Unit 8 Let's Communicate!（下）-2026-2027学年八年级英语上册知识点精讲（人教版）

Unit 8 Let's Communicate! 知识点精讲（下） 。单元核心词汇 continue impolite attention reasonable trust;social take place benefit reply honor 。单元同步语法 第一条件句 。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.continue/kan't虹nju:/v.继续；持续 词形变化：continued(过去式/过去分词)；continuing(现在分词)；continuous(adj. 连续不断的) 搭配：continue doing sth.继续做某事；continue to do sth.继续去做某事 例佝：Let's continue our class.我们继续上课吧。 2.mpolite/,Impe'lart/adj.不礼貌的；粗鲁的 词形变化：impolitely(acv.不礼貌地)；politeness(n.礼貌) 反义词：polite(adj.有礼貌的) 例句：It's impolite to talk with your mouth full..嘴里含着食物说话是不礼貌的。 3.attention/e'tenfn/n.注意；关注 词形变化：attentive(adj.专心的)；attentively(adv.专心地) 搭配：pay attention to注意.…(to为介词) 例佝：Please pay attention to your teacher.请注意听老师讲课。 4.reasonable/'ri:znebl//adj.合理的；公平的；明智的 词形变化：reasonably(adv.合理地)；reason(n.理由；v.推理) 搭配：a reasonable price合理的价格 例佝：Your idea sounds reasonable.你的想法听起来很合理。 5.trust /trAst/v.相信；信任；信赖n.信任；信赖 词形变化：trusted(过去式/过去分词)；trusting(现在分词)；trustworthy(adj.值得 信赖的) 搭配：trust sb..信任某人；have trust in对.有信心 例句：I trust you completely..我完全相信你。 6.socia间/'sy/adj.社会的；社交的 词形变化：society(n.社会)；socially(adv.社交上) 搭配：social media社交媒体；social life社交生活 例句：Ne should take part in social activities.我们应该参加社会活动。 7.take place/terk pleIs/短语.发生；举行 辨析：take place通常指有计划地发生；happen指偶然发生 例句：The sports meeting will take place next week.运动会将在下周举行。 8.benefit/'benifrt/v.有益于；得益n.利益；好处 词形变化：benefited(过去式/过去分词)；benefiting(现在分词)；beneficial(ad.有 益的) 搭配：benefit from从.中获益；for the benefit of为了的利谥 例佝：Ne can benefit from reading.我们能从阅读中获益。 9.『eply /m'pla/v.回答；答复n.回答；答复 词形变化：replied(过去式/过去分词)；replying(现在分词) 搭配：reply to回答.…（等于answer）. 例佝：Please reply to my letter..请给我回信。 10.honor/pne(r)ln.荣誉；荣幸v.尊敬；给予荣誉 词形变化：honorable(adj.可敬的)；honored(adj.受尊敬的)；in honor of为了纪 念… 搭配：lt's an honor to do sth.做某事很荣幸 例句：lt's an honor to meet you.很荣幸见到您。 考点通关 单元词汇 (一)单句填空 (用所给词的适当形式填空) 1.The teacher asked us (continue)reading the story 2.It's (polite)to laugh at others.You should say sorry. 3.You must pay (attend)to the traffic lights when crossing the street. 4.I think his suggestion is (reason).Let's do it. 5.You can (trust)him because he is honest. 6.We should learn some (society)skills for the future. 7.The concert will (take place)in the stadium next Friday. 8.Taking exercise_ (benefit)your health a lot. 9.She didn't (reply)to my question. 10.It's a great (honorable)to win the first prize 11.We need (continue)working hard to succeed. 12.He was (impolite)to his parents yesterday. (二)短文填空 Dear friends, We should always be polite to others.It is 1. to interrupt someone while they are speaking.We need to pay 2. to what others say.If you have different ideas,you can 3. to them in a 4. way.Building 5. relationship helps you make more friends.And you can 6. from helping others.Remember,good manners 7._ in our daily life.If you 8. the people around you,they will also trust you.It is an 9 to be a kind person.Let's 10. to spread kindness! Yours, Li Ming 参考答案 1.to continue;2.impolite;3.attention;4.reasonable;5.trust;6.social; (一)单句填空 7.take place;8.benefits;9.reply;10.honor;11.to continue;12.impolite 1.impolite;2.attention;3.reply;4.reasonable;5.social;6.benefit;7.take (二)短文填空 place;8.trust;9.honor;10.continue 教材同步语法全解全练 重点2 单元语法 第一条件句(f条件句) 表示"如果…，就会.”的条件与结果关 定义 系，用于谈论可能发生或真实的情况。 If+主语+动词一般现在时，主语+wil+ 核心结构 动词原形 主将从现（主句用一般将来时，从句用一般 简称 现在时) 1.If it rains,I will stay at home. 例句 2.If you study hard,you will pass the exam. ①f从句可放在句首或句尾，放在句首时用 逗号隔开。 注意点 ②从句中的动词用第三人称单数时需加-s/ es。 ③主句也可用祈使句或情态动词（如can, may),但初中重点掌握will。 X If he will come,I will tell you..