Unit 6 Section Ⅰ（配套word）-【精讲精练】2026-2027学年高中英语选择性必修第一册（外研版）

本高中英语讲义以《天路》为语篇载体，聚焦青藏铁路建设与生态保护主题，系统梳理核心词汇（如delicate脆弱的、massive巨大的）、重点语法（现在分词作状语、疑问词+不定式结构）及阅读策略（主旨归纳、细节理解），构建从语言知识学习到读写技能应用的递进式学习支架。 该资料突出文化意识与语言能力培养，通过青藏铁路工程成就渗透家国情怀，结合语境化词汇练习（如wander的用法）和语法情境解析（如before引导从句）提升语言运用能力。课中助力教师开展语篇深度分析，课后为学生提供词汇语法巩固及写作微练（如自然场景描写），有效查漏补缺。

[对应学生用书P112] Section Ⅰ　Starting out & Understanding ideas [对应学生用书P112] The Sky Railway [1]Sitting back in my seat，I can't quite believe that I'm about to travel along the railway that many foreign experts claimed① was “impossible”. The train has been racing② along steadily③ since it left Xining.All this time，the song “Sky Railway” has been playing inside my head.The words “railways like massive④ dragons are winding⑤ among the mountains” seem particularly vivid as I travel across the “roof of the world⑥”． [1]本句为复合句。Sitting back in my seat为v.-ing短语作伴随状语。第一个that引导宾语从句，作believe的宾语，该宾语从句中包含“be about to do sth”结构。第二个that引导定语从句，修饰先行词railway；many foreign experts claimed为插入语。 I was one of the people who came from all parts of China to work on this railway.[2]Taking years to complete，the Qinghai-Xizang Railway is a record⑦ of all of our efforts to overcome the most difficult engineering challenges. [3]How to protect the delicate⑧ ecosystem was among the top concerns⑨. [2]本句为简单句。Taking years to complete为v.-ing短语作状语，take与其逻辑主语the Qinghai-Xizang Railway 之间为主谓关系，故用v.-ing形式。不定式短语to overcome...challenges在句中作后置定语，修饰efforts。 [3]此处为“疑问词＋不定式”结构，在句中作主语。 [4]The first landmark⑩ to catch my eye⑪ is the splendid⑫ Qingshuihe Bridge，the world's longest bridge built over permafrost⑬. Look！A group of Tibetan antelopes⑭ is moving under the bridge，[5]with some stopping to eat grass at their leisure⑮．Thirty-three passages⑯ have been built under the railway to allow the animals to move safely and freely in their natural habitat.Wild animals such as these Tibetan antelopes have now been using these passages for years.They seem totally unaware that we are speeding⑰ past at over 100 kilometres an hour. [4]本句为简单句。因landmark前有序数词first修饰，故此处用不定式短语作后置定语。the world's...permafrost为Qingshuihe Bridge的同位语，其中built over permafrost为过去分词短语作后置定语，修饰bridge，bridge与build之间为逻辑上的动宾关系。 [5]此处为with复合结构，some作宾语；v.-ing短语stopping to eat grass at their leisure作宾补，stop与其逻辑主语some之间为主谓关系。 To prevent damage⑱ to wetlands and grasslands，675 bridges with a total length⑲ of about 160 kilometres were built between Golmud and Lhasa.We even moved 140，000 square metres of wetland to a new area in order to⑳ protect its distinct ecosystem. The journey has been flying by，and before I know it，we have reached Tanggula Station.Located㉑ at over 5，000 metres above sea level，this is the highest railway station in the world.In locations such as this，the thin air，changeable weather㉒ and high levels of UV radiation㉓ presented㉔ perhaps the greatest challenge for railway workers.To make sure㉕ we stayed healthy，several oxygen-making stations were constructed㉖.We were also able to enjoy regular breaks in lower areas. [6]As we pass Cuona Lake, I feel a sense of pride and achievement.Using thousands and thousands of sandbags，we built a twenty-kilometre wall along the lake to protect it from construction waste.