Unit 3 Our digital lives单元重点易错专项训练2026-2027学年沪教版八年级英语上册

**基本信息** 紧扣2024沪教版教材，聚焦9大核心考点，通过“易错点提示+分层训练”构建系统性方法体系，逻辑覆盖语法概念、短语应用及综合运用，助力语言能力与思维品质提升。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |9大考点（现在完成时等）|每考点9题（基础/提升/拓展各3题）|易错点精准提示（如现在完成时标志词用法、被动语态“be+过去分词”时态变化等）|从基础语法（时态/语态）到短语应用（bring to等）再到词性转换的递进链条|

沪教版（2026）八年级上册 Unit 3 Our digital lives 单元重点易错专项训练 沪教版（新版）八年级上册 Unit 3 Our digital lives 单元重点易错专项训练 紧扣最新教材（2024沪教版） | 9大考点 | 81道精选题 姓名：__________ 班级：__________ 得分：__________ 考点一：现在完成时（have/has done）—— 标志词 already/yet/ever/never/for/since ⚠ 易错点：have/has + 过去分词。already（肯定句句中）；yet（否定/疑问句末）；ever/never与完成时连用。for+段时间/since+点。 ⚠ 否定：has never done；疑问：Have you ever...? 不能与具体过去时间连用（如yesterday/last year）。since引导从句用一般过去时。 ▷ 基础题（选择题） ▷（ ）1. Jam ______ already finished his online science project. A. have B. has C. is D. was ▷（ ）2. — Have you ever studied online? — No, I ______. A. haven't B. didn't C. don't D. won't ▷（ ）3. Chen Wu has lived in Jinan ______ 2018. He knows the city well. A. for B. since C. from D. in ◇ 提升题（选择题） ◇（ ）1. Lily has ______ heard of the new app, so she wants to try it. A. ever B. never C. already D. yet ◇（ ）2. The students ______ their digital devices for over two years now. A. used B. have used C. are using D. were using ◇（ ）3. ______ you ever ______ with your friends on social media? A. Do; chat B. Did; chat C. Have; chatted D. Are; chatting ★ 拓展题（用适当形式填空） ★ 1. Zhang Hui ________ (not finish) his online homework yet. He is still working. ★ 2. How long ________ you ________ (have) this laptop? — Since last September. ★ 3. Lily has just ________ (download) a useful app for learning English. 考点二：被动语态（一般现在时/一般过去时/一般将来时/现在完成时被动） ⚠ 易错点：被动 = be + 过去分词。am/is/are done（现在）；was/were done（过去）；will be done（将来）；has/have been done（完成） ⚠ by+执行者可省略。The Internet was invented in the 1960s. Thousands of apps are downloaded every day. It can't be true! ▷ 基础题（选择题） ▷（ ）1. Smartphones ______ widely used in our daily lives nowadays. A. is B. are C. was D. were ▷（ ）2. The first computer ______ invented in the 1940s. A. is B. are C. was D. were ▷（ ）3. The new app ______ by millions of users since it came out. A. has been used B. is used C. was used D. will be used ◇ 提升题（选择题） ◇（ ）1. In the future, all the rubbish bins ______ connected to the internet. A. is B. are C. will be D. were ◇（ ）2. Personal information must ______ safe when we use social media. A. keep B. be kept C. is kept D. was kept ◇（ ）3. The smart home system ______ by a company in Kunming last year. A. is designed B. was designed C. has been designed D. will be designed ★ 拓展题（用适当形式填空） ★ 1. The Internet ________ (invent) in the late 1960s. It changed the world. ★ 2. Mobile payment ________ (use) by more and more people in China now. ★ 3. The message ________ (send) to all the students tomorrow morning. 考点三：形容词比较级与最高级（构成规则 + than / the + 最高级 + in/of） ⚠ 易错点：单音节+er/est：tall→taller→tallest。辅音+y→i+er：heavy→heavier。多音节前加more/most：more convenient。 ⚠ 比较级+than（I am taller than you）；最高级+the...in/of（the most popular app in China）。much/a little修饰比较级。 ▷ 基础题（选择题） ▷（ ）1. Online shopping is ______ than going to the store. It saves time. A. convenient B. more convenient C. most convenient D. the most convenient ▷（ ）2. This app is one of ______ apps for learning English. A. popular B. more popular C. the most popular D. popularest ▷（ ）3. My new laptop is ______ than my old one. It runs much faster. A. light B. lighter C. lightest D. the lightest ◇ 提升题（选择题） ◇（ ）1. The Internet has made communication ______ than it was 20 years ago. A. much easier B. more easier C. much more easy D. the easiest ◇（ ）2. WeChat is ______ app in China. Almost everyone uses it every day. A. widely used B. the most widely used C. more widely used D. most widely used ◇（ ）3. Smartphones are getting ______ and ______. They can do almost everything now. A. smart; smart B. smarter; smarter C. more smart; more smart D. the smartest; the smartest ★ 拓展题（用适当形式填空） ★ 1. Digital technology has made our lives ________ (easy) than before. ★ 2. This is ________ (good) app I have ever used for studying maths. ★ 3. The more you practise, the ________ (good) you will become at typing. 考点四：重点短语 —— bring...to / connect to / warn sb about / allow sb to do / lead to ⚠ 易错点：bring big changes to = 给……带来大变化；connect to = 连接到；warn sb about sth = 警告某人注意某事 ⚠ allow sb to do = 允许某人做；lead to = 导致（to是介词+名词/doing）；take...for example = 以……为例；according to = 根据 ▷ 基础题（选择题） ▷（ ）1. The Internet has brought big changes ______ our everyday lives. A. in B. to C. for D. with ▷（ ）2. Parents should warn their children ______ spending too much time online. A. about B. of C. for D. both A and B ▷（ ）3. The smart system allows users ______ the lights from their phones. A. control B. to control C. controlling D. controlled ◇ 提升题（选择题） ◇（ ）1. Spending too much time on screens can ______ health problems. A. lead to B. lead for C. lead in D. lead with ◇（ ）2. ______ the report, more than 70% of teenagers use social media every day. A. According to B. According with C. According for D. According in ◇（ ）3. Take smart homes ______ example. They can save a lot of energy for us. A. for B. as C. to D. with ★ 拓展题（用适当形式填空） ★ 1. Please connect the printer ________ (to/with) the computer before you start. ★ 2. The app warns users about ________ (share) personal information online. ★ 3. Thanks to the Internet, people can communicate with each other ________ (easy) than before. 考点五：情态动词 should/must/can/could 表建议、义务、能力 ⚠ 易错点：should（应该/建议）= You should take breaks；must（必须/禁止）= You must keep your password secret ⚠ can/could（能/可以）= We can learn a lot online；mustn't（禁止）= You mustn't share your password. 否定回答must问句用needn't/don't have to ▷ 基础题（选择题） ▷（ ）1. You ______ take breaks every hour when using digital devices. A. should B. must C. can D. will ▷（ ）2. You ______ tell anyone your password. It's dangerous. A. shouldn't B. mustn't C. couldn't D. wouldn't ▷（ ）3. We ______ search for information online very quickly nowadays. A. should B. must C. can D. need ◇ 提升题（选择题） ◇（ ）1. — Must I delete that strange message now? — No, you ______. A. mustn't B. needn't C. can't D. shouldn't ◇（ ）2. Students ______ be careful about what they post on social media. A. can B. could C. should D. may ◇（ ）3. ______ you please show me how to download this app, Chen Wu? A. Should B. Must C. Could D. Would ★ 拓展题（用适当形式填空） ★ 1. You ________ (should/must) keep your personal information safe online. ★ 2. Lily ________ (can) use a computer when she was only five years old. ★ 3. We ________ (should) spend too much time playing online games. It's bad for us. 