(从句不 常见错误 用将来时) If he comes,I will tell you. 考点通关 单元语法 语法专练一：第一条件句（选择题） (8小题) 1.Ifit tomorrow,we will go to the park. A.doesn't rain B.won't rain C.didn't rain 2.You will be late you get up early. A.if B.unless C.because 3.If she hard,she will get good grades. A.works B.will work C.worked 4.1 will call you if I any news. A.get B.will get C.got 5.If there a meeting,I will not come. A.is B.will be C.was 6. you exercise every day,you will keep healthy. A.If B.Unless C.But 7.If he to the party,I will be happy A.comes B.came C.will come 8.We will go swimming if it hot this weekend. A.is B.will be C.was 语法专练二：第一条件句（语法填空） (10小题) 用所给动词的适当形式填空。 1.If you (heat)ice,it (turn)into water. 2.She (not go)to the zoo if it (rain)tomorrow. 3.If Tom (finish)his homework,he (watch)TV. 4.What you (do)if you (have)a lot of money? 5.If we (not hurry),we (miss)the bus. 6.They (play)football if the weather (be)fine. 7.If1 (see)him,I (tell)him the truth. 8. you (help)me if I (need)help? 9.If the baby (cry),I (pick)him up 10.We (have)a picnic if it (not be)windy. 语法专练一：选择题 1.A;2.B;3.A;4A;5.A;6.A;7.A;8.A 1.heat;turns;2.will not go;rains;3.finishes;will watch; 4.will;do;have;5.don't hurry;will miss;6.will play;is; 语法专练二：语法填空 7.see;will tell;8.Will;help;need;9.cries;will pick;10. will have;isn't 教材同步文章句型精讲 重点3 文章精讲 1.No matter whether you like it or not,social media is becoming a big part of many teenagers'lives. 结构：No matter whether..or not+主句（让步状语从句） 短语：a big part of...的重要部分 译：无论你喜欢与否，社交媒体正成为许多青少年生活的重要部分。 2.Social media allows people to connect with friends,share experiences,and stay on trend. 结构：allow sb.to do sth.允许某人做某事 短语：connect with..与..联系；stay on trend紧跟潮流 译：社交媒体让人们联系朋友、分享经历并紧跟潮流。 3.It is important to stay safe while having fun online. 结构：tis+形容词+to do sth.做某事是.的 短语：stay safe保持安全；while doing sth..在做某事的同时 译：在网上玩得开心的同时保持安全是很重要的。 (4.Here are some simple tips. 结构：Here are+复数名词（倒装句） 译：这里有一些简单的建议。 (5.First,if you have accounts on different apps,make sure you use strong passwords. 结构：if引导条件状语从句；make sure+宾语从句确保… 短语：strong passwords强密码 译：首先，如果你在不同App上有账号，确保你使用强密码。 6.Avoid using easy-to-guess information,like your birthday or your pet's name. 结构：avoid doing sth.避免做某事 短语：easy-to-guess information容易猜到的信息 译：避免使用容易猜到的信息，比如你的生日或宠物名字。 7.Second,be careful when you talk to strangers online. 结构：be careful when+从句当..时要小心 短语：talk to strangers和陌生人交谈 译：其次，当你在网上和陌生人聊天时要小心。 8.Not every person online is friendly or telling the truth about themselves. 结构：not every+名词（部分否定）并非每个.都.… 短语：tell the truth说实话 译：并非每个网上的人都友好或说真话。 9.Don't share personal details,like your address,school name,or phone number. 结构：Don't+动词原研形（否定祈使句） 短语：personal details个人详细信息 译：不要分享个人详细信息，比如你的地址、学校名或电话号码。 10.Third,if you want to post anything online,think it over. 结构：if条件句；think it over仔细考虑 短语：post online在网上发布 译：第三，如果你想在网上发布任何东西，仔细考虑一下。 11.Once it is out there,it is hard to know who sees it. 结构：Once+从句（一旦…就） 短语：be out there被公开；it is hard to do sth.做某事很难 译：一旦它被公开，就很难知道谁看到了它。 12.Don't talk about things you may regret. 结构：主语+may+动词原形（可能做某事） 短语：regret sth.后悔某事 译：不要谈论你可能会后悔的事情。 13.Lastly,keep your social media profiles private so only real friends can see your posts and information. 结构：keep+宾语+形容词（保持…状态）；so that引导目的状语从句（此处 so后省略that) 短语：keep.private保持..私密；real friends真正的朋友 译：最后，保持你的社交媒体资私密，这样只有真正的朋友才能看到你的帖子和信 息。 (14.Remember,by following these tips,you can stay safe on social media and the internet. 结构：by doing sth.通过做某事 短语：follow these tips遵循这些建议 译：记住，通过遵循这些建议，你可以在社交媒体和互联网上保持安全。 15.Your parents and teachers want the best for you. 结构：want sth.for sb.为某人想要某物 译：你的父母和老师希望你一切都好。 