必修第一册 Unit 5 Into the wild 课时精讲（教用Word）-【精微方案】2027年高考一轮总复习讲义·英语（外研版）

该高中英语讲义聚焦高考核心考点，整合词汇（基础、培优、拔高分层）、词形转换、短语搭配、核心句型（定语从句、同位语从句、the+比较级结构等）及写作模块，按“词汇-语法-应用”逻辑递进。通过考点梳理、方法指导（如词汇记忆策略）、真题训练（高考真题语法填空、写作）环节，帮助学生系统构建知识网络，突破难点。 资料以分层教学和语境化训练为特色，如分层词汇设计适配不同学生需求，场景微续写结合情感描写词汇提升语言运用能力。融入2024-2025年高考真题实例，通过应用文写作（保护濒危动物宣传）和读后续写训练，培养学生语言能力与思维品质，为教师精准把控复习节奏、学生高效提升应考能力提供有力支持。

1．charity n．慈善机构，慈善团体 2．Atlantic adj.大西洋的 3．migration n．迁徙 4．migrate v．移栖，迁徙 5．professor n．教授 6．mystery n．难以理解的事物，谜 7．crash v．暴跌 8．per cent n．百分比 9．chemical n．化学品 10．creature n．生物，动物 11．idiom n．习语，成语 12．authority n．当权，权力 13．photographer n．摄影师 14．button n．按钮 15．encounter n．意外的相遇，邂逅 16．breathtaking adj.令人惊叹的 17．eagle n．鹰 18．capture v．(用文字或图片)记录，捕捉 19．image n．图像，影像 20．file n．档案，文件 1.seek v．寻找，寻求 2．measure v．量，测量 3．position n．位置 4．destroy v．破坏，毁掉 5．source n．来源，出处 6．found v．创立，创建 7．element n．基本部分，要素 8．variety n．多样化，变化 9．path n．小径，小道 10．stare v．凝视，盯着看 1.annual adj.一年一度的，每年的→annually adv.一年一度地，每年地 2．determine v．测定，确定；决定→determined adj.坚决的；有决心的→determination n．决心；决定；测定 3．eventual adj.最后的，最终的→eventually adv.终于，最终 4．solve vt.解决，处理→solution n．解决，解决方法 5．amaze v．使惊奇，使惊讶→amazing adj.惊人的，了不起的→amazed adj.惊奇的，惊讶的→amazement n.惊奇，惊诧 6．survive v．活下来，幸存→survival n．幸存；残存物→survivor n．幸存者，生还者 7．effect n．影响，结果→effective adj.产生预期结果的；有效的 8．accommodate v．为(某人)提供住宿(或膳宿、座位等)；容纳→accommodation n．住处，工作场所 9．recover v．(从糟糕经历中)恢复→recovery n．恢复 10．shock n．吃惊，震惊→shocking adj.令人震惊的，惊人的→shocked adj.感到震惊的 11．concentrate v．专注，专心→concentration n．专心→concentrated adj.集中的；决心要做的；全力以赴的 12．freeze v．突然停止，呆住→freezing adj.极冷的；冰冻的→frozen adj.冷冻的；冻僵的 13．react v．(对……)作出反应，回应→reaction n．(对某一情形或事件的)反应 1.manage to do设法做成 2．the solution to ……的解决方法 3．cut down砍倒；减少 4．rain cats and dogs下倾盆大雨 5．brave the elements不顾天气恶劣，冒着风雨 6．be famous/known for因……而出名 7．at a speed of以……的速度 8．concentrate on把注意力集中于，全神贯注于 9．recover from从……中恢复 10．show respect to对……表示尊重 11．after all毕竟，终究 1．Sadly, human activity is the main reason why the number of monarch butterflies is falling.(why引导定语从句) 不幸的是，人类活动是黑脉金斑蝶数量下降的主要原因。 2．The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.(the＋比较级．.., the＋比较级．..) 我们对这种可爱的生物了解得越多，它生存的机会以及在很长一段时间内保持它在自然界中的地位的机会就越大。 3．While I was concentrating on photographing this amazing scene, I suddenly had a feeling that I was being watched.(同位语从句)　我正专注于拍摄这个令人惊叹的场景时，突然有一种被注视着的感觉。 4．It is after all we who are the visitors to their world.(强调句型)　毕竟，我们才是它们世界的访客。 [基础词汇] 1．species n．物种 2．reproduce v．繁殖 3．extinct adj.灭绝的；绝种的 4．preservation n．保存；保护 5．be native to 原产于 6．natural reserve 自然保护区 7．maintain the biodiversity 维护生物多样性 8．raise people's awareness of animal protection 提高人们的动物保护意识 [培优词汇] 1．breed vi.交配繁殖 2．reptile n．爬行动物 3．mammal n．哺乳动物 4．jungle n．丛林 5．continent n．大陆 6．cliff n．悬崖 7．towering adj.高大的；高耸的 8．limpid adj.清澈的 [拔高词汇] 1．prey n．猎物；受害者 vt.捕食；欺凌 2．brutality n．残忍；野蛮 3．stealthily adv.暗地里；鬼鬼祟祟地 4．intruder n．闯入者；侵入者 5．flock n．(羊或鸟)群；一大群 6．inhabitant n．居民；栖息动物 7．excessively adv.过于；过多地 8．snatch vt.强夺；攫取；偷窃 9．take a hit遭到破坏；承受打击 话题句型 1.Animals are part of nature. They can't be separated from us. If we want to live happily, we must keep the balance of nature.　动物是自然界的一部分，不能将它们与我们分开。如果我们想要生活得开心些，我们就必须保持自然界的平衡。 2．With the fast development of human society, the environment is seriously damaged and wild animals are losing their habitats.　