Unit 4 Breaking boundaries（复习课件）英语外研版选择性必修第二册

该高中英语单元复习课件系统梳理了外研版选择性必修第二册Unit 4的核心知识，通过知识图谱整合重点词汇、短语、语法及主题写作结构，考点串讲结合情景导学与用法归纳细化词汇句型，单元语法分模块解析it作形式主语，主题写作提供结构模板与素材库，构建起“词汇-语法-语用”的完整知识网络。 其亮点在于融合语言能力、思维品质与学习能力培养，如主题写作设计“人物介绍演讲稿”任务，通过素材库与模板提升学生语言表达的准确性和感染力，语法训练采用分层即时训练，从基础填空到语篇应用培养逻辑分析能力，综合训练覆盖单词拼写、语法填空等多元题型，助力学生巩固知识，也为教师提供精准复习教学支持。

外研版·选择性必修第二册 Unit 4 Breaking boundaries 单元复习 Unit 4 Breaking boundaries 复习目标 知识图谱 考点串讲 单元语法 主题写作 综合训练 复习目标 知识图谱 考点串讲 单元语法 主题写作 综合训练 CONTNETS 1.学生能够掌握本单元重点词汇，如 boundary, vital, comrade, tragic, relieve, specialist, infectious, liberty, noble 等，并能在不同语境中正确运用。（重点掌握） 2.学会重要短语和句型，如 take any chances, put...at risk, be caught up in, not to mention等，并能利用这些短语和句型进行口头和书面表达。（重点掌握） 3.提高阅读理解能力，能够读懂关于人类共同价值、和平与自由主题的语篇（包括演讲稿、历史文献、人物传记、时事评论等），理解文章主旨大意、细节信息，并能根据文章内容进行推理判断。 4.培养书面表达能力，能够运用所学词汇、短语和句型，写一篇演讲稿，做到语言表达准确、条理清晰、内容完整，具有一定的感染力和说服力。 复习目标 知识图 Breaking boundaries 重点单词 boundary 分界线，边界 statistic 统计数据 assist 协助，帮助 vital 极其重要的 combat 防止，抑制 infectious 传染性的 outbreak 爆发 devotion 奉献 realistic 能够实现的 minority 少数派 inclusive 包容广阔的 joint 联合的，共同的 重点短语 take any chances 心存侥幸，冒险 put...at risk 把……置于危险中 against all odds 尽管凶多吉少 be caught up in 被困在……中 at a great cost 以巨大的代价 look to the future 展望未来 dedicate to 致力于，献身于 in a larger sense 从更广泛的意义上来说 单元语法 动词-ing形式作主语（V-ing as subject） 动词-ing形式作宾语（V-ing as object） 主题写作 人物介绍类演讲稿 CONTNETS Unit 4 Breaking boundaries 考点串讲 外研版·选择性必修第二册 考点串讲 重点词汇 单词 词形 意思 n. 分界线；边界 n. （一项）统计数据 v. 协助，帮助 adj. 极其重要的 adj. 悲惨的，不幸的 v. 防止，抑制 n. 专家 adj. 传染性的 n. 诊所；门诊部 n. 爆发，突然发生 boundary statistic assist vital tragic combat specialist infectious clinic outbreak 考点串讲 重点词汇 单词 词形 意思 n. 意外的幸运事；奇迹 v. 弥补，补偿 adj. （目标、希望）能够实现的 n. 少数派，少数 adj. 包容广阔的 adj. 和睦的，融洽的 adj. 值得做的，有意义的 n. 分歧，分裂 v. 构想，设想 v. 致力于，献身于 miracle compensate realistic minority inclusive harmonious rewarding division conceive dedicate 考点串讲 词形转换 1. infectious adj. 传染性的 → infect vt. 感染，传染 → infection n. 传染病；感染 2. realistic adj. (目标、希望)能够实现的 → reality n. 真实；现实；逼真 → realise vt. 领会；了解；实现；实行 → real adj. 真实的；实际的 3. minority n. 少数派；少数 → majority 反义词 4. inclusive adj. 包容广阔的 → include vt. 包括 5. division n. 分歧，分裂 → divide v. 分开；分割；划分 6. nobly adv. 高尚地，崇高地 → noble adj. 高尚的 7. influential adj. 有影响力的 → influence vt. 影响 n. 影响；作用 考点串讲 词汇精讲 1. assist v. 协助，帮助 情景导学 It assists people based on need, regardless of which country they are from. 它根据需要帮助人们，不管他们来自哪个国家。 用法归纳 assist sb. to do sth. 帮助某人做某事 assist sb. in/with sth. 帮助某人某事 assist sb. in doing sth. 帮助某人做某事 知识拓展 assistance n. 帮助；协助 come to one’s assistance 援助某人 with the assistance of 在……的帮助下 assistant n. 助手；助理；售货员 即时训练 Despite his cries, no one came to his _____________ (assist). assistance 考点串讲 词汇精讲 2. vital adj. 极其重要的 情景导学 But it is vital not to take any chances. 但重要的是我们不能心存侥幸。 用法归纳 be vital for/to... 对……极为重要 It is vital that... ……是极重要的（从句谓语用虚拟语气 should + 动词原形，should可省略） It is vital to do sth. 做某事很重要 即时训练 As far as I’m concerned, it is vital _____________ (keep) accurate records. to keep 考点串讲 词汇精讲 3. devotion n. 奉献 情景导学 With each person I met, I felt a growing sense of pride as part of this extraordinary team, whose devotion to the cause shone from their eyes. 能够和在这里遇到的人一起，成为这个杰出小组的一员，我心中的自豪感油然而生，大家的双眼中都熠熠闪耀着奉献精神的光芒。 用法归纳 devotion to sth. 对……的奉献 知识拓展 devote v. 致力，献身，倾注 devote... to... 把……用于；献身于 devote oneself to 致力于；献身于 devoted adj. 