文章来源：
四季读书网
版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容， 请发送邮件至23467321@qq.com举报，一经查实，本站将立刻删除;如已特别标注为本站原创文章的，转载时请以链接形式注明文章出处，谢谢！
高考英语写作|50句高阶功能句式及语用功能解析
9
0
高考英语写作|50句高阶功能句式及语用功能解析前言 高考英语书面表达得分核心，不在于词汇的堆砌，而在于功能句式的精准语用输出。阅卷评分核心维度为句式多样性、逻辑严密性、表达地道性、语法规范性。本文精选50组适配高考应用文、读后续写、话题作文的高阶万能功能句式，每组严格配置准化例句、精准中文释义、深度语用教研解析，覆盖开篇引入、观点论证、因果逻辑、让步转折、情感描写、场景叙事、总结升华等全部写作功能场景，句式规避低级模板化表达，适配全国甲乙卷、新高考I/II卷全部题型，为高考写作提分核心教研素材。 第一章 开篇引入类功能句式（1-10） 句式例句1 When it comes to developing personal hobbies, opinions vary from person to person, which leads to heated discussions among teenagers and their parents nowadays.谈及培养个人爱好这一话题，人们观点各异，如今这也在青少年和家长之间引发了热烈讨论。 功能句式结构：When it comes to..., opinions vary from person to person, which... 功能句式解析 本结构为议论文话题引入框架。 When it comes to... 用于引出讨论主题； opinions vary from person to person 表达观点分化；末尾非限制性定语从句 which... 顺势引出话题带来的社会反响。替代简单句 Different people have different opinions ，从句叠加丰富句式层级，语体正式，适合环保、学习、科技等各类议论文开篇，衔接后续正反观点论述。 句式例句2 There is no denying that reading plays an indispensable role in shaping our personalities and broadening our horizons in daily life.不可否认，阅读在塑造我们的人格、拓宽我们的眼界的日常生活中发挥着不可或缺的作用。 功能句式结构：There is no denying that ... plays an indispensable role in doing sth. 功能句式解析 There is no denying that 是双重否定引出论点的主语从句框架；主句使用 play an indispensable role in 替换低级短语 be important in 。整体句式用来肯定某事物的重要价值，语气庄重正式，适用于读书、诚信、运动等正向品质类话题开篇，快速建立文章立论基调。 句式例句3 As is universally acknowledged, perseverance is of great significance to the long-term growth of every young student in study and life.众所周知，毅力对于每一位青年学生的学业与人生长远成长都有着重大的意义。 功能句式结构：As is universally acknowledged, ... is of great significance to ... 功能句式解析 As is universally acknowledged 为as引导的非限制性定语从句，放在句首引出公认观点； be of great significance to 属于“be + of + 名词”高级名词化结构，等同于be significant to。句式工整对称，适合品质、习惯类话题开篇和论点引入，是高考书面表达标志性高分句型。 句式例句4 Recently, a growing number of teenagers have realized the importance of protecting the environment and started to take practical actions actively.近期，越来越多的青少年意识到了保护环境的重要性，并开始主动付诸切实可行的行动。 功能句式结构：Recently, a growing number of sb. have realized the importance of doing sth. and started to do sth. 功能句式解析 本结构采用现在完成时，描述社会观念与行为的动态变化。 a growing number of 替换more and more；并列谓语 have realized...and started to... 同步呈现思想转变与实践行动。适配环保、传统文化、志愿服务等热点现象开篇，时态选择符合高考写作考查重点。 句式例句5 In contemporary society, inheriting traditional Chinese culture has become an inevitable trend that we young people can never ignore.在当代社会，传承中华传统文化已然成为我们青年人不可忽视的必然发展趋势。 功能句式结构：In contemporary society, ... has become an inevitable trend that ... 功能句式解析 In contemporary society 作为背景状语铺垫时代语境；主句后接that引导定语从句修饰名词trend。contemporary、inevitable属于课标高阶词汇，整套句式适合文化自信、社会发展类议论文开篇，书面正式感强，拉开和普通模板作文差距。 句式例句6 It is widely believed that keeping regular exercise contributes greatly to our physical health and positive mental state in daily life.人们普遍认为，坚持规律运动对我们日常生活中的身体健康和积极心态大有裨益。 功能句式结构：It is widely believed that ... contributes greatly to ... 功能句式解析 It is widely believed that 是形式主语从句结构，被动语态契合议论文客观书面风格； contribute greatly to 替代简单动词help，表示“有助于”。句式用于引出大众共识，适用于健康、好习惯、阅读等正向生活类话题立论。 句式例句7 Nowadays, increasing public attention has been paid to the issue of waste reduction in schools and public living areas.如今，学校和公共生活区的节约减废问题，已经受到了社会大众越来越多的关注。 功能句式结构：Nowadays, increasing public attention has been paid to the issue of ... 功能句式解析 本句使用被动语态 attention has been paid to ，将讨论的社会问题作为表述重心，避开平铺直叙的主动句。适合浪费、网络沉迷、心理焦虑、安全隐患等社会问题类话题，客观中立，契合议论文严谨基调。 句式例句8 As far as I am concerned, balancing study and relaxation is the wisest choice for teenagers facing heavy academic pressure nowadays.在我看来，平衡学习与放松是当下承受繁重学业压力的青少年最明智的选择。 功能句式结构：As far as I am concerned, ... is the wisest choice for sb. doing sth. 功能句式解析 As far as I am concerned 用于引出个人观点，替换口语化的I think；动名词短语作主语，后置分词 facing... 修饰人物。适用于议论文发表个人看法，可用于开篇立论或者段落过渡，是高考写作万能观点引入句型。 