Unit3 Sea Exploration 词汇讲解课件2025-2026学年高中英语人教版选择性必修第四册

该高中英语课件聚焦选择性必修第四册Unit 3“海洋探索”主题，系统梳理23个高频词汇及用法，通过“看图猜词”激活学生已知，结合联想记忆（如fleet-flee）、短语搭配（如set sail for/from）搭建学习支架，帮助学生从词汇认知过渡到语境运用。 其亮点在于融合语言能力与思维品质培养，通过主题短文助记整合maritime, coral等词汇，构建“海洋探索”语境，提升学生主题表达逻辑。采用英汉互译、句子填空等多样化练习，结合近义词辨析（如tale-story），助力学生掌握科学学习方法，既提升词汇运用能力，也为教师提供系统教学资源，提高课堂效率。

选择性必修第四册 Unit 3 Sea Exploration Ocean World Words & Expressions 高频重点词汇 6.11 1. set sail 起航 set sail for= sail for 起航前往 set sail from 自......起航 Practice: 1) After spending a brief period in Japan, she ________________ (起航前往) India. 2) We___________________（自......起航）Shanghai on a sunny morning, excited about our journey to Australia. set sail for set sail from She told the children a fairy tale before bedtime. 2. tale n. 故事，叙述 （尤指虚构的、带奇幻色彩的故事） (近义词) story, narrative, legend, fable, anecdote，fiction fairy tale folk tales Practice: 她在睡前给孩子们讲了一个童话故事。 童话故事 民间故事 3. extend vt. 扩展；延长；表示感谢 【表示延长/适配议论文】 eg.The school plans to the library opening hours to meet students' growing reading needs. 学校计划延长图书馆开放时间，以满足学生日益增长的阅读需求。 【表示感谢/适配于书信】 因…向某人表示衷心的感谢 extend my heartfelt thanks to sb for sth eg.我想向你致以诚挚的感谢，感谢你在我逗留期间给予的慷慨帮助。 I for your generous help during my stay in your city. extend would like to extend my heartfelt thanks to you 4. negotiate v.谈判，商谈 (近义词) =discuss/consult/bargain/settle negotiation n. 谈判，商谈 negotiate with.... =in negotiation with 同……协商 under negotiation =under discussion 在商讨之中 You have to negotiate with the locals for a better price to buy what you need. Practice: 我们将共同商议方案。 We will negotiate the plan together. = We will discuss the plan together. 5.fleet n. 船队，舰队； adj. 快速的； adv. 浅地 flee v. 逃走 (fled-fled) （联想记忆法）一群舰队fleet看见t就快速的逃跑flee了 a fleet of 一群；一队 Practice: 一队小船缓缓驶过湖面。 A fleet of boats sailed slowly across the lake. 6. behold-beheld-beheld v.看；看见 beholder n. 旁观者；观看者 a joy /pleasure to behold赏心悦目 a wonder to behold令人惊叹 a sight to behold壮观的景象 Practice: 她的颜值真是赏心悦目。 Her beauty is truly a joy to behold. 7. league n. 等级，水平= level, rank ;联合会，联赛 be in a league of one’s own 独领风骚 翻译句子 As a painter, he is in a league of his own (= much better than others) . 8. royal adj. 皇家的，王室的，高贵的 royalty n.王室成员，版税 loyal adj.忠诚的 the royal palace 皇宫 the royal road 坦途；成功的捷径 翻译句子 There is no royal road to learning. 学无坦途 spice /spaɪs/ n.(调味)香料 9 9. withdraw vi./vt. （使）撤回，撤离 (withdrew-withdrawn) withdraw from 退出，撤回 withdraw money    取钱 withdraw troops    撤军 1） I’d like to withdraw some money from my account. 2）The troops have been withdrawn from the danger area. 10. maritime adj. 海的，海运的，海事的 21st Century Maritime Silk Road 21世纪海上丝绸之路 the Belt and Road Initiative 一带一路 movie channel 电影频道 English Channel 英吉利 海峡 channel 看图猜词 11. bond n. 纽带，关系 vt./vi. 增强信任关系，使牢固结合 bond with sb. 和…增强关系 1)Reading was a special way to bond with my children. 2)The agreement strengthened the bonds between the two countries. 12. hand in 上交 hand out 分发 at hand 在手边；在附近 give/ lend sb a hand 给某人帮忙 = do sb. a favour on one hand …on the other hand 一方面……另一方面 Practice: 我们经常一起做饭来增进彼此的感情。 