny (comment)on the photo. 14.Air pollution is a (majority)problem in big cities. 15.The (breakthrough)in science changes the world. 16.Please (connection)the mouse to the computer. 17.Mobile phones (bring)big changes to our daily life. 18.She wanted to meet the star (person). (二)短文填空 Technology 1. big changes to our life.We use 2. cameras and 3. phones every day.Social 4. helps us send 5 and share 6. The Internet 7. us to the world.It has a 8 effect on study and work.But it also has some 9. effects.For example, young people spend too much time online.In my 10. we should use it wisely.A major 11. in technology often makes life easier.Everything goes 12. when we know how to use it.However,we should also 13 for new inventions.Sometimes the best ideas come when we are patient.Let's 14. technology as a tool,not a master. 参考答案 1.treatment;2.company;3.smoothly;4.wait;5.digital;6.Social;7. message;8.mobile;9.positive;10.negative;11.effect;12.opinion; (一）单句填空 13.comment;14.major;15.breakthrough;16.connect;17.bring;18. person 1.brings;2.digital;3.mobile;4.media;5.messages;6.opinions;7 (二)短文填空 connects;8.positive;9.negative;10.opinion;11.breakthrough;12 smoothly;13.wait;14.treat 教材同步语法全解全练 重点2 单元语法 形容词比较级与最高级 情况 构成方法 例词 般单音节词 词尾加-er/-est tall→taller→tallest 以e结尾的单音节词 加-r/-st nice→nicer→nicest 以"辅音+y”结尾的词 happy→happier→ 变y为i再加-er/-est happiest 重读闭音节结尾且末尾只有 双写该字母再加-er/-est big→bigger→biggest 一个辅音字母 beautiful→more 多音节词和部分双音节词 前面加more/most beautiful→most beautiful 不规侧变化 需单独记忆 good/well→better→ best;bad/badly-worse →worst;;many/much→ more→most:little→less →least;;far→ farther/,further→ farthest/furthest 考点通关 单元语法 语法专练一：单项选择(8题) 1.Tom is than his brother. A.tall B.taller C.tallest D.more tall 2.This question is of all. A.easy B.easier C.easiest D,the easiest 3.My sister sings in our family. A.good B.better C.best D.the best 4.The weather today is that yesterday. A.as cold as B.colder C.coldest D.more cold 5.Which animal is a dog or a cat? A.cute B.cuter C.cutest D.the cutest 6.He is student in his class. A.clever B.cleverer C.the cleverest D.more clever 7.This watch is than that one. A.much expensive B.more expensive C.most expensive D.expensive 8.She did in the exam this time. A.bad B.worse C.worst D.the worst 语法专练二：语法填空(10题) 用所给词的适当形式填空。 1.This book is (interesting)than that one. 2.He is (young)boy in the team 3.She runs (fast)than her sister. 4.Which is (big),the sun or the moon? 5.Maths is (difficult)subject for me. 6.Today is (hot)than yesterday. 7.Mike is (popular)student in our school. 8.This road is (wide)than that one. 9.I think Chinese is (important)than English. 10.She is (careful)girl I have ever met. 参考答案 语法专练一：单项选择 1.B;2.D;3.D;4.A;5.B;6.C;7.B;8.B 1.more interesting;2.the youngest;3.faster;4.bigger; 语法专练二：语法填空 5.the most difficult;6.hotter;7.the most popular; 8.wider;9.more important;10.the most careful 教材同步文章句型精讲 重点3 文章句型 A computer is any machine that can be programmed with a set of instructions. 结构：主语+be+名词+that引导的定语从句 中文：计算机是任何可以用一组指令编程的机器。 2.The first machine with a program was designed by Charles Babbage and his student Ada Lovelace. 结构：主语+be+过去分词+by+动作执行者（被动语态） 中文：第一台带程序的机器是由查尔斯巴贝奇和他的学生埃达洛芙莱斯设计的。 3.Ada realized that a computer program could do a lot more. 结构：主语+realized+that宾语从句 中文：埃达意识到计算机程序可以做更多事情。 4.The Turing machine could do all kinds of calculations,and it could also run different programs. 结构：主语+could+动词原形；and连接并列谓语 中文：图灵机可以做各种计算，它也可以运行不同的程序。 5.Scientists built early computers in England and Germany.They were the size of a room! 结构：主语+动词过去式+宾语；主语+be+the size of+名词 中文：科学家在英国和德国建造了早期计算机。它们有房间那么大！ 6.This was a major breakthrough in the history of computers. 结构：This+be+名词+in+名词短语 中文：这是计算机史上的一次重大突破。 7.Thanks to the microchip,computers and other electronic devices got faster and smaller very quickly. 结构：Thanks to+名词，主语+got+比较级+and+比较级 中文：多亏了微芯片，计算机和其他电子设备很快变得更快更小。 8.Experts didn't believe that anybody wanted a computer at home. 结构：主语+didn't believe+that宾语从句 中文：专家们不相信有人想要在家里有一台电脑。 9.Today's smartphones can connect to the internet and run all kinds of different apps. 