深爱的；忠诚的 be devoted to 专心于；致力于 即时训练 Before the exam, I devoted myself _____________ preparing for it. to 考点串讲 词汇精讲 4. division n. 分歧，分裂 情景导学 Now it was up to the living to remove not only the divisions between North and South, but the boundaries between black and white, and work step by step towards the equality of humankind. 现在，责任落到了生者身上，不仅要消除南北之间的分歧，还要打破黑人与白人之间的界限，一步一步朝着实现人类平等而努力。 用法归纳 divide v. 分割；划分；分配 divide... into... 把……分成…… divide... from... 把……与……隔开 divide sth. between/among sb. 把某物分配给某人 divide A by B A除以B，用B除A 即时训练 All expenses are to be equally divided _____________ you and me. between 考点串讲 词汇精讲 5. bring forth 使产生，使出现 情景导学 Four score and seven years ago our fathers brought forth, upon this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal. 87年前，我们的先辈在这块大陆上创立了一个新的国家，它孕育于自由之中，献身于人人生而平等的理想。 用法归纳 bring forth 使产生，使出现 知识拓展 bring about 引起；产生；导致；带来 bring back 使恢复；带回；使想起 bring down 让……降下来；使倒下 bring in 引入；赚（钱） bring out 使显现出；阐明；出版；生产 bring up 培养；抚养；养育；教育；提出 即时训练 Some people fear that air pollution may bring _____________ changes in the weather around the world. about 考点串讲 词汇精讲 6. in vain 白白地 情景导学 ... that we here highly resolve that these dead shall not have died in vain. ……我们在这里下最大的决心，不让逝者白白失去生命。 用法归纳 in vain 白白地；徒劳地（在句中常作表语和状语） 知识拓展 vain adj. 虚荣的，自负的；徒劳的，无结果的 vain attempt/effort 徒劳的尝试/付出 vainly adv. 徒劳地；不成功地 即时训练 She closed her eyes tightly _____a vain attempt to hold back the tears. in 考点串讲 词汇精讲 7. influential adj. 有影响力的 情景导学 Edgar Snow was an American journalist who wrote influential books and articles about China in the 1930s. 埃德加·斯诺是一位美国记者，他在20世纪30年代写过关于中国的有影响力的书籍和文章。 用法归纳 influential adj. 有影响力的 have an influence on/upon 对……产生影响 under the influence of 在……的影响下 知识拓展 influence n. 影响，作用；感化力 v. 影响，对……起作用 即时训练 He had a beneficial influence _____________ the development of the company. on 考点串讲 句型精讲 He gave them a new vision of what the United States of America should be, based on the ideals set down by its Founding Fathers 87 years before. Sentence 1 主句 what引导的名词性从句相当于名词，引导宾语从句，作介词 of 的宾语 译文：他给予了美国人民一个新的愿景，那就是依照87年前开国元勋的理念，美利坚合众国本应成为的样子。 即时训练 What puzzles Lily’s friends is _____________ she always has so many crazy ideas. why 过去分词短语作状语，修饰整个主句，表示“基于……”。 考点串讲 句型精讲 Sentence 1 知识扩展 what与that的区别： what：既起引导作用，又充当句子成分，相当于“the thing(s) that” that：只起引导作用，没有实际意义，不充当句子成分，且在宾语从句中可省略 考点串讲 句型精讲 Although Snow was not the only international journalist to set foot in China during the early decades of the 20th century, what set him apart from the others was that he actually spent time with the Chinese Red Army. Sentence 2 what 引导的主语从句（= The thing that set him apart...），在整句中作主语 译文：尽管斯诺不是20世纪初唯一一位踏足中国的国际记者，但他与其他人的不同之处在于，他确实与中国红军共事过。 即时训练 Yang Qian was the first athlete _____________ (win) the gold medal in Tokyo Olympics. to win 由 Although 引导的让步状语从句，表示“虽然……” that 引导表语从句 不定式短语作定语，修饰前面的名词。 Unit 4 Breaking boundaries 单元语法 外研版·选择性必修第二册 单元语法 it作形式主语（一） 当动词不定式（短语）、动名词（短语）或者从句作句子的主语时，通常用 it（不能用 that, this 等词）来作形式主语代替它们，而将真正的主语放在后面，以保持句子结构的平衡。此时 it 只起先行引导作用，本身无词义。 即时训练 1. ____ is no use arguing with Bill because he will never change his mind. 2. It takes me 30 minutes ______(go) to school by bike every day. It to go 单元语法 it作形式主语（二） 1. It + be + 名词/名词词组 + to do sth. 这类名词有：a pleasure, a fact, a good habit 等。 It is not a good habit to stay up too late. 睡得太迟不是个好习惯。 2. It + be + 形容词 + (for sb.) + to do sth. 