一方面，阅读能帮我们学习新知识；另一方面，它也能帮我们放松。 We often cook together to bond with each other. On one hand, reading helps us learn new knowledge; on the other hand, it helps us relax. Consolidation巩固练习 英汉互译（传声筒游戏检测） 她在睡前给孩子们讲了一个童话故事。 我想向你致以诚挚的感谢，感谢你在我逗留期间给予的慷慨帮助。 我们将共同商议方案。 一队小船缓缓驶过湖面。 她的颜值真是赏心悦目。 As a painter, he is in a league of his own. 学无坦途。 13. profession n. 职业，行业[特指需要专业教育、资格认证的职业（如医生、教师、律师）] professional adj. 专业的 (反义词 amateur adj. 业余的) professor n.教授 Practice: 1)The doctor is respected by his profession. 2)I’d like to invite you to attend a lecture to be delivered by Professor Liu from a famous university. 3)My father is a professional accountant. 14. mixture n. 混合，结合体，混合物 mix vt. 混合 mixed adj.混合的 a mixture of　　...的混合物；（情感）...与...交织 Practice: The city is a mixture of ancient traditions and modern life. 译文： 当她看到那封信时，她的脸上流露出喜悦与悲伤交织的神情。 这座城市是古老传统与现代生活的融合体。 Her face showed when she saw the letter. a mixture of joy and sadness 15. coverage 不可数n. 新闻报道 media coverage live coverage 覆盖范围 signal coverage （保险等的）保障 health coverage provide coverage eg. The event received wide media coverage. eg. The mobile phone has good signal coverage in the mountains. 媒体报道 现场直播报道 信号覆盖 医保范围 提供保障 这件事得到了媒体的广泛报道。 这款手机在山区的信号覆盖很好。 【拓展】 cover v.报道（新闻）； 覆盖，遮盖；包括，涉及；足够支付（费用）; 占地（一片面积）；行走（一段路程） n.封面；盖子 The reporter covered the war from the front line. Snow covers the ground. The book covers many topics. The scholarship will cover my tuition and living costs. We covered 10 kilometers today. The forest covers an area of 100 square miles. I like the cover of this magazine. Please put the cover on the bottle. 16. press conference 新闻发布会 press n. 新闻界；出版社 v. 挤压 conference n. 会议 hold a press conference 召开新闻发布会 attend a press conference 出席新闻发布会 Practice: 许多记者出席了这场新闻发布会。 Many reporters attended the press conference. 17. applaud vt.& vi.鼓掌 vt.称赞;赞赏 applaud for为……喝彩 applaud sb for (doing)sth 因某事而赞扬某人= praise sb for sth eg.The teacher applauded the students their hard work. applause n.鼓掌；喝彩 thunderous applause 雷鸣般的掌声 Practice: 她的演讲结束后，响起了雷鸣般的掌声。 for Her speech was followed by ___________________. thunderous applause manned  /mænd/ adj.有人控制的; 需人操纵的 21 submersible /səbˈmɜːsəbl/ n.潜水器;可潜船 22 underwater  /ˌʌndəˈwɔːtə(r)/ adv.在水下adj.水下的 23 capsule /ˈkæpsju:l/ n.胶囊;太空舱 24 coral /ˈkɒrəl/ n.珊瑚 25 directory /dəˈrektəri/ n.电话号码簿;(计算机文件或程序的)目录 26 18. migration n.迁移=movement ；移居=relocation migrate v.迁徙=move/travel ; 移居=relocate migrant n.移民（短期务工）；迁徙动物 immigrant n.移民（定居）= settler/ newcomer Practice: Many birds migrate to the south in winter. 许多鸟类在冬天迁徙到南方。 19. mercy n.怜悯=compassion 同情 merciful adj.仁慈的=kind/compassionate merciless adj.无情的；残忍的=cruel/ruthless without mercy 无情地 show mercy to sb = have mercy on sb 怜悯某人 Practice: The judge showed mercy to the young offender(罪犯). 法官对这名年轻的罪犯网开一面。 Consolidation 巩固练习 英汉互译 The judge showed mercy to the young offender. Many birds migrate to the south in winter. The teacher applauded the students for their hard work. 许多记者出席了这场新闻发布会。 The event received wide media coverage. 当她看到那封信时，她的脸上流露出喜悦与悲伤交织的神情。 