随着人类社会的快速发展，环境遭到严重破坏，野生动物正在失去它们的栖息地。 名词或形容词后缀-al：(1)动词＋-al→抽象名词，表示“人、物、行为或结果”；(2)名词＋-al→形容词，表示“属于……的”或“具有……性质的”。 [写出句中加黑词的词性及含义] 1．(2025·新高考全国卷Ⅰ)Moving goods and people around the world is responsible for a large part of global CO2 emissions (排放).adj.全球的 2．(2025·新高考全国卷Ⅰ)We hope to present the rather abstract Go game and AI in a visual context, and initiate dialogues with minimalist art, conceptual art and expressionism.adj.视觉的，可视化的；adj.概念的 3．(2025·新高考全国卷Ⅰ)Caroline Gauchotte-Lindsay，an environmental engineer at the University of Glasgow in Scotland who was not involved in the research，tells New Scientist.adj.环境的 4．The bill is passed by the parliament, but it still needs the president's formal approval to become law.n.同意，赞成 5．The child's refusal to eat vegetables worried his parents, so they tried making vegetable-based snacks.n.拒绝 seek　v.寻找，寻求；请求；试图 [单句语法填空/微写作] ①(人教选必三U1)He sought to show(show) not just the outer image of his subjects, but their inner warmth and humanity as well. ②The shopkeeper is trying to seek for a better way to win his customers back, perhaps with a discount. ③在我看来，当我们有麻烦时，我们应该向我们最信任的人寻求帮助。 In my opinion, when in trouble, we should seek help from those we trust most． [应用文写作之建议信] seek to do sth.　　　 试图做某事 seek...from sb. 向某人寻求…… seek out 找出；搜出 seek for/after 寻找/追求 seek one's fortune 寻找致富之路；碰运气 [佳句背诵] In the 19th century, many people left their hometown and went to America to seek their fortune.　在19世纪，许多人离开家乡前往美国寻找致富的机会。 [联想发散] 表示“寻找”的短语还有look for、search for、 hunt for、 in search of等。 measure　v.量，测量；评估；有……长(或宽、高等)　n．措施；度量单位；尺寸 [单句语法填空/微写作] ①(人教选必三U3)Governments need to consider making policies and taking appropriate actions and measures to reduce(reduce) greenhouse gas emissions. ②(译林必修一U3)I'll always value these qualities of a good friend and try to measure myself by these standards as our friendship develops. ③我们真诚地希望能够采取有效措施来保护这种濒临灭绝的物种免遭灭绝。 We sincerely hope that effective measures can be taken to protect this endangered species from dying out．(被动语态)[应用文写作之倡议书] (1)measure...by...　 用……来衡量…… (2)take measures to do sth. 采取措施做某事 make sth. to sb.'s measure 按照某人的尺寸做某物 (3)measurement n. 测量；尺寸；衡量 [佳句背诵] The Great Wall measuring more than 21，000 kilometers long is known as a symbol of the Chinese nation's perseverance and wisdom. 长逾2.1万公里的长城被誉为中华民族坚韧不拔和智慧的象征。[应用文写作之传统文化] determine　v.测定，确定；决定，决心 [单句语法填空/语段写作] ①(2025·新高考全国卷Ⅱ)Determined(determine) to turn her life around, Ms Donohue began to work out and follow a healthy lifestyle, before discovering a passion for weightlifting. ②带着坚定的眼神，我决心勇敢地面对困难，这使我在写作比赛中获得了第一名。直到那时，我才意识到没有什么比决心和勇气更重要。 With a determined look in my eyes, I determined to face/was determined to face difficulties bravely, making me win the first prize in the writing contest. It was not until then that I was aware that nothing was more important than determination and courage．[读后续写之心理描写] (1)determine on/upon　　 决定 determine to do sth. 决定做某事 be determined by... 由……决定 (2)determined adj. 坚决的；有决心的 be determined to do sth. 决心做某事(表示状态) (3)determination n. 决心；决定；测定 with determination 坚决地 [佳句背诵] She loved soccer with all her heart, and she was determined not to give up. Though her face would be sweaty and dirty, her eyes would shine with determination. 