[7]Cuona Lake is so close to the railway that I want to reach out㉗ and touch its pale blue㉘mirror-like ㉙ surface. [8]Water birds playing in the lake，and cattle and sheep wandering㉚ the grasslands bring the scenery㉛ to life㉜. [6]as在此引导时间状语从句。 [7]本句中包含“so...that...”结构，引导结果状语从句。 [8]本句为简单句。v.-ing短语playing in the lake和wandering the grasslands在句中作后置定语，分别修饰water birds和cattle and sheep。 The Qinghai-Xizang Plateau㉝ has been attracting people's admiration for centuries.Now，thanks to our efforts，passengers from all over the country have been enjoying these magical landscapes.I am proud that we built our “impossible” railway，and did so with the care that the environment deserves.It truly is an extraordinary “Sky Railway”． ①claim vt.宣称，声称，断言；要求(拥有)，索取，认领 claim to do sth声称做某事 It is claimed that...据说……，据称…… ②race[熟词生义]vi.& vt.(使)快速移动，快速运转 ③steadily adv.平稳地 steady adj.平稳的，稳固的；稳定的；稳步的，持续的 ④massive adj.巨大的 ⑤wind vt.& vi.[熟词生义](路、河等) 蜿蜒，曲折而行，迂回；缠绕，卷缠 wind one's way(指路、河等)蜿蜒前行 ⑥roof of the world世界屋脊(此处使用了比喻的修辞手法，用来指代青藏高原) ⑦record n.[C]记录，记载 ⑧delicate adj.脆弱的 the delicate ecosystem脆弱的生态系统 ⑨among the top concerns最重要的事情之一 concern n.[C]重要的事情；[C，U]忧愁，担心 ⑩landmark n.[C]地标 [构词法]　landmark为“名词＋名词”构成的复合名词。类似的词还有：bookshop(书店)，sunlight(阳光)，classroom(教室)，timetable(时间表)等。 ⑪catch one's eye 引起某人的注意 [拓展]　与“eye”相关的其他搭配：look sb in the eye 正视某人 keep an eye on sb/sth照看某人/某物 have an eye for sth对某物有鉴赏力 ⑫splendid adj.壮丽的 splendid scenery 壮丽的风景 ⑬permafrost n.[U]永久冻土层 ⑭Tibetan adj.西藏的 antelope n.羚羊 Tibetan antelopes藏羚羊 ⑮at (one's) leisure悠闲地；空闲时 leisure n.[U]空闲，闲暇 ⑯passage n.[C]通道，走廊 ⑰speed vi.快速前行 vt.加速，促进 ⑱damage n.[U]损坏，破坏，损失；损害，伤害 ⑲length n.[U，C]长，长度 ⑳in order to以便，为了 ㉑located adj.位于；坐落在 locate vt.把……安置在；找出……的准确位置 location n.[C]地点，位置；[U]定位 ㉒changeable weather 多变的天气 changeable adj.可能变化的，易变的，常变的 ㉓radiation n.[U]辐射 UV(ultraviolet) radiation紫外线辐射 ㉔present vt.[熟词生义] 使发生，使经历 ㉕make sure 确保，保证 ㉖construct vt.建筑，修建，建造 construction n.[U]建筑，建造；[C]建造物 ㉗reach out伸出手去 ㉘pale blue淡蓝色的 pale adj.浅色的，淡色的 ㉙mirror-like adj.如镜面般的 ㉚wander vt.& vi.徘徊，漫游，游荡，闲逛 ㉛scenery n.[U]风景，景色 ㉜bring...to life使……更有趣，使……更生动 come to life变得更有趣(或使人兴奋)，变得活跃；(仿佛活着) 开始动起来(不用于被动语态) ㉝Qinghai-Xizang Plateau青藏高原(世界上海拔最高的高原) 天　路 坐在我的座位上，我简直不敢相信自己将要沿着许多外籍专家声称“不可能”的铁路旅行。火车从西宁出发，全程都在平稳快速地前进。一路上，《天路》这首歌一直在我脑海里萦绕。穿越“世界屋脊”时，“一条条巨龙翻山越岭”这句歌词显得尤为生动。 我是来自中国各地、参与这条铁路建设的人员之一。青藏铁路历时数年建成，记录了我们为克服最为艰巨的工程方面的挑战付出的所有努力。如何保护(这里)脆弱的生态系统是最重要的事情之一。 首先映入我眼帘的地标是壮观的清水河特大桥，它是世界上最长的高原冻土铁路桥。看！一群藏羚羊正从桥下走过，有些则停下来悠闲地吃草。铁路下面修建了33条通道，让这些动物在它们的自然栖息地可以安全、自由地通行。像藏羚羊这样的野生动物使用这些通道已经有很多年了。它们似乎完全没有意识到我们正以每小时100多千米的速度飞驰而过。 为了防止对湿地和草地的破坏，我们在格尔木和拉萨之间修建了675座桥梁，总长约160千米。