结构：主语+can+动词原形+and+动词原形 中文：今天的智能手机可以连接互联网并运行各种不同的应用程序。 10.The arrival of smartphones has started a new era in digital technology. 结构：主语+have/has+过去分词+宾语 中文：智能手机的到快开启了数字技术的新时代。 11.Some computers will be tiny-perhaps we will even have computers in our clothes. 结构：w+动词原形（一般将来时） 中文：一些计算机将很小一也许我们甚至会在衣服里装有计算机。 12.They will be many times faster than today's computers,and much more powerful. 结构：will be+比较级+than+名词；much+比较级 中文：它们将比今天的计算机快很多倍，并且强大得多。 考点通关 文章句型 练习一：单项选择（共10小题） 1.The first machine with a program was designed Charles Babbage. A.as B.by C.for D.with 2.Ada Lovelace was the computer programmer. A.one B.first C.best D.last 3.The Turing machine could all kinds of calculations. A.do B.make C.take D.have 4.Early computers in the 1940s were the of a room. A.color B.shape C.size D.weight 5. the microchip,computers got smaller and faster. A.Because B.Thanks to C.Instead of D.According to 6.The first PC was designed for the public in 1981. A.special B.general C.old D.young 7.Smartphones can connect the internet. A.to B.with C.for D.at 8.The word 'download"has become part of our lives. A.daily B.every day C.everyday D.every 9.Some computers will be tiny- we will have computers in our clothes. A.perhaps B.probably C.maybe D.All of the above 10.Quantum computers will be much powerful than today's computers. A.more B.much C.many D.very 练习二：完成句子（根据中文提示，每空一词，共10小题） 1.计算机是任何可以用指令编程的机器。 A computer is any machine can be programmed a set of instructions. 2第一台带程序的机器是由查尔斯巴贝奇和他学生设计的。 The first machine a program was designed Charles Babbage and his student. 3埃达意识到计算机程序可以做更多事情。 Ada realized a computer program do a lot more. 4.图灵机可以做各种计算。 The Turing machine could do of calculations. 5.早期计算机有房间那么大。 Early computers were the a room. 6.多亏了微芯片，计算机变得更小更快。 the microchip, computers got smaller and faster 7今天的智能手机可以连接互联网。 Today's smartphones can the internet. 8.智能手机的到峡开启了数字技术的新时代。 The arrival of smartphones has a new in digital technology 9未来的计算机将比今天的快很多倍。 Future computers will be many faster today's computers. 10.也许我们会在衣服里装有计算机。 Perhaps we will computers our clothes. 练习三：翻译句子（每空填完整英文句子，共8小题） 1.第一台带程序的机器是1837年设计的。 2.图灵机也能运行不同的程序。 3.早期计算机有房间那么大。 4这是一个重大突破。 5.专家们不相信有人想要家用电脑。 6.今天的智能手机可以运行各种应用程序。 7."下载”这个词已经成为我们日常生活的一部分。 8.量子计算机将更加强大。 参考答案 1.B 2.B 3.A 4.c 5.B 练习一：单项选择 6.B 7.A 8.A 9.D 10.A 1.that;with;2.with;by,3.that;could;4.all;kinds;5.size;of; 练习二：完成句子 6.Thanks;to;7.connect;to;8.started;era;9.times;than; 10.have;in 1.The first machine with a program was designed in 1837.; 2.The Turing machine could also run different programs.; 3.Early computers were the size of a room.;4.This was a 练习三：翻译句子 major breakthrough.;5.Experts didn't believe that anybody wanted a computer at home.;6.Today's smartphones can run all kinds of apps.;7.The word "download"has become part of our daily lives.;8.Quantum computers will be much more powerful. A教材同步单元练习 一、阅读理解 A篇 Computers have changed our lives greatly.Read the timeline and answer the questions. The Story of the Computer 1837-In Britain,the first machine with a program was designed by Charles Babbage and his student Ada Lovelace.Charles wanted a machine to add up big numbers,but Ada realized that a computer program could do a lot more.She was the first computer programmer. 1936-British scientist Alan Turing read Ada's ideas and created the Turing machine, the basic design of a computer system.The Turing machine could do all kinds of calculations,and it could also run different programs.This is the basis for all modern computers. 1940s-Scientists built early computers in England and Germany.They were the size of a room! 1971-Ted Hoff was the main inventor of the microprocessor,or "microchip".This was a major breakthrough.Thanks to the microchip,computers and other electronic devices got faster and smaller very quickly. 