16.Be aware of the risks and protect yourself. 结构：Be aware of+名词意识到；protect yourself保护你自己 译：意识到风险并保护自己。 考点通关 文章精讲 练习一：单项选择（从A、B、C、D中选择最佳答案） 1.It is important safe online. A.stay B.to stay C.staying D.stayed 2.Social media allows people with friends. A.connect B.connecting C.to connect D.connected 3. every person online is friendly. A.Not B.No C.None D.All 4.You should avoid personal details online. A.share B.sharing C.to share D.shared 5. you post something,think it over. A.If B.Because C.Although D.Unless 6.Once it is out there,it is hard who sees it. A.know B.to know C.knowing D.knew 7.Keep your profiles A.privacy B.private C.privately D.privated 8.By these tips,you can stay safe. A.follow B.follows C.following D.followed 9.Don't talk about things you may A.regret B.regrets C.regretting D.regretted 10.Be the risks. A.aware B.aware of C.aware to D.aware with 练习二：完成句子（根据中文提示，每空一词） 1无论你喜欢与否，社交媒体正在改变我们的生活。 No matter you like it not,social media is changing our lives. 2这里有一些简单的建议。 Here some simple 3.确保你使用强密码。 Make you use passwords. 4.避免使用容易猜到的信息。 using easy- -guess information. 5.当你在网上和陌生人聊天时要小心。 Be when you to strangers online. 6.并非每个网上的人都友好。 every person online friendly. 7.不要分享个人详细信息。 share personal 8仔细考虑一下你发布的内容。 it before you post it. 9.一旦它被公开，就很难知道谁看到了它。 Once it is there,it is to know who sees it. 10.通过遵循这些建议，你何以保护自己。 following these tips,you can yourself. 练习三：翻译句子（根据中文意思完成英文句子，每空一词） 1社交媒体允许人们联系朋友并分享经历。 Social media people with friends and share experiences. 2.在网上玩得开心的同时保持安全是很重要的。 It is important to while having fun 3避免使用像你的生日这样的信息。 Avoid information your birthday. 4.不要谈论你可能会后悔的事情。 Don't talk things you may 5.保持你的社交媒体资料私密。 your social media profiles 6.这样只有真正的朋友才能看到你的帖子。 only friends can see your posts. 7你的父母和老师希望你一切都好。 Your parents and teachers the best you. 8.意识到风险并保护自己。 Be of the and protect yourself. 参考答案 1.B 2.C 3.A 4.B 5.A 练习一：单项选择 6.B 7.B 8.C 9.A 10.B 1.whether;or;2.are;tips;3.sure;strong;4.Avoid;to; 练习二：完成句子 5.careful;talk;6.Not;is;7.Don't;details;8.Think;over; 9.out;hard;10.By;protect 1.allows;to connect;2.stay safe;online;3.using;like; 练习三：翻译句子 4.about;regret;5.Keep;private;6.so;real;7.want;for; 8.aware;risks A 教材同步单元练习 一、阅读理解 A篇 Social media is a big part of many teenagers'lives.They use apps like WeChat Douyin,and QQ to talk with friends,share photos,and watch videos.However,using social media too much can cause problems. A study shows that about 30%of Chinese teenagers spend more than two hours a day on social media.Some of them feel unhappy when they see others'perfect posts. They may think their own lives are boring.This is called "social media envy".Also, staying online too long can make it hard to sleep well. But social media is not all bad.It helps teenagers keep in touch with faraway friends and learn new things.Many students use online groups to discuss homework.Some even find study partners on social media. To stay healthy,experts suggest:limit your screen time-no more than one hour of social media each day;follow positive accounts that teach you or make you laugh;talk to parents if you feel sad after using social media.Remember,what you see online is only part of the truth.Everyone has both good days and bad days. ()1.What does the underlined phrase "social media envy"mean in Paragraph 2? A.Feeling jealous when seeing others'good posts. B.Feeling happy about friends'online sharing. C.Wanting to post more photos than others. D.Thinking social media is not useful. ()2.Which of the following is NOT mentioned as a bad effect of too much social media? A.Feeling unhappy about one's own life. B.Having difficulty in sleeping. C.Losing interest in outdoor activities. D.Spending less time on homework. ()3.According to the passage,what can teenagers do to use social media wisely? 