为了保护此处独特的生态系统，我们甚至将一块14万平方米的湿地迁往一块新的区域。 火车一路疾驰，不知不觉中，我们已经到达唐古拉站。这是世界上海拔最高的火车站，位于海拔5000多米的地方。在这样的地方，稀薄的空气、多变的天气和高强度的紫外线辐射可能是铁路工人面临的最大挑战。为了确保我们的健康，人们建造了多个制氧站。我们也可以定期去海拔低一点的地区休息。 我们经过错那湖时，我有一种自豪感和成就感。当年，利用千千万万个沙袋，我们沿湖筑起了一道长20千米的墙，以保护湖泊免受建筑废料的侵害。错那湖距离铁路如此近，以至于我想伸手触摸它那如镜面般的淡蓝色湖面。水禽在湖里嬉戏，牛羊在草原上漫步，这让此处的风景充满生机。 几百年来，青藏高原一直广受人们的赞叹。现在，由于我们的努力，全国各地的旅客都能欣赏到这些神奇的景致。我为我们建造了世界上“不可能的”铁路而自豪，在这个过程中我们也对环境给予了应有的关注。这的确是一条了不起的“天路”。 [对应学生用书P115] Ⅰ.重点词汇 核心单词 1．delicate adj.脆弱的 2. massive adj.巨大的 3．splendid adj.壮丽的 4．mirror-like adj.如镜面般的 5．wander v.徘徊 拓展单词 6．steadily adv.平稳地→steady adj.稳定的；平稳的 7．leisure n.空闲，闲暇→leisurely adj.悠闲的 adv.悠闲地；从容地 8．radiation n.辐射→radioactive adj.放射性的；有辐射的 Ⅱ.重点短语 1．overcome the challenges克服挑战 2．among the top concerns最重要的情况之一 3．catch one's eye引起某人的注意 4．at one's leisure空闲时 5．bring...to life使……更生动/更有趣 Ⅲ.重点句式 1．现在分词短语作伴随状语 Sitting back in my seat (坐在我的座位上)，I can't quite believe that I'm about to travel along the railway that many foreign experts claimed was “impossible”． 2．疑问词＋to do How to protect the delicate ecosystem (如何保护脆弱的生态系统) was among the top concerns. 3．不定式作后置定语 The first landmark to catch my eye (引起我的注意) is the splendid Qingshuihe Bridge，the world's longest bridge built over permafrost. 4．before引导时间状语从句 The journey has been flying by，and before I know it (不知不觉中)，we have reached Tanggula Station. [对应学生用书P115] Ⅰ.What's the passage mainly about? A．The Qinghai-Xizang Railway is the impossible railway. B．Workers met many difficulties in the process of the Qinghai-Xizang Railway. C．The building of the Qinghai-Xizang Railway and the challenges it met. D．The Qinghai-Xizang Railway is the one we should be proud of. 答案　C Ⅱ.Read the passage and fill in the blanks. Read the text carefully and then choose the best answer. 1．Why was the “Sky Railway” considered to be impossible? A．Because it was built in a place with too much radiation. B．Because it was extremely difficult to build this railway. C．Because too many bridges had to be built along the railway. D．Because it was not easy to protect the workers. 2．What did the railway workers consider most? A．How to protect the ecosystem along the railway. B．Their own safety while building the railway. C．The great number of bridges along the railway. D．Grasslands and wetlands along the railway. 3．What's the purpose of building Qingshuihe Bridge? A．To prevent trains from falling into the river. B．To protect wetlands and grasslands. C．To allow the animals to move safely and freely. D．To protect permafrost and grasslands. 4．What can we know about Tanggula Station from this text? A．It is the biggest station of the whole railway. B．All the railway workers take their breaks here. C．Travellers usually breathe in some oxygen here. D．There exists high levels of UV radiation. 答案　1—4　BACD 1．Sitting back in my seat，I can't quite believe that I'm about to travel along the railway that many foreign experts claimed was “impossible”． [句式分析] 句中Sitting back in my seat为现在分词短语作伴随状语，主句中的“that I'm about to...