这类形容词用来描述不定式行为本身的性质：wrong, right, important, difficult, easy, necessary 等。 It is necessary for you to be fully aware of your own shortcomings. 充分认识自己的缺点是很必要的。 单元语法 it作形式主语（三） 3. It + be + 形容词 + of sb. + to do sth. 这类形容词用来描述不定式行为者的性格、品行：kind, good, polite, selfish, foolish, clever, wise 等。 It was foolish of you to behave like that. 你那种表现真是太蠢了。 for sb. 与 of sb. 的区别： It + be + adj. + for sb. + to do 描述事情的性质（important, necessary, difficult, easy 等） It + be + adj. + of sb. + to do 描述人的品行/性格（kind, good, polite, foolish, clever, wise 等） 单元语法 it作形式主语（四） it作动名词的形式主语的常用句型 It + be + 名词/名词词组 + doing sth. 这类名词有：(no) use, (no) good, a waste of time, worthwhile 等。 The doctor told us that it is no good eating too much meat. 医生告诉我们吃太多的肉没有好处。 单元语法 核心用法 即时训练 1. It is essential _____________ you to accomplish the papers before Sunday. 2. It’s clever _____________ you to work out the maths problem. 3. It is necessary for high school students _____________ (learn) another foreign language. 4. As far as I’m concerned, it is a waste of time_____________ (argue) with him, he won’t change his mind. for of to learn arguing 单元语法 it作形式主语（五） it作主语从句的形式主语的常用句型 1. It + be + 形容词 + 主语从句 It’s certain that William will do well in the exam. 威廉肯定能考得很好。 名师点津：在“It is important/necessary/essential + that...”句式中，that从句要用虚拟语气，即谓语动词用 “should + 动词原形”，should可省略。 2. It + be + 名词/名词词组 + 主语从句 这类名词有：a fact, a pity, a shame, a wonder, no wonder 等。 It is a fact that English is being accepted as an international language. 事实上，英语正被公认为国际语言。 单元语法 it作形式主语（五） 3. It + be + 过去分词 + 主语从句 这类过去分词有：known, announced, believed, decided, said, reported, suggested, requested, required, ordered, proposed, recommended 等。 It is known to all that Christopher Columbus discovered America in 1492. 众所周知，克里斯托夫·哥伦布于1492年发现了美洲。名师点津：在“It is suggested/requested/required/ordered/proposed/recommended that...”句式中，that从句要用虚拟语气，即谓语动词用 “should + 动词原形”，should可省略。 4. It + 不及物动词 + 主语从句 这类动词有：seem, matter, strike, occur, happen 等。 It occurred to me that he had gone to the USA. 我突然想到他已经去美国了。 单元语法 it作形式主语 即时训练 1. It’s useless ___________(complain) without taking action. 2．It is illegal  ___________a teenager to drive a car without a license. 3．It can be proved ___________what he has said is not true. 4．Is it necessary  ___________ (complete) the design before National Day? 5．In fact it is a hard job for the police ______  (keep) order in an important football match. 6．He was sent off for ___________ (argue) with the referee. 7．It is our belief ___________ improvements in health care will lead to a stronger，more prosperous economy. 8．It is generally _________(accept) that a boy must learn to stand up and fight like a man. 9．It suddenly occurred to him  ___________he had left his keys in the office. 10．It ___________ (require) that you should not tell other people the password of your e­mail account. complaining for that complete to keep arguing that accepted that is required Unit 4 Breaking boundaries 主题写作 外研版·选择性必修第二册 主题写作 主题解读 单元的写作任务要求写一篇人物介绍类的演讲稿，文章除了要符合一般演讲稿的特点和要求外，还要指明人物、时间、地点、事件及结果等要素。 演讲稿属于应用文的一种。写作时要首先点明演讲的主题和目的，以引起听众的注意；主体部分可以通过事例、细节描述等有步骤地展开对主题的介绍；结尾总结时，要对主题进行概括、强调。 