Unit4知识点-B部分讲义2026-2027学年沪教版（五四学制）八年级英语上册

本讲义聚焦八年级英语上册Unit4 B部分核心知识点，以对话（盒式磁带相关）为起点，系统梳理词汇（如cassette tapes, squares）、语法（现在完成时I’ve never seen...before，used to have，be used to do）、一词多义（film“胶卷/电影”，record“唱片/记录”）及表达惊讶的功能句型（Really? That’s hard to imagine等），构建从具体语境到语言运用的学习支架。 该资料特色在于融合语言能力与文化意识培养，通过盒式磁带、胶卷等老物件情境，让学生在真实语境中理解词汇语法，同时感受科技发展。一词多义辨析提升思维品质，高频短语汇总与综合练习（单选、完成句子）强化学习能力，课中辅助教师系统授课，课后助力学生自查巩固，有效弥补知识盲点。

八年级英语上册Unit4知识点-B部分讲义 【课文要点】 Part 1: B1 — 对话：关于盒式磁带 1. What‘s in this box? What are all these little squares? 这个盒子里是什么？这些小块是什么？ - squares n. 方块，方形物 2. Oh! They’re my cassette tapes! 哦！它们是我的盒式磁带！ - cassette tapes 盒式磁带 3. What‘s a cassette tape? I’ve never seen one before. 盒式磁带是什么？我以前从未见过。 - I‘ve never seen...before 我以前从未见过……（现在完成时） 4. That can’t be true! It seems like only yesterday that I bought my first cassette! 那不可能！我买第一盒磁带好像就在昨天！ - That can‘t be true! 那不可能！ - It seems like only yesterday 好像就在昨天 5. What does it do? 它是做什么用的？ 6. It plays music. Everyone used to have a cassette player. 它播放音乐。过去每个人都有一台盒式磁带播放机。 - cassette player 盒式磁带播放机 - used to have 过去拥有（现在已不再拥有） 7. You put the cassette inside the machine and music plays. 你把磁带放进机器里，音乐就会播放。 8. My cassette player doesn‘t work any more. 我的磁带播放机不再工作了。 - doesn’t work any more 不再工作了 - not...any more 不再 9. You can ask your dad to borrow his. 你可以问你爸爸借用他的。 - ask sb. to do 要求某人做某事 - borrow v. 借（借入） 10. Dad has one too! 爸爸也有一个！ 11. Yes! I bought him one when he was a little boy. He just loved it. 是的！他小时候我给他买了一个。他非常喜欢它。 - bought him one 给他买了一个 - just loved it 非常喜欢 12. I like listening to music too. I have tons of songs on my smartphone. 我也喜欢听音乐。我的智能手机上有大量的歌曲。 - tons of 大量的（口语） - smartphone n. 智能手机 13. SMART? Phones can think now? Technology has gone so far since I was young! 智能？手机现在能思考了？从我小时候起，科技已经进步了这么多！ - Technology has gone so far 科技已经进步了很多 - since I was young 从我小时候起 Part 2: B2 — 其他老物件 A roll of film（一卷胶卷） 14. It is used to take photos. 它用于拍照。 - be used to do 被用来做某事 15. We put it into a camera and take photos. 我们把它放进相机里拍照。 - camera n. 相机 A record（唱片） 16. It is used to play music. 它用于播放音乐。 17. We put it on a record player and music plays. 我们把它放在唱片机上，音乐就会播放。 - record player 唱片机 A phone book（电话簿） 18. It has names, addresses and phone numbers of people and businesses. 它有个人和企业的姓名、地址和电话号码。 - addresses n. 地址 - businesses n. 企业 19. We use it when we make phone calls. 我们打电话时使用它。 - make phone calls 打电话 Part 3: Word study — Chameleon words（一词多义） 20. They found a roll of film in the attic. 他们在阁楼里发现了一卷胶卷。 - film = thin dark plastic used for taking photos（胶卷） 21. Everyone in the family watched the film except Harry. 家里每个人都看了这部电影，除了Harry。 - film = a movie（电影） 22. This old record player belongs to my great-grandma. 这台旧唱片机属于我的曾祖母。 - record = a flat round piece of plastic on which music is stored（唱片） 23. She records everything that happens to her in her diary. 她在日记中记录发生在她身上的一切。 - records = to keep information by writing it down（记录） Part 4: My learning notes — Expressing surprise（表达惊讶） 24. Really? 真的吗？ 25. That‘s hard to imagine. 那很难想象。 26. I can’t believe it! 我简直不敢相信！ 【高频短语汇总】（中英互译） 1. ________________________ 盒式磁带 2. ________________________ 我以前从未见过 3. ________________________ 那不可能！ 