‘impossible’”为that引导的宾语从句，在此从句中“that many foreign...‘impossible’”为that引导的定语从句。 [翻译]　坐在我的座位上，我简直不敢相信自己将要沿着被许多外籍专家声称“不可能”建成的铁路旅行。 2．To prevent damage to wetlands and grasslands，675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa. [句式分析] 本句是一个复杂的简单句。“To prevent...grasslands”为动词不定式短语作目的状语，with a total length of about 160 kilometres为介词短语作定语，between Golmud and Lhasa为介词短语作地点状语。 [翻译]　为了防止对湿地和草地的破坏，我们在格尔木和拉萨之间修建了675座桥梁，总长约160千米。 [对应学生用书P117] [核心词汇·练透] overcome the challenges克服挑战 (1)challenge sb to (do) sth　向某人挑战(做)某事 face a challenge　面对挑战 accept/take up a challenge　接受挑战 (2)challenging adj.　有挑战性的 [教材原句]Taking years to complete，the Qinghai-Xizang Railway is a record of all of our efforts to overcome the most difficult engineering challenges. 青藏铁路历时数年建成，记录了我们为克服最为艰巨的工程方面的挑战付出的所有努力。 [练通]——单句语法填空/ 补全句子 (1)After graduation I decided to work as a teacher in a local school.It was really a challenging and rewarding career and I felt challenged in the first few months.(challenge) (2)I once took up/accepted a challenge(接受挑战) to create a painting every day for a month and post the works online.(2024·新课标Ⅱ卷) (3) However serious a problem you may have，you should gather your courage to face the challenge(面对挑战) and never give up. among the top concerns最重要的事情之一 (1)concern n.　担心；关爱 v.关于；涉及；　使……担心 show concern for...　对……表示关心 concern oneself about/for...　关心…… (2)concerned adj.　关切的；担心的 be concerned about/for...　关心…… [教材原句]How to protect the delicate ecosystem was among the top concerns. 如何保护(这里)脆弱的生态系统是最重要的事情之一。 [练通]——单句语法填空/ 词汇升级 (1)What does the last paragraph mainly talk about concerning (concern) emotional intelligence? (2)People nowadays are very concerned for/about the problems concerned with environmental pollution. be concerned with...　和……有关，涉及…… as/so far as...be concerned　就……而言 (3)In my opinion，students should do more listening and speaking so that they can develop their communication skills. →As far as I am concerned，students should do more listening and speaking so that they can develop their communication skills. catch one's eye引起某人的注意 keep an eye out/open (for)　密切注意，提防，警觉 keep an eye on　照看；留意 have an eye for...　对……有鉴赏力 look sb in the eye(s)　直视/正视某人 fix one's eyes on　注视，盯着看 shut/close one's eyes to...　对……视而不见 in sb's eyes　依某人看 [教材原句]The first landmark to catch my eye is the splendid Qingshuihe Bridge，the world's longest bridge built over permafrost. 首先映入我眼帘的地标是壮观的清水河特大桥，它是世界上最长的高原冻土铁路桥。 [练通]——单句语法填空/ 补全句子/ 完成句子 (1)I never worried about my son while I was away because my mother kept an eye on him and took good care of him. (2)We shouldn't shut our eyes to the fact that the air in this city has been seriously polluted. (3)He was walking in the park when a massive cloud caught his eye (映入眼帘). (4)他一直盯着坐在角落的那个男孩，感觉好像有事要突然发生。 