主题写作 写作结构 第一部分：人物基本身份 明确人物的职业、国籍等基础信息，让听众快速建立对人物的初始认知 第二部分：主要成就/行为 阐述人物做了什么有影响力的事，如创作的作品、开展的行动等，展现人物价值 第三部分：独特之处/突破 说明与他人不同的地方，如突破的界限、具备的特殊品质，突出人物的独特性 第四部分：个人评价/推荐 表达对人物的赞赏、看法，或推荐其作品等，拉近与听众距离，传递情感与观点 主题写作 写作结构 人物介绍 开头段 中间段 结尾段 绍人物的身份、职业、成就及其产生的影响 明确人物是谁，做了什么 描述该人物与众不同的方面 突破的界限、具备的特殊品质 阐述自己的感受 从人物事迹中学到的品质以及对人物的评价 主题写作 写作素材 人物基本身份类： American journalist 美国记者 in the 1930s 在20世纪30年代 an ordinary person 一个普通人 a pioneer in... ……领域的先驱者 an influential figure in... ……领域的有影响力的人物 主题写作 写作素材 主要成就/行为类： wrote influential books and articles 撰写有影响力的书籍和文章 set foot in... 踏上……土地 spent time with... 与……相处 conducted interviews with... 对……进行采访 made a contribution to... 为……做出了贡献 risked one’s life to do sth. 冒着生命危险做某事 worked as... 作为……工作 recorded what he/she saw and heard 记录所见所闻 introduced...to the world 向世界介绍…… 主题写作 写作素材 独特之处/突破类： broke ideological boundaries 打破意识形态界限 captured the spirit of the period 捕捉那个时代的精神 with unprecedented authenticity 以前所未有的真实性 special insight and bravery 独特的洞察力和勇气 what set him/her apart from the others was that... 让他/她与众不同的是…… went beyond the limits of... 超越了……的局限 a unique perspective on... 对……的独特视角 showed great courage in... 在……方面表现出巨大勇气 主题写作 写作素材 个人评价类： I admire him/her for... 我钦佩他/她…… I am determined to learn from him/her. 我决心向他/她学习。 Today, he/she is rightfully remembered as... 如今，他/她被尊为…… His/Her story inspires me to... 他/她的故事激励我…… left a deep impression on me 给我留下了深刻的印象 主题写作 写作素材 （1）开头问候与引入： My name is... Today I am very glad to have the opportunity to make this presentation. I shall be speaking about... 我是……今天很高兴能有机会做这个演讲。我演讲的内容是…… Good morning, everyone! Today, I’m going to introduce... 大家早上好！今天，我要介绍…… Have you ever heard of...? 你们听说过……吗？ 主题写作 写作素材 主体展开： He/She was born in... and worked as... 他/她出生于…… ，担任…… He/She made a contribution to... 他/她为……做出了贡献。 He/She is best known for... 他/她以……而闻名。 Although he/she was..., what set him/her apart from the others was that... 虽然他/她…… ，但让他/她与众不同的是…… With unprecedented..., he/she... 以前所未有的…… ，他/她…… He/She risked his/her life to... 他/她冒着生命危险…… 主题写作 写作素材 结尾评价： To sum up,... 总而言之…… I admire him/her for... and I’m determined to learn from him/her. 我钦佩他/她……我决心向他/她学习。 Today, he/she is rightfully remembered as... 如今，他/她被尊为…… I hope everyone can learn from his/her spirit. 我希望每个人都能学习他/她的精神。 That’s all for my presentation. Thank you for listening! 我的演讲到此结束，感谢聆听！ 主题写作 写作模板 Good morning, everyone! Today, I’m going to introduce _____________, a _____________. He/She is best known for _____________. He/She _____________. He/She made a great contribution to _____________. What set him/her apart from others was that _____________. With _____________, he/she _____________. I admire him/her for _____________. I hope everyone can learn from his/her spirit. Thank you for listening! 主题写作 写作练习 你校英语俱乐部正在举办以“Great People in History”为主题的演讲比赛。请你根据以下要点，写一篇介绍埃德加·斯诺（Edgar Snow）的演讲稿： （1）人物的基本身份； （2）人物的主要成就和行为； （3）人物的独特之处； （4）你对他的评价。 注意： （1）词数100左右； （2）开头和结尾已给出，不计入总词数。 Good morning, everyone! Today, I’m going to introduce Edgar Snow. 主题写作 写作范文 Good morning, everyone! Today, I’m going to introduce Edgar Snow, an American journalist in the 1930s. He is best known for writing influential books and articles about China. He set foot in China and spent time with the Chinese Red Army, risking his life to record what he saw. What set him apart from others was that he broke ideological boundaries and captured the spirit of the period with unprecedented authenticity. I admire him for his courage and determination. I hope everyone can learn from his spirit. Thank you for listening! Unit 4 Breaking boundaries 综合训练 外研版·选择性必修第二册 综合训练 一、单词拼写（根据句意及汉语提示写出单词）。 