1981-A US company designed the first PC(personal computer)for the general public. Experts didn't believe that anybody wanted a computer at home.But in two years they sold thousands of them. 1990s-present-Smartphones arrived!Today's smartphones can connect to the internet and run all kinds of different apps.The arrival of smartphones has started a new era in digital technology. The future-Scientists believe that quantum computers will be the next big breakthrough.They will be many times faster than today's computers,and much more powerful. ()1.Who was the first computer programmer? A.Charles Babbage B.Alan Turing C.Ada Lovelace D.Ted Hoff ()2.What was the major breakthrough in 1971? A.The first PC B.The Turing machine C.The microprocessor D.The smartphone ()3.What does the underlined word "They"in Paragraph 4 refer to? A.Scientists B.Early computers C.Electronic devices D.Microchips ()4.What does the writer think of quantum computers? A.They are already in use. B.They will be very powerful. C.They are the same as today's computers. D.They will be much smaller than smartphones. ()5.What is the passage mainly about? A.How to use computers B.The history of computers C.Different kinds of computers D.The future of technology B篇 Digital technology has brought big changes to our daily lives.But how does it affect our social life?Let's look at some research findings Positive effects: Social media helps us keep in touch with friends far away.We can send messages, share photos,and make video calls anytime.A study shows that 78%of teenagers feel more connected to their friends because of social media. Negative effects: However,too much screen time can be harmful.Many people spend hours on their mobile phones instead of talking to family members face to face.Some teenagers say they feel lonely even when they are online.In one survey,45%of young people reported that digital devices sometimes get in the way of their real-life relationships. Expert opinions: Dr.Lisa Brown,a psychologist,says,"Digital tools are wonderful,but we need to use them wisely.It's important to have a balanced life-spend time online,but also meet friends in person.Try to have 'no-phone'time during family meals. A breakthrough in research: A new study from Oxford University shows that taking a short break from digital devices can improve our mood.Researchers asked 100 people to stop using social media for one week.The result?67%of them felt happier and less stressed.This is a major finding for people who worry about the negative effects of technology ()1.What positive effect does social media have according to the passage? A.It helps people save time. B.It connects people far away. C.It makes people more popular. D.It teaches people new skills. ()2.What problem do 45%of young people have? A.They don't have mobile phones. B.They feel lonely when they are online. C.Digital devices affect their real-life relationships. D.They spend too little time on social media. ()3.What does Dr.Lisa Brown advise? A.Stop using digital devices completely. B.Use digital tools more often. C.Have a balanced life with and without screens. D.Never meet friends in person. ()4.What did the Oxford University study find? A.67%of people use social media every day B.Taking a break from devices made people happier. C.100 people stopped using phones for one month. D.Digital devices have no negative effects. ()5.What is the best title for this passage? A.The History of Digital Technology B.How to Use Smartphones Wisely C.The Good and Bad of Digital Life D.A Breakthrough in Oxford University 二、完形填空 Do you know how the Internet has 1.our lives?Let me tell you a story about my grandfather. My grandfather is 75 years old.He 2. in a small village all his life.Last year,I gave him a mobile phone as a gift.At first,he didn't know how to use it.He said,"I'm too old to learn these digital 3. But I didn't give up.I 4. him step by step.First,I taught him how to make a phone call.Then,I showed him how to send a 5..To my surprise,he learned very quickly. Soon,my grandfather discovered the power of social 6. He joined a group of old friends and they 7.every day."It's like we are together again!"he said happily. However,there was also a 8. side.My grandfather began to spend too much time 9. his phone.He stayed up late watching videos.My mother worried about his health.She