她全心全意地热爱足球，并且下定决心不放弃。尽管她的脸上会满是汗水和污渍，但她的眼睛会因决心而闪闪发光。[读后续写之情感描写] amazing　adj.惊人的，了不起的；令人诧异的 [单句语法填空/补全句子/句式升级] ①(2025·新高考全国卷Ⅱ)It's amazing(amaze) how you can adapt and learn in a new environment. ②(2024·新高考全国卷Ⅰ)He tried acupuncture, an ancient Chinese practice, and was amazed(amaze) that he improved after two or three treatments. ③(2024·新高考全国卷Ⅰ满分作文)To my amazement(令我惊讶的是), Gunter allowed me to go without paying for the taxi fare and I bowed, turned around and sprinted to the bus. →What amazed me/made me amazed was that Gunter allowed me to go without paying for the taxi fare and I bowed, turned around and sprinted to the bus.(what引导主语从句) (1)amaze vt.　　　　　　 使惊奇，使惊讶 (2)amazed adj. 惊奇的，惊讶的 be amazed by/at... 对……感到惊奇 be amazed to do sth. 吃惊地做某事 (3)amazement n. 惊奇，惊讶 in amazement 惊奇地 to one's amazement 令某人惊奇的是 [佳句背诵] I was amazed to find that those around me were staring at me. Amazed and embarrassed, I felt as if all the air were frozen.　我惊奇地发现周围的人都在盯着我看。我既惊讶又尴尬，觉得空气都凝固了。[读后续写之情感描写] survive　v.活下来，幸存；生存；设法对付 [单句语法填空/微写作] ①(人教必修一U4)Everywhere survivors(survive) looked, there was nothing but ruins. ②(译林必修三U4)Thanks to her discovery of qinghaosu, malaria patients all over the world now have had a greatly increased chance of survival(survive). ③生活不在于如何从暴风雨中幸存；而在于学会在雨中翩翩起舞。 Life isn't about how to survive the storm; it's about learning to dance in the rain.[读后续写之主旨升华] (1)survive from...　　 从……幸存 survive on... 依靠……生存 survive...by... 比……多活…… (2)survival n. [U]幸存；[C]残存物 survivor n. 幸存者，生还者 [佳句背诵] Human life is regarded as part of nature and, as such, the only way for us to survive is to live in harmony with nature. 人类生活被认为是自然的一部分，就这一点而论，我们生存的唯一方式就是与自然和谐相处。 [名师点津] survive表示“幸免于难”时，是及物动词，其后不需要加介词in或from。 concentrate　v.专注，专心 [单句语法填空/句型转换] ①(人教必修一WELCOME UNIT)The lab is new and the lesson was great, but the guy next to me tried to talk to me the whole time. I couldn't concentrate on the experiment. ②Exercise is a great way to reduce pressure. Doing some exercise every day will also improve your powers of concentration(concentrate). ③If you concentrate your mind on what you are doing, you will definitely make great progress sooner or later. →Concentrating your mind on what you are doing, you will definitely make great progress sooner or later.(现在分词短语作状语) →With your mind concentrated on what you are doing, you will definitely make great progress sooner or later.(with复合结构)[应用文写作之建议信] (1)concentrate (one's attention/efforts/mind) on/upon (doing) sth.　 专注于(做)某事 (2)concentration n. 集中；专心；专注 (3)concentrated adj. 集中的 [佳句背诵] (1)She tried to concentrate her attention on the lecture, but her mind kept wandering to the upcoming exam. 她努力把注意力集中在讲座上，但她的脑子一直在想着即将到来的考试。[读后续写之心理描写] (2)Take some water and sweets with you if it is allowed. They can provide a way to regain your concentration with a quick break.　如有可能，随身带些水和糖果。它们能让你短暂放松以重新集中注意力。 cut down　砍倒；削减；减少；缩小 [单句语法填空/微写作] ①(2025·新高考全国卷Ⅰ)They've cut down on the number of news programs, and the number of documentaries. All have been replaced by these stupid reality shows, and game shows, you know. ②(人教必修一U3)Rather than cutting out the foods I enjoyed, I added healthy foods to my meals. ③(人教必修二U2)Billions of trees are being cut down every year to make paper for humans. ④暴风雨导致电力意外中断，电梯在5楼被困了半小时。