I’d like to invite you to attend a lecture to be delivered by Professor Liu. 20. possession n. 个人财产=property [pl.] possessions=belongings 财产 possess vt. 拥有=own/ have/ hold take possession of =(be) in possession of 拥有...（主动） (be) in the possession of 归...所有（被动） Practice: 这个商人拥有一家大型超市。 1)The merchant _______________________a large supermarket. 2)The merchant is_______________________a large supermarket. 3)The large supermarket is ______________________the merchant. takes possession of in possession of in the possession of 21. opponent n. 对手，竞争者 oppose vt.反对 opposed adj.反对的 （be opposed to doing sth）反对做... opposite adj. 相反的;n.对立面 Practice: 她在决赛中击败了对手。 Many people oppose the new policy. My parents are opposed to my decision to drop out of school. We have opposite opinions on this matter. 我的父母反对我辍学的决定。 许多人反对这项新政策。 She defeated her opponent in the final game. 我们对这件事的看法截然相反。 22. log vt. 记录 (=record) [logged - logged-logging] n.日志；（事件的） 正式记录:原木 blog n.博客/v.写博客 blog entry 博客文章 vlog n.视频博客 film/upload a vlog 拍摄/发布视频博客 log in / on 使注册, 使登录 【反义】 log out / off 使注销；使退出； keep a log / diary 记日志 Practice: You need to log in with your username and password to use the system. 你需要用用户名和密码登录才能使用这个系统 23. arrest vt. 逮捕，阻止；吸引 arrest one’s attention =attract/draw/catch one’s attention 吸引某人的注意力 Practice: 1)She was under arrest on suspicion of murder. 2)我走进房间时，桌上的一张小纸条吸引了我的目光。 When I , a small note on the table 她因涉嫌谋杀而被逮捕。 walked into the room arrested my attention Consolidation 巩固练习 句子填空练习（用括号内单词的正确形式填空） 1. The police found all his stolen ________ (possess) in the basement. 2. She is a strong ________ (oppose) of the new law. 3. Please ________ (log) in to your account before making any changes. 4. A strange light in the sky ________ (arrest) his attention while he was driving. possessions opponent log arrested 短文助记 以“海洋探索”为主题 When we start maritime exploration, a whole fleet will set sail from the harbour and set sail for the vast ocean. Sailors talk about fantastic sea tales and trade rare spices. They often negotiate with others and sometimes have to withdraw from dangerous areas. The colourful coral under the sea is lovely to behold. Excellent explorers are in a league of their own and are respected by the royal family. The ocean becomes a strong bond linking different lands. On one hand, we study the migration of sea creatures; on the other hand, we use manned submersibles and capsules to explore deep waters. Their work gets wide media coverage, and they hold a press conference to share experiences, earning loud applause. We log all findings. The mysterious ocean always arrests our attention. We treat sea life with mercy and fight against every tough opponent. This adventure is a perfect mixture of bravery and curiosity. 当我们开启海洋探索之旅时，一支船队会从海港 起航，驶向浩瀚的大洋。水手们讲述奇妙的海洋故事，交易珍稀香料。他们时常与他人商议事宜，有时还不得不从危险海域撤离。 海底色彩斑斓的珊瑚十分值得观赏。杰出的探索者们独领风骚，也受到皇室的敬重。海洋成为联结各地的坚固纽带。 一方面，我们研究海洋生物的迁徙习性；另一方面，我们借助载人的 潜水器与太空舱探索深海。他们的工作得到了媒体的广泛报道，探索者们还会召开新闻发布会分享经历，收获阵阵掌声。 我们记录下所有发现。神秘的海洋总能吸引我们的目光。我们心怀善意对待海洋生物，直面每一个艰难挑战。这场探索之旅，是勇气与好奇心的完美融合。 $