考点六：spend...on / stay in touch with / run out of / be full of / go wrong ⚠ 易错点：spend + 时间 + on sth / spend + 时间 + doing；stay in touch with = 与……保持联系（不是stay touch） ⚠ run out of = 用完/耗尽（主语是人）；go wrong = 出故障/出问题；be full of = 充满（= be filled with）；look after = 照顾 ▷ 基础题（选择题） ▷（ ）1. Jam spends two hours ______ his homework on the computer every day. A. on B. in C. at D. for ▷（ ）2. We should stay ______ touch ______ our friends even when we are busy. A. in; with B. on; with C. at; for D. with; to ▷（ ）3. My phone is ______ of power. I need to charge it right now. A. run B. ran C. running D. runs ◇ 提升题（选择题） ◇（ ）1. Something has ______ with my laptop. It won't turn on. A. gone wrong B. gone bad C. gone out D. gone off ◇（ ）2. The smart rubbish bin is ______ of sensors that can sort waste automatically. A. full B. filled C. both A and B D. fill ◇（ ）3. We have ______ all our data. We need to buy more storage space. A. run out B. run out of C. used up of D. run off ★ 拓展题（用适当形式填空） ★ 1. Lily spends too much time ________ (play) online games. Her mum is worried. ★ 2. Zhang Hui looks after his grandfather ________ (good) when he is ill. ★ 3. The battery has run ________ (out/of) already. Please plug it in. 考点七：the number of vs a number of & thanks to / after all / on the other hand ⚠ 易错点：the number of + 复数名词（……的数量），谓语用单数：The number of users is growing. a number of = many，谓语用复数 ⚠ thanks to = 多亏了/由于（正面）；after all = 毕竟/终究；on the other hand = 另一方面（表转折对比） ▷ 基础题（选择题） ▷（ ）1. The number of people using mobile payment ______ increasing every year. A. are B. is C. were D. have been ▷（ ）2. A number of students ______ addicted to online games. We should help them. A. is B. was C. are D. has been ▷（ ）3. ______ the Internet, we can study at home when schools are closed. A. Thanks to B. Thanks for C. Because D. Since ◇ 提升题（选择题） ◇（ ）1. Online shopping is convenient. ______, it also has some problems. A. However B. On the other hand C. After all D. For example ◇（ ）2. Don't be too hard on him. ______, he is only a beginner at coding. A. After all B. At all C. In all D. Above all ◇（ ）3. ______ the data from the smart sensors, the company can plan better routes. A. According to B. Thanks to C. Because D. Both A and B ★ 拓展题（用适当形式填空） ★ 1. The number of digital devices in our home ________ (be) growing fast. ★ 2. ________ (thanks/thanks to) your help, I finally learned how to code. ★ 3. A number of new apps ________ (be) designed for online learning this year. 考点八：词性转换 —— pay→payment / warn→warning / treat→treatment / smooth→smoothly ⚠ 易错点：动词→名词：pay(v.)→payment(n.)；warn(v.)→warning(n.)；treat(v.)→treatment(n.)；weigh(v.)→weight(n.) ⚠ 形容词→副词：smooth(adj.)→smoothly(adv.)；形容词→名词：social(adj.)→society(n.)；basic(adj.)