我们又焦虑又烦躁，不停地查看手机信号想求救。 The electricity was cut off unexpectedly due to a storm, leaving the elevator stuck on the 5th floor for half an hour. We felt anxious and restless, constantly checking our phones for signal to call for help. [读后续写之情绪描写] cut down on　 减少，缩减 cut up 切碎；齐根切掉 cut in 打断(谈话)；插嘴 cut out 剪下；停止；删除，去除 cut off 切断；中断(供给或通话)；隔绝 [佳句背诵] Many trees are being cut down, many animals are being hunted, and our environment is being destroyed. Shouldn't we take measures to make a difference? 许多树木正在被砍伐，许多动物正在被猎杀，我们的环境正在被破坏。难道我们不应该采取措施做出改变吗？[应用文写作之发言稿] the＋比较级．.., the＋比较级... [教材原句] The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come. 我们对这种可爱的生物了解得越多，它生存的机会以及在很长一段时间内保持它在自然界中的地位的机会就越大。 [单句语法填空/语段写作] ①(人教必修二U3)He or she may also post embarrassing photos and information about those people. However, the more polite(polite) you are, the less likely it is you will be attacked. ②(2024·全国甲卷满分作文)从图片上看，中国的交通变得越来越先进了。交通方式越多，中国人的生活就会越方便。 Judging from the pictures, Chinese transport has become more and more advanced. The more means of transportation, the more convenient Chinese people's life will be． [应用文写作之图画作文] (1)“the＋比较级(＋主语＋谓语)，the＋比较级(＋主语＋谓语)”意为“越……，就越……”，表示后者随着前者的变化而变化； (2)“比较级＋and＋比较级”意为“越来越……”，表示本身程度的变化。 [佳句背诵] (1)The more she thought about this, the more frightened she felt, her palms sweating and her heart pounding wildly. 她越想这件事，就越感到害怕，手心在冒汗，心跳得厉害。[读后续写之心理描写] (2)If everyone contributes a bit, our earth will be better and better. 如果每个人都贡献一点，我们的地球将会越来越好。[应用文写作之倡议书] 单句语法填空/补全句子/完成句子 1．(译林必修三U4)It was hard to produce enough qinghao extract for large trials because research resources were limited. Tu and her team managed to find solutions(solve) to the problem. 2．(2025·浙江卷1月)Building effective communication skills takes time, but the effects are worth the effort. (effect) 3．(2024·浙江卷1月读后续写)In her first P．E.class, Eva was shocked(shock) when Coach Pitt announced that everyone had to run one mile around the track outside. 4．After the successful surgery, the patient is making a miraculous recovery(recover). 5．With the help of the local charity, they eventually managed to rescue(rescue) the seriously injured whale. 6．Polar bears depend on frozen(freeze) salt water called sea ice to help them hunt seals for food. 7．The elderly mother sits in the armchair, staring(stare) at the family picture on the wall quietly. 8．We are supposed to have a better understanding of the human-animal relationship and show respect to/for nature. 9．If you have rooms to rent, can you provide accommodation for(为……提供住宿) our students visiting the city for the first time? 10．如今越来越多的学生选择在课堂之外通过各种各样的方式学习英语，从听英语歌曲到访问英语学习网站等。 Nowadays an increasing number of students are choosing to learn English beyond the classroom in various/a variety of/varieties of ways, varying from listening to English songs to visiting English learning websites． 提能一　语境辨词专练 1．猜测句中加黑词的词性及含义 (1)(2023·浙江卷1月)Most long-distance trains, especially the sleeping car accommodations, sell out very quickly.n.铺位 (2)(人教必修三U5)I don't want your charity. I just want a job that earns an honest income.n.施舍(物) (3)Hold the yoga position for five breaths to improve your balance.n.