1 Follow only famous people. 2 Spend less than one hour a day on it. 3 Share every detail of their lives. 4Ask parents for help when feeling bad. A.①② B.②③ C.②④ D.③④ ()4.What is the main idea of the passage? A.Social media is harmful to all teenagers. B.Teenagers should not use social media at all. C.Social media has both advantages and disadvantages. D.The best way to use social media is to post every day. B篇 Have you ever received a strange message saying you won a prize?Or an email from "your bank"asking for your password?These are online tricks called phishing )Phishing is when bad people try to get your personal information by pretending to be someone you trust. A 14-year-old boy named Li Ming once got a message saying "Congratulations!You won a free phone!Click here to claim."He clicked the link and filled in his name, address,and phone number.The next day,his mom got a call from a "company" asking for money.Luckily,she knew it was a trick. How can you avoid phishing?Here are some rules: Rule 1:Think before you click.If an offer sounds too good to be true,it probably is. Don't click links in strange messages or emails. Rule 2:Never share passwords.A real bank or company will never ask for your password by message or email. Rule 3:Check the address.Look at the website address carefully.Fake ones often have small spelling mistakes,like "ba1du"instead of "baidu". Rule 4:Talk to an adult.If you are not sure about a message,show it to your parents or teachers.They can help you decide. Remember,being careful online is as important as being careful on the street.Protect your information,and you will stay safe. ()1.What is "phishing"according to the passage? A.A game played on social media. B.A way to make free phone calls. C.A trick to get others'personal information. D.An email from a real bank. ()2.What happened after Li Ming clicked the link? A.He got a free phone. B.His mom received a call asking for money. C.His bank account was stolen. D.He won a prize. ()3.Which of the following is a good way to avoid phishing? A.Click any link that says "Congratulations". B.Share your password with the bank through email. C.Check the website address for spelling mistakes. D.Reply to strange messages immediately. ()4.What does the writer think about online safety? A.It is not necessary for teenagers. B.It is less important than street safety. C.It is as important as being careful in real life. D.It is only important for adults. 二、完形填空 Many teenagers enjoy chatting with friends online.But do you know how to stay safe while 1.online?Here is some advice. First,never 2.your personal information with strangers.Your real name, address,school,and phone number should be kept secret.Some bad people may use this information to 3.you. Second,be careful when you receive a friend request from someone you don't know. It might 4.a fake account.If you are not sure,you can ask your parents for 5. Third,remember that not everything online is 6..Some people lie about their age or identity ()Always think 7.before you believe what others say. Fourth,if someone makes you feel 8.online,tell a trusted adult at once.You can also block(拉黑)the person and report the bad behavior(行为). Finally,spend time online 9. Take breaks often and don't forget to enjoy real- life activities.The internet is a wonderful tool,10. your