He fixed his eyes on the boy sitting at the corner as if something would suddenly happen.(续写佳句之动作描写) wander vt.& vi.徘徊；漫游；漫步；游荡，闲逛 vi.走神；胡思乱想 wander about/around　闲逛；漫游；漫步；流浪 wander about/over the world　周游世界 wander from the point　偏离主题 [教材原句]Water birds playing in the lake，and cattle and sheep wandering the grasslands bring the scenery to life. 水禽在湖里嬉戏，牛羊在草原上漫步，这让此处的风景充满生机。 [练通]——单句语法填空/ 完成句子 (1)The lost child was last spotted wandering (wander) in the street with a bag on his back. (2)He wandered around/about the Great Pyramid — one of the Seven Wonders of the World，wondering (wonder) how it came into being. (3)大卫正独自在街上闲逛，这时有人拍了拍他的肩膀，当他转过身时，看见他的老朋友正对着他笑。 David was wandering in the street alone when someone patted him on the shoulder，and when he turned around，he saw his old friend smiling at him.(续写佳句之动作描写) bring...to life使……更生动；使……苏醒过来 come to life　苏醒过来；活跃起来；变得生动有趣 save one's life　拯救某人的生命 give life to...　赋予……生命/活力 lose one's life　丧生，失去生命 risk one's life　冒着生命危险 full of life　充满活力；充满生机 live/lead a．..life　过着……的生活 [教材原句]Water birds playing in the lake，and cattle and sheep wandering the grasslands bring the scenery to life. 水禽在湖里嬉戏，牛羊在草原上漫步，这让此处的风景充满生机。 [练通]——补全句子/ 完成句子 (1)Street music gives life to (赋予活力) everyone who listens and offers relief from the cares of the day. (2)The discussion came to life (活跃起来) after the teacher entered the classroom. (3)为了过上更好的生活，我们需要正能量来克服我们面临的挑战和困难。 Life is always full of hardships.To live/lead a better life，we need positive energy to overcome the challenges and difficulties we face.(续写佳句之主旨升华) [重点句型·通关] 疑问词＋to do “疑问词＋动词不定式”结构： (1)常见的疑问词：疑问代词who，what(无选择范围)，which(有选择范围) 等和疑问副词how，when，where等。 (2)语法功能：在句中可以作主语、宾语、表语、同位语等。作主语时，谓语动词常用单数形式。 (3)其功能相当于一个名词性从句，可以用对应的从句来替换。 [教材原句]How to protect the delicate ecosystem was among the top concerns. 如何保护(这里) 脆弱的生态系统是最重要的事情之一。 [练通]——单句语法填空/ 完成句子 (1)In the face of challenges，the most important thing is to decide how to keep(keep) going instead of giving up easily.(应用文之演讲稿) (2)许多学生正面临的问题是如何高效利用课余时间，来提高自己的学业成绩。 The problem that many students are facing is how to make efficient use of their spare time to improve their academic performance. (3)我真的不知道该不该接受她的邀请。这对我来说是个艰难的决定，所以我想请你给我一些建议，告诉我该怎么做。 I really have no idea whether to accept her invitation or not．It's a difficult decision for me to make，so I want you to give me some advice on what to do．(应用文之求助信) before引导时间状语从句 (1)before作连词引导时间状语从句时，在句中的译法很灵活。通常有以下含义：在……之前；……之后才……；不多久就…… (2)before构成的句型主要有： It was/will be＋时间段＋before... 多长时间后就/才…… It wasn't/won't be＋时间段＋before... 不久就/才…… It was not long before＋从句　不久就…… It will not be long before＋从句 不久就会……(从句用一般现在时) (3)It be＋一段时间＋since... 自从……(到现在) 有多长时间了 [教材原句]The journey has been flying by，and before I know it，we have reached Tanggula Station. (火车) 一路疾驰，不知不觉中，我们已经到达唐古拉站。 [练通]——单句语法填空/ 完成句子 (1)In the race to document the species on Earth before they go extinct，researchers and citizen scientists have collected billions of records.