4. ________________________ 盒式磁带播放机 5. ________________________ 不再工作了 6. ________________________ 大量的 7. ________________________ 智能手机 8. ________________________ 科技已经进步了很多 9. ________________________ 被用来做某事 10. ________________________ 唱片 11. ________________________ 唱片机 12. ________________________ 电话簿 13. ________________________ 打电话 14. ________________________ 一卷胶卷 15. ________________________ 那很难想象 16. ________________________ 我简直不敢相信！ 【综合练习】 一、单项选择 ( ) 1. I’ve never ______ a cassette tape before. A. see B. saw C. seen D. seeing ( ) 2. Everyone ______ to have a cassette player. A. use B. used C. uses D. using ( ) 3. My cassette player doesn‘t work ______ more. A. any B. some C. no D. many ( ) 4. You can ask your dad ______ his. A. borrow B. to borrow C. borrowing D. borrowed ( ) 5. I have ______ of songs on my smartphone. A. ton B. tons C. a ton D. ton’s ( ) 6. Technology has gone so far ______ I was young. A. for B. since C. from D. after ( ) 7. A roll of film is used ______ photos. A. take B. to take C. taking D. took ( ) 8. We put a record ______ a record player. A. on B. in C. at D. for ( ) 9. A phone book has names, addresses and phone ______. A. number B. numbers C. numbering D. numbered ( ) 10. We use a phone book when we ______ phone calls. A. take B. do C. make D. have ( ) 11. I ______ listening to music. A. like B. likes C. liking D. to like ( ) 12. That ______ be true! A. can’t B. isn‘t C. doesn’t D. hasn‘t ( ) 13. It seems ______ only yesterday. A. as B. like C. for D. with ( ) 14. ______ phones can think now? A. Smart B. Smarter C. Smartest D. More smart ( ) 15. I bought him one ______ he was a little boy. A. where B. when C. what D. who 二、根据汉语意思完成句子（每空一词） 1. 盒式磁带是什么？我以前从未见过。 What’s a cassette tape? I‘ve ____________ seen one before. 2. 那不可能！ That ____________ be true! 3. 我买第一盒磁带好像就在昨天。 It seems ____________ only yesterday that I bought my first cassette. 4. 过去每个人都有一台盒式磁带播放机。 Everyone ____________ to have a cassette player. 5. 我的磁带播放机不再工作了。 My cassette player doesn’t work ____________ more. 6. 你可以问你爸爸借用他的。 You can ask your dad to ____________ his. 7. 我的智能手机上有大量的歌曲。 I have ____________ of songs on my smartphone. 8. 科技已经进步了这么多！ Technology has gone so ____________! 9. 一卷胶卷被用来拍照。 A roll of film is ____________ to take photos. 10. 唱片被用来播放音乐。 A record is used to ____________ music. 11. 电话簿有姓名、地址和电话号码。 A phone book has names, addresses and phone ____________. 12. 我们打电话时使用它。 We use it when we ____________ phone calls. 13. 那很难想象。 That’s hard to ____________. 14. 我简直不敢相信！ I ____________ believe it! 15. 阁楼里有一卷胶卷。 There is a roll of ____________ in the attic. 16. 除了Harry，家里每个人都看了这部电影。 Everyone in the family watched the ____________ except Harry. 17. 这台旧唱片机属于我的曾祖母。 This old record player ____________ to my great-grandma. 18. 她在日记中记录一切。 She ____________ everything in her diary. 19. 他小时候我给他买了一个。 I bought him one ____________ he was a little boy. 20. 手机现在能思考了？ ____________ can think now? 【参考答案】 一、单项选择 1. C 2. B 3. A 4. B 5. B 6. B 7. B 8. A 9. B 10. C 11. A 12. A 13. B 14. A 15. B 二、完成句子 1. never 2. can’t 3. like 4. used 5. any 6. borrow 7. tons 8. far 9. used 10. play 11. numbers 12. make 13. imagine 14. can‘t 15. film 16. film 17. belongs 18. records 19. when 20. Phones 1 学科网（北京）股份有限公司 $