safety always comes first. A.chat B.to chat C.chatting D.chatted A.share B.to share C.sharing D.shared A.help B.hurt C.teach D.thank A.is B.are C.be D.was A.information B.help C.money D.time A.true B.fun C.easy D.popular A.twice B.once C.hard D.quickly A.happy B.excited C.comfortable D.uncomfortable A.wisely B.foolishly C.sadly D.angrily A.so B.but C.or D.and 三、阅读短文回答问题 Chen Hao is a junior high school student in Beijing.He loves playing online games, especially a popular game called "Glory of Kings".Every day after school,he spends about two hours playing it.His parents worry that he spends too much time on gaming. Last month,Chen Hao found a new online friend while playing.They started chatting and soon became close.The friend,who called himself "Xiao Wang",said he was also a student.He often gave Chen Hao game tips and even bought him some expensive game equipment.Chen Hao was very happy One day,Xiao Wang asked Chen Hao to borrow his father's phone to make a call. Chen Hao agreed.But later,his father found that 500 yuan had been taken from his account.The police later found that "Xiao Wang"was actually a grown-up cheater. He used a fake identity to trick teenagers. Chen Hao felt very sorry.He realized that he should never trust strangers online easily. Now,he only plays games for one hour a day and never shares personal information with anyone online. 1.What did Chen Hao like to do after school every day? 2.How did Xiao Wang win Chen Hao's trust? 3.What did Chen Hao do when Xiao Wang asked him to borrow his father's phone? 4.How much money was taken from Chen Hao's father's account? 5.What lesson did Chen Hao learn from this experience? 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。） used advice they safe share protect bad feel take real Today,many teenagers have social media accounts.They 1. photos,videos,and thoughts online.But they need to know how to stay 2.,Here is some 3. for them. First,don't post your home address or phone number.Some people may use this information in 4. ways.Second,always be careful when you talk to strangers. Not everyone online is 5.who they say they are.Third,if you 6. unhappy about something online,tell your parents.They can help 7.you. Some teenagers 8. to share too much because they want attention.But this can be dangerous.You should 9. time to think before you post.Remember, social media is fun,but your safety always comes first.Follow these tips,and you can enjoy 10.time online. 1. 2. 3 4. 5. 6 7. 8. 9 10. 五、写作 话题：How to Stay Safe Online 提示：请你根据以下内容提示，写一篇短文，谈谈如何安全上网。 1不要和陌生人分享个人信息（如姓名、地址、电话等）。 2.不要点击不明链接。 3.如果遇到网络欺凌(cyberbullying),要及时告诉家长或老师。 4合理控制上网时间。 要求：80词左右，语句通顺，语法正确，可适当发挥。 一、 阅读理 A篇：1.A2.C3.C4.C 解 B篇：1.C2.B3.C4.C 二、完形填 空 1.C;2.A;3.B;4.C;5.B;6.A;7.A;8.D;9.A;10.B 1.play online games (or:play "Glory of Kings") 2.buying him expensive game equipment 三、阅读短 文回答问题 3.agreed borrowed his father's phone for him 4.500 5.trust strangers online easily 四、短文填 1.share 2.safe 3.advice 4.bad 5.really 6.feel 7.protect 8.used 9.take 10. 空 their 五、写作 范文： How to Stay Safe Online It is important to stay safe when we use the internet.First,never share personal information like your name,address,or phone number with strangers.Second,don't click on strange links,because they may be dangerous.Third,if someone bullies you online,tell your parents or teachers at once.They can help you.Finally,remember to control your screen time.Don't spend too many hours online.Playing outside and reading books are also fun.By following these tips,we can enjoy the internet safely.