(2024·新课标Ⅰ卷) (2)Has it been a while since your last visit to a public library? (3)没过多久简就意识到她在一个陌生的森林里迷路了，这使她如坐针毡。 It wasn't long before Jane sensed that she got lost in a unfamiliar forest，which made her feel like sitting on pins and needles.(续写佳句之心理描写) (4)时间过得真快！一个星期后你就要回到你自己的国家。我希望你能记住我们共同度过的美好时光以及建立的友谊。 How time flies！It will be a week before you go back to your own country.I hope you will remember the good times we have shared，and the friendships we have established.(应用文之告别信) [对应学生用书P120] Ⅰ.教材语块必备 1．put sth into operation 使某物开始工作 2．pass by 经过；(时间) 过去 3．roof of the world 世界屋脊 4．all parts of China 中国各地 5．work on 从事于；致力于 6．natural habitat 自然栖息地 7．wild animals 野生动物 8．fly by 时间飞逝 9．sea level 海平面 10．a sense of pride and achievement 自豪感和成就感 Ⅱ.单词拼写/完成句子 1．I was impressed with the splendid (壮丽的) view while visiting the Forbidden City. 2．Massive (巨大的) amounts of information are available because of the current policy to promote the free flow of speech. 3．The New Year is a holiday for many people.It is a day of leisure (闲暇) and celebrations. 4．How to improve English (如何提高英语水平) is often discussed among the students. 5．Someone called me up in the middle of the night，but he hung up before I could answer the phone (还没来得及接). [对应学生用书P120] 自然场景描写 Ⅰ.常用词汇 课文词汇 1．travel along the railway沿着铁路旅行 2．wind among the mountains翻山越岭 3．the longest bridge built over permafrost 最长的高原冻土铁路桥 4．in their natural habitat在它们的自然栖息地 5．touch its pale blue mirror-like surface 触摸它那镜面似的浅蓝色湖面 补充词汇 6．come out盛开 7．wave at us to the wind迎风向我们招手 8．beyond description/words难以用语言表达 9．the wonder and the greatness of nature 大自然的奇妙和伟大 10．crunch嘎吱作响 11．create a magic scene创造一个神奇的场景 12．break through the clouds穿云而过 13．bathe the mountains in golden light 使大山沐浴在金色的阳光里 14．the feathery snowflakes羽毛般的雪花 Ⅱ.常用句型 课本原句 1．The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”． 当火车开过“世界屋脊”时，“一条条巨龙翻山越岭”的歌词变得更加生动鲜活起来。 2．A group of Tibetan antelopes is moving under the bridge，with some stopping to eat grass at their leisure. 一群藏羚羊正从桥下走过，有的则停下来悠闲地吃草。 3．Water birds playing in the lake，and cattle and sheep wandering the grasslands bring the scenery to life. 在湖面上嬉戏的水鸟，在草原上游荡的牛羊，让这片风景充满勃勃生机。 其他表达 4．On arriving there，I was attracted by the fantastic scenery of nature. 一到那里，我就被迷人的自然景色所吸引。 5．In the west of the city stands a tower，from where you can get a wonderful bird view of the whole city. 城市的西方有一座塔，从那里你可以鸟瞰整个城市。 6．Bathed in the sunshine and delighted by fantastic scenery，we headed for the destination. 沐浴在阳光下，享受着美丽的风景，我们向目的地出发了。 Ⅲ.写作微练 1．漫步街头，树叶在我脚下嘎吱作响。偶尔，有叶子会从我身边掉落，在微风中轻轻摇摆。 The leaves crunched beneath my feet as I strolled down the street.Occasionally，one would fall past me，lightly swaying in the breeze. 2．一切都那么平静安详，棕色的岩石、深绿的松树和傍晚的阳光混在一起，形成了一种神奇的景色。 It was so peaceful and quiet and the colour of the brown rocks，the deep green pine trees，and the late afternoon sun mixed to create a magic scene. 学科网（北京）股份有限公司 $