1. A nurse will __________ (协助) the doctor during the operation. 2. The flu is highly __________ (传染性的) and spreads very quickly. 3. Please __________ (消毒) the wound with alcohol before bandaging it. 4. The company will __________ (补偿) you for all your travel expenses. 5. We need to set a __________ (现实的) goal that we can actually achieve. 6. The area has an __________ (包容的) policy that welcomes people from all classes. 7. The different departments worked together in a __________ (和谐的) way. 8. The __________ (平民的) population suffered heavy losses in the war. 9. She couldn't __________ (忍受) the pain any longer and called for help. 10. She is one of the most __________ (有影响力的) figures in the fashion industry. assist infectious disinfect realistic compensate inclusive harmonious civilian endure influential 综合训练 二、单句语法填空 1. The __________ (infect) disease spread rapidly through the crowded city. 2. We need to set a __________ (reality) goal that we can actually achieve this year. 3. Only a __________ (minor) of students voted against the new policy. 4. The price of the meal is __________ (include) of service charges. 5. There is a deep __________ (divide) of opinion among the committee members. 6. She behaved __________ (noble) even when facing unfair criticism. 7. Her speech was so __________ (influence) that it changed many people's minds. infectious realistic minority inclusive division nobly influential 综合训练 三、完成句子 1. My father, ______________（一位资深医生）, has worked in Africa for over ten years. 2. __________________（没有国界）for love, for kindness, or for anyone willing to lend a helping hand. 3. As I walked into the library, I could hear __________________________________（至少三种不同的语言）being spoken by the students around me. 4. Although the task is extremely challenging, we will ______________（永不放弃）and our efforts will eventually pay off. 5. The unexpected encouragement from her teacher ________________（弥补了）all the frustration she had experienced before. a senior doctor There are no borders at least three different languages never give up compensated for 综合训练 四、语篇语法填空 Space Day of China falls on April 24th every year.In 2026,the theme of the day is a slogan ________(reflect)the spirit of Chinese space exploration.This year marks ________ 70th anniversary of the founding of China's space industry.In the early days,the country was weak,with equipment and technology ________(limit). Though conditions were tough,the first-generation scientists spared no effort ____________(develop)space technology. In 1970, Dongfanghong-1,China’s first artificial satellite, ____________ (launch)successfully,which inspired the whole nation. Over the past decades,China ____________(achieve)remarkable progress in space programs.It has completed great projects, __________(include)lunar and Mars exploration.Scientists face strict technical blockades, ________ they never give up independent innovation.Innovation is the key ________ China’s rapid space development.Besides,cooperation is also vital.We are willing to share space resources and serve mankind __________(globe). reflecting the limited to develop was launched has achieved including but to globally 外研版·选择性必修第二册 感谢聆听 $