姿势 (4)No matter how unpredictable the future is, there's almost always some measure of joy to be got from the moment.n.(一定的)量 (5)My heart froze in my chest as I saw the tractor heading towards the motorway.v.(因害怕等)停住不动，僵住 2．选出crash的词性及含义 A.v.(交通工具)碰撞　 B．v.撞击(某物)发出声响 C．v.(计算机等)崩溃 D．v.倒头就睡 (1)She stormed out of the room and crashed the door shut behind her. B (2)A speeding car failed to stop and crashed into a tree by the road this morning. A (3)He was so tired that he crashed onto the sofa as soon as he got home from work. D (4)The old computer suddenly crashed while I was typing an important work document.C 3．选出image的词性及含义 A．n.影像；图像　　　　B．n.意象，比喻C．n.形象，声誉 (1)(2024·新高考全国卷Ⅰ)To improve the quality of observational data, biodiversity apps can also encourage users to have an expert confirm the identification of their uploaded image．A (2)Lots of bad behavior still exists in our school, which does great harm to the image of our school.C (3)In the poem, the image of a “broken mirror” symbolizes the end of a relationship.B 提能二　应用文写作(保护濒危动物的宣传活动) 假定你是李华，是某国际高中野生动物保护协会的学生。协会计划下周举办一场关于保护濒危动物的宣传活动。请你用英语写一则通知，内容包括： 1．活动目的；2.活动时间、地点；3.活动内容。 NOTICE Aiming to raise people's awareness of protecting endangered animals, we will organize a promotional event at the Student Center next Monday. The event will focus on(用本单元所学词汇替换黑体词：1.concentrate on) various activities for engaging participants in wildlife preservation. Most importantly, we will invite some well-known experts to hold informative lectures as well as interactive workshops to fully showcase the importance of protecting endangered species. We warmly expect teachers and students of our school to join us in this significant event. 2.After all(毕竟), 3.the more people determined to take measures to save wild creatures from extinction, the more positive effects we will have on their survival(越多的人决心采取措施拯救野生动物免于灭绝，我们对它们的生存就会产生越多的积极的影响；the＋比较级．.., the＋比较级．..). Wildlife Conservation Association 提能三　场景微续写(爱猫失而复得的喜悦) ——有效强化教考衔接 词汇积累 [情感描写]　amazing, shock [动作描写]　seek, determine, concentrate, hold your horses, stare, brave the elements, encounter, survive, freeze [环境描写]　rain cats and dogs, path, breathtaking 佳句积累 [动作＋环境描写]　When I finally stepped out of the trees, the view was breathtaking. [情感＋动作描写]　While I was concentrating on photographing this amazing scene, I suddenly had a feeling that I was being watched. Slowly, and with the camera still held to my eye, I turned...and froze. [动作描写]　Time stood still as the bear and I both waited to see who would move first. My legs started shaking. [主旨升华]　My most frightening but magical experience was now captured forever in a single image. ——情感描写：喜悦与快乐(二) 经典词汇 1.glad adj.高兴的 2．giggle v. & n．咯咯笑 3．cheer n．欢呼声；欢乐的气氛→cheerful adj.快乐的；高兴的 4.joy n．高兴；喜悦→joyful adj.高兴的 5．happy adj.高兴的→happily adv.高兴地→happiness n．快乐，幸福 6．merry adj.高兴的→merrily adv.高兴地 靓点词块 1.a sense/wave of joy and happiness sweeps/floods over sb.一种/阵喜悦和幸福感席卷某人 2．be seized by joy/be overcome with happiness非常高兴 3.in high/cheerful spirits兴高采烈 4．beam with smiles笑逐颜开 5．laugh heartily哈哈大笑 6．a mixture of excitement and delight既兴奋又开心 出彩表达 1.Hearing the good news, he jumped up and down with joy. 听到这个好消息，他高兴得跳上跳下。 2．When the mother kissed the baby on the cheek, his bright smile lit up the whole room.(夸张) 当母亲亲吻婴儿的脸颊时，他灿烂的笑容照亮了整个房间。 