said,"Dad,you need to take a 10.from the screen sometimes." My grandfather 11. his mistake.Now he has a better schedule.He uses the phone for one hour in the morning and one hour in the evening.He also meets his friends 12. at the park. In my 13. digital technology is a wonderful thing if we use it 14. It can bring us closer,but we should not forget to enjoy 15.life without screens. A.changed B.change C.changes D.changing A.live B.lived C.lives D.living A.tool B.tools C.tool's D.tools' A.teach B.teaches C.taught D.teaching A.message B.messages C.message's D.messaging A.media B.medium C.medias D.medias' A.chat B.chatted C.chatting D.chats A.positive B.negative C.positive's D.negative's A.in B.on C.at D.with A.break B.breaks C.broke D.broken A.realize B.realizes C.realized D.realizing A.person B.personal C.in person D.persons A.opinion B.opinions C.opinion's D.opinions A.wise B.wiser C.wisest D.wisely A.real B.really C.reality D.realize 三、阅读短文回答问题 A boy named Tim always felt lonely.He had few friends because he spent most of his time playing computer games.His parents tried to help him,but he refused to listen. One day,Tim's class had a project about "Digital Lives".The teacher asked everyone to interview an old person about life before the Internet. Tim visited his grandmother.She showed him old photos and told him stories."When I was young,"Grandma said,"we didn't have mobile phones.We visited friends in person.We played games outside.Life was simple but happy." Tim was surprised.He realized that he had missed many wonderful things.He decided to make a change.First,he set a time limit for playing games.Then,he started to play basketball with his classmates.Gradually,he made more friends. Now Tim has a balanced life.He still enjoys digital technology,but he also spends time with people face to face.He agrees with his grandmother:"Technology is a tool,not a master." 1.Why did Tim feel lonely at first? 2.What did Tim's teacher ask the students to do for the project? 3.What did Grandma say about her life before the Internet? 4.What did Tim do to change his life?(List one thing) 5.What does Tim think of technology now? 四、短文填空 用方框中所给单词的适当形式填空，使短文完整正确。（每个单词限用一次，每空限填一个单 词。) connect effect social positive negative major treat opinion smooth breakthrough person company message wait digital Hello,everyone!Today I want to share my 1. on digital technology. I think the invention of smartphones is a 2. breakthrough in history.It has brought big changes to our lives.We can 3. to the Internet anytime.We can send 4.to our friends in seconds.5.media helps us keep in 6. with people far away. However,there are also 7.effects.Some people spend too much time on their 8.devices.They forget to meet friends 9..They 10. for hours just to watch videos.This has a bad 11.on their health. My 12. is that we need to find a balance.The best 13. for too much screen time is to take breaks.If we use technology 14.,everything will go 15. Remember:technology should be our tool,not our master! 1. 2. 3. 4 5. 7. 8. 9. 10. 11. 12. 13. 14 15. 五、写作 话题：The Influence of Technology on My Life 提示： 1.What digital devices do you use every day? 2.How do they help you in your study or daily life? 3.What problems can they cause? 4.What is your opinion on using technology? 要求： 1.内容包括所有提示要点，可适当发挥。 2.80词左右，语句通顺，语法正确。 3. Kane Jeindwo e pue auoyd ews e asn I'j!w u!ajo quejodw!ue sejd A6ojouypal In my opinion,technology is a useful tool,but we should use it wisely.We need to find a 善品条辛 一、 阅读理 解 二、完形填 空 1.A;2.B;3.B;4.C;5.A;6.A;7.B;8.B;9.B;10.A;11.C;12.C 1.Because he spent most of his time playing computer games. 2.The teacher asked them to interview an old person about life before the Inte 三、阅读短 文回答问题 3.She said life was simple but happy. 4.He set a time limit for playing games./He started to play basketball with his 5.He thinks technology is a tool,not a master. 四、短文填 空 1.opinion 2.major 3.connect 4.messages 5.Social 6.company 7.negative 8.digi 五、写作 My Opinion on Technology However,technology can cause problems.Sometimes I spend too much time on my phc