→basis(n.) ▷ 基础题（选择题） ▷（ ）1. Mobile ______ makes shopping much easier than before. A. pay B. pays C. payment D. paying ▷（ ）2. The doctor gave the patient some special ______ for his illness. A. treat B. treats C. treatment D. treating ▷（ ）3. Cars can now drive ______ on the smart roads in the future city. A. smooth B. smoother C. smoothly D. smoothest ◇ 提升题（选择题） ◇（ ）1. The weather ______ says there will be heavy rain in Kunming tomorrow. A. warn B. warning C. warns D. warned ◇（ ）2. We should pay attention to our ______ when using digital devices too long. A. weigh B. weight C. heavy D. heavily ◇（ ）3. Social media plays an important role in modern ______. A. social B. society C. sociable D. socially ★ 拓展题（用适当形式填空） ★ 1. The ________ (interview) asked Chen Wu many questions about his digital habits. ★ 2. This new software has a ________ (basis) function of protecting your privacy. ★ 3. The teacher gave us a ________ (warn) about the dangers of cyberbullying. 考点九：continue to do / start doing / communicate with / have an effect on / deal with ⚠ 易错点：continue to do = 继续做（另一件事）；continue doing = 继续做（同一件事）。start to do = start doing（同义） ⚠ communicate with sb = 与某人交流；have a positive/negative effect on = 对……有积极/消极影响；deal with = 处理/应对 ▷ 基础题（选择题） ▷（ ）1. The teacher continued ______ the lesson after the fire drill. A. teach B. to teach C. taught D. teaches ▷（ ）2. We can communicate ______ our friends online anytime, anywhere. A. with B. to C. for D. at ▷（ ）3. Spending too much time online can have a bad ______ on your study. A. affect B. effect C. effort D. offer ◇ 提升题（选择题） ◇（ ）1. How do you ______ with the problem when your computer crashes? A. deal B. do C. make D. take ◇（ ）2. Jam started ______ coding when he was only ten years old. A. learn B. to learn C. learned D. both A and B ◇（ ）3. The Internet has had a huge effect ______ the way we live and work. A. on B. in C. at D. for ★ 拓展题（用适当形式填空） ★ 1. Lily continued ________ (practise) the piano even after she got tired. ★ 2. Social media can have a positive effect on ________ (build) friendships. ★ 3. Chen Wu wants to learn how to ________ (deal) with computer problems by himself. 参考答案与详细解析 考点一：现在完成时（have/has done） 【基础题】 1. B Jam三单+already→has finished。Jam已经完成了在线科学项目。 2. A Have you...? 否定回答 No, I haven't. 现在完成时否定。 3. B since + 过去时间点（2018）。Chen Wu从2018年起住在济南。 【提升题】 1. C already（肯定句句中）。Lily已经听说过这个新app想试试。 2. B for over two years + now → 现在完成时have used。已用了两年多。 3. C Have you ever chatted...? ever与现在完成时连用。在社交媒体聊过天吗？ 【拓展题】 1. hasn't finished yet提示现在完成时否定。Zhang Hui还没完成在线作业。 2. have; had How long + 现在完成时。你有这台笔记本多久了？ 3. downloaded has just downloaded。just与现在完成时连用。刚下载了app。 考点二：被动语态（一般现在/过去/将来/完成被动） 【基础题】 1. B smartphones复数 + are used。现在被动。智能手机被广泛使用。 2. C the first computer单数 + was invented。过去被动。第一台电脑在40年代发明。 3. A since it came out → 现在完成时被动 has been used。已被数百万人使用。 【提升题】 1. C in the future → 一般将来时被动 will be connected。未来所有垃圾桶将联网。 2. B must + be kept。情态动词被动。使用社交媒体时个人信息必须被保护。 3. B last year → 一般过去时被动 was designed。去年由昆明公司设计。 【拓展题】 1. was invented 一般过去时被动。互联网在20世纪60年代末被发明。 2. is used 一般现在时被动。移动支付现在被越来越多的人使用。 3. will be sent 一般将来时被动。消息明天早上将发送给所有学生。 考点三：形容词比较级与最高级 【基础题】 1. B more convenient（多音节比较级）。网购比去商店更方便。 2. C one of + the most popular。最流行的app之一。最高级+the most。 3. B lighter（比较级+than）。新笔记本比旧的光。light→lighter。 【提升题】 1. A much easier（much修饰比较级）。互联网使交流比20年前容易得多。 