3．The smile on her face shone like a diamond.(比喻)　她脸上的笑容像钻石一样闪闪发光。 4．A flood of joy/pleasure welled up in him.(无生命名词作主语)　喜悦涌上他的心头。 5．He was in high spirits, feeling on top of the world.(现在分词短语作状语)　他情绪高涨，感到极其幸福。 ——积累内化应用提升 [场景呈现]　小猫失而复得，“我”怀着喜悦的心情抱它回家。 第一步　完成句子 1．突然，一只瘦骨嶙峋的白猫出现在眼前，我惊呆了。 Suddenly, a white skinny cat came into sight and I froze in shock． 2．一想到那可能是我走失的猫，我几乎抑制不住自己的喜悦，快步走上前，跪下身子，仔细盯着那只猫，以便看得更清楚些。 At the thought that it might be my lost cat, I could hardly contain my joy. I hurried forward, knelt down, and stared at the cat carefully to get a better look.(动词的联动) 3．结果证实那正是我失散已久的猫，一种快乐和幸福的感觉席卷了我。 It turned out to be my long-lost cat and a sense of joy and happiness swept over me．(无生命名词作主语) 4．那只猫听到我叫它的名字，高兴地朝我喵喵叫。 Hearing me calling its name, the cat mewed at me merrily/happily．(现在分词短语作状语) 5．怀里抱着我的猫，我像一只快乐的小鸟一样哼着歌、蹦蹦跳跳地往家走。 With my cat in my arms, I hummed and skipped towards my home like a happy bird．(比喻) 6．我情绪高涨，感到极其幸福。 I was in high spirits, feeling on top of the world．(现在分词短语作状语) 第二步　连句成文 _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ One possible version： Suddenly, a white skinny cat came into sight and I froze in shock. But at the thought that it might be my lost cat, I could hardly contain my joy. I hurried forward, knelt down, and stared at the cat carefully to get a better look. It turned out to be my long-lost cat and a sense of joy and happiness swept over me.Hearing me calling its name, the cat mewed at me merrily/happily. With my cat in my arms, I hummed and skipped towards my home like a happy bird.I was in high spirits, feeling on top of the world. [选自：选修教材　人教版·选修一(新教材)　UNIT 1 P10] The Grand Canyon① of the Colorado is a canyon composed of② many canyons. It is a complex mix of thousands, of tens of thousands, of gorges③. In a similar manner④， each wall of the canyon is a wall composed of many walls⑤. Every one of these gorges is a world of beauty in itself. Yet all these canyons unite to form one grand canyon, the most gorgeous spectacle⑥ on earth⑦. The carving of the Grand Canyon is the work⑧ of rains and rivers. When a shower⑨ comes in this land, the streams carve canyons—but a little at each storm; and though storms are far apart⑩ and the heavens above are cloudless for most of the days of the year, still, years are plenty in the ages, and an occasional⑪ stream called to life by a shower can do much work in centuries of centuries. ①canyon n．峡谷 ②(be) composed of由……构成 ③gorge n．峡谷 ④in a similar manner以类似的方式 ⑤此处为过去分词短语作后置定语 ⑥spectacle n．壮观的景象 ⑦此处为同位语 ⑧work (常用义) v．工作 (文章义) n．工作成果；作品 ⑨shower (常用义) n．& v．沐浴 (文章义) n.阵雨 ⑩far apart相距甚远 ⑪occasional adj.偶尔的 1．What is the composition of the Grand Canyon of the Colorado? The Grand Canyon of the Colorado is composed of thousands or even tens of thousands of gorges. 2. What does the underlined sentence in paragraph 2 mean? Explain it in your own words. Rains and rivers are the natural forces that formed the Grand Canyon gradually. 【识文知意】　科罗拉多大峡谷是一个由许多峡谷组成的大峡谷。它是由成千上万条峡谷复杂交织而成的。同样地，大峡谷的每一面墙都是由许多墙壁构成的。这些峡谷中的每一个都是一个美丽的世界。然而，所有这些峡谷结合在一起，形成了一个宏伟的大峡谷，这是地球上最壮丽的奇观。 大峡谷的雕刻是雨水和河流的作品。当这片土地迎来一场阵雨时，溪流便开始雕刻峡谷——但每次暴雨只能雕刻一点点；尽管暴风雨相隔甚远，而且一年中大部分时间天空都是无云的，但在漫长的岁月中，(下雨的)年份是很多的，一场偶然的阵雨会唤醒的溪流在成千上万年里可以发挥很大的作用。 学科网（北京）股份有限公司 $