2. B the most widely used（最高级）。微信是中国最广泛使用的app。 3. B smarter and smarter（比较级+and+比较级）。越来越智能。 【拓展题】 1. easier than before提示比较级。数字技术让生活比以前更容易。 2. the best 最高级 the best app。这是我用过的最好的学数学app。 3. better the more...the better。练习越多打字越好。比较级。 考点四：重点短语 bring...to / connect to / warn about / allow to do / lead to 【基础题】 1. B bring changes to = 给……带来变化。互联网给日常生活带来大变化。 2. D warn sb about/of = 警告某人注意。两个都可以。提醒孩子别花太多时间上网。 3. B allow sb to do = 允许某人做。智能系统允许用户用手机控制灯。 【提升题】 1. A lead to = 导致（to是介词）。花太多屏幕时间会导致健康问题。 2. A According to = 根据。根据报告超过70%青少年每天用社交媒体。 3. A take...for example = 以……为例。以智能家居为例。 【拓展题】 1. to connect...to... = 把……连接到……。请先把打印机连到电脑。 2. sharing warn sb about doing。警告用户不要在网上分享个人信息。 3. more easily easily的比较级。人们能比以前更容易地交流。 考点五：情态动词 should/must/can/could 【基础题】 1. A should（建议）= 应该。使用数字设备时应每小时休息一下。 2. B mustn't（禁止）= 不许。你不能告诉任何人密码。很危险。 3. C can（能力）= 能。我们现在能很快在网上搜索信息。 【提升题】 1. B Must I...? 否定回答 No, you needn't. 不必。我必须现在删掉那条消息吗？ 2. C should（建议）。学生应该小心在社交媒体上发布的内容。 3. C Could you please...? = 你能……吗？（礼貌请求）。你能教我下载app吗？ 【拓展题】 1. must must keep = 必须保持。你必须保护好自己的个人信息。 2. could could use（过去能力）。Lily五岁时就能用电脑了。 3. shouldn't shouldn't spend = 不应该花。我们不应该花太多时间玩网游。 考点六：spend...on / stay in touch with / run out of / be full of / go wrong 【基础题】 1. A spend + 时间 + on sth。Jam每天花两小时在电脑上做作业。 2. A stay in touch with = 与……保持联系。即使忙也要和朋友保持联系。 3. C run out of = 用完。手机没电了需要充电。has run out of。 【提升题】 1. A go wrong = 出故障/出问题。我的笔记本出问题了开不了机。 2. C be full of = be filled with（两者都对）。垃圾桶装满了自动分类的传感器。 3. B run out of = 用完。我们用完了所有数据需要买更多存储空间。 【拓展题】 1. playing spend + 时间 + doing。Lily花太多时间玩网游。 2. well look after...well。Zhang Hui在爷爷生病时照顾得很好。 3. out run out = 用完（不及物，不加of）。电池已经用完了请插电。 考点七：the number of vs a number of & thanks to / after all / on the other hand 【基础题】 1. B the number of + 复数 → 单数谓语is。使用移动支付的人数每年增长。 2. C a number of = many → 复数谓语are。许多学生对网游上瘾。 3. A Thanks to = 多亏了。多亏互联网我们能在家学习。 【提升题】 1. B On the other hand = 另一方面（表转折对比）。网购方便，另一方面也有问题。 2. A After all = 毕竟。别对他太苛刻，毕竟他只是个编程初学者。 3. D According to（根据数据）+ Thanks to（由于数据帮助）都通顺。选D。 【拓展题】 1. is the number of + 复数 → 单数is。数字设备数量在快速增长。 2. Thanks Thanks to your help。多亏你的帮助我终于学会了编程。 3. are A number of + 复数 → 复数are。许多新app今年被设计用于在线学习。 考点八：词性转换 pay→payment / warn→warning / treat→treatment / smooth→smoothly 【基础题】 1. C payment（n.支付）。移动支付让购物比以前容易多了。 2. C treatment（n.治疗/疗法）。医生给了病人一些特殊治疗。 3. C smoothly（adv.平稳地）。修饰drive用副词smoothly。 【提升题】 1. B warning（n.预报/警告）。天气预报说明天昆明有大雨。 2. B weight（n.体重）。长时间用数字设备要注意我们的体重。 3. B society（n.社会）。社交媒体在现代社会扮演重要角色。 【拓展题】 1. interviewer interviewer（n.采访者）。采访者问了Chen Wu许多关于数字习惯的问题。 2. basic basic（adj.基本的）。这个软件有保护隐私的基本功能。 3. warning give sb a warning。老师给了我们一个关于网络欺凌危险的警告。 考点九：continue to do / start doing / communicate with / have an effect on / deal with 【基础题】 1. B continue to do = 继续做。消防演习后老师继续上课。 2. A communicate with sb = 与某人交流。可以随时和朋友在线交流。 3. B have a bad effect on = 对……有坏影响。花太多时间上网影响学习。 【提升题】 1. A deal with = 处理。电脑崩溃时你怎么处理这个问题？ 2. D start to do = start doing（同义）。Jam十岁开始学编程。两个都对。 3. A have an effect on = 对……有影响。对我们的生活和工作方式有很大影响。 【拓展题】 1. practising continue doing = 继续做同一件事。Lily即使累了也继续练琴。 2. building have an effect on doing。社交媒体对建立友谊有积极影响。 3. deal how to deal with。Chen Wu想学会自己处理电脑问题。 — — 学科网（北京）股份有限公司 $