句式例句9 A heated debate has arisen among senior high students concerning whether we should take part in various after-school activities.高中生群体中，关于我们是否应该参与各类课外活动的话题已经引发了激烈的争论。 功能句式结构：A heated debate has arisen among sb. concerning whether-clause 功能句式解析 现在完成时描述争论已经产生；介词 concerning 替代about，后接whether宾语从句点明争议核心。专门用于利弊类、争议类话题开篇，如电子产品使用、课外补习、线上学习等，简洁高级。 句式例句10 With the rapid development of modern society, people’s attitude towards volunteer service has undergone tremendous positive changes.随着现代社会的快速发展，人们对于志愿服务的态度已经发生了巨大的积极转变。 功能句式结构：With the rapid development of ..., one’s attitude towards ... has undergone tremendous changes. 功能句式解析 With + 名词 伴随状语是高考高频核心结构，交代时代背景；主句描述观念发生转变。适合社会发展、观念更新、科技进步类话题开篇，语法稳定，画面感与逻辑感兼备。 第二章 因果逻辑类功能句式（11-20） 句式例句11 The main reason why many students feel stressed out is that they fail to arrange their study time reasonably and scientifically.许多学生感到身心压力巨大的主要原因，是他们无法合理、科学地规划自己的学习时间。 功能句式结构：The main reason why ... is that ... 功能句式解析 why 引导定语从句修饰reason， that 引导表语从句引出原因内容，复合从句嵌套结构。专门用于议论文主体段原因剖析，替代简单because分句，逻辑层次清晰，属于高考复合句核心考点，提分效果突出。 句式例句12 Lack of self-discipline and reasonable planning mainly account for lazy behaviors in teenagers’ daily study and life.自律性缺失与规划能力不足，是青少年在日常学习生活中出现懈怠行为的主要原因。 功能句式结构：Noun phrase mainly account for ... in sb.’s daily study and life. 功能句式解析 核心动词短语 account for 表示“是……的原因，解释”，替代基础词cause / lead to；名词短语作主语，用抽象名词表达根源。语体正式，适合问题分析段落，用于剖析不良现象背后深层诱因。 句式例句13 Thanks to various school activities and teachers’ guidance, we can gain precious opportunities to improve our comprehensive abilities.得益于丰富的校园活动和老师的悉心指导，我们能够获得提升综合能力的宝贵机会。 功能句式结构：Thanks to ..., sb. can gain precious opportunities to do sth. 功能句式解析 Thanks to + 名词短语 引导正向原因，只用于褒义语境，区别于中性的because of。主句表达收获与成长，适合感恩、校园活动、个人提升类正向话题，放在段落开头交代有利条件。 句式例句14 As a result of ignoring safety rules in daily life, many people may suffer from unexpected dangers and unnecessary economic losses.由于在日常生活中忽视安全规则，很多人可能会遭遇突如其来的危险和不必要的经济损失。 功能句式结构：As a result of doing sth., sb. may suffer from ... 功能句式解析 As a result of 介词短语引出负面诱因，后接动名词；主句 suffer from 引出不良后果。专门用来论证陋习、疏忽带来的危害，适配安全、坏习惯、风险警示类写作段落。 句式例句15 It is because of continuous hard work and firm determination that we can finally realize our dreams and achieve life goals.正是凭借持之以恒的努力与坚定的决心，我们最终才能实现梦想、达成人生目标。 功能句式结构：It is because of ... that sb. can finally realize one’s dreams. 功能句式解析 强调句型 It is … that … ，用来着重突出促成成功的核心要素，强化语气。适合论点强化、文章结尾升华，多用于坚持、奋斗、励志类主题，语法上属于高考重点考查句型。 句式例句16 Many bad habits damage our health. Consequently, it is urgent for us to take effective measures to correct them in time.诸多陋习会损害我们的健康，因此我们亟需采取有效的措施，及时改正这些不良习惯。 功能句式结构：..., Consequently, it is urgent for sb. to take effective measures to do sth. 功能句式解析 衔接副词 Consequently 替代简单so，承接前文现象引出对策； it is urgent for sb. to do 不定式作真实主语，提出解决方案。是议论文“分析问题—提出对策”逻辑链的经典过渡句式。 句式例句17 The negative consequence of ignoring trivial details will gradually hinder students’ academic progress and personal long-term development.忽视细微细节带来的负面影响，会逐渐阻碍学生的学业进步与个人的长远发展。 功能句式结构：The negative consequence of doing sth. will gradually hinder ... 功能句式解析 主语使用抽象名词consequence，表达长期衍生的负面影响；谓语hinder表示“阻碍”。侧重论证缓慢、间接的因果关系，体现思维深度，适合习惯养成、学习成长等深度分析话题。 句式例句18 Only by developing good living habits and self-discipline can we solve the troubles in our study and daily life effectively.唯有养成良好的生活习惯、保持自律，我们才能有效解决学习和日常生活中的各类困扰。 功能句式结构：Only by doing sth. can we do sth. 功能句式解析 only + 介词短语 置于句首引发部分倒装，高考核心高分语法结构。用于提出解决问题的必要途径，语气有力，适合议论文主体对策段、结尾总结，说服力强。 句式例句19 Due to the lack of environmental awareness, many citizens fail to realize the significance of protecting our living environment actively.由于环保意识的缺失，很多市民未能意识到主动保护我们生存环境的重要意义。 功能句式结构：Due to the lack of ..., sb. fail to realize the significance of doing sth. 功能句式解析 Due to 书面介词短语引出原因； the lack of + 抽象名词 替换简单句子 people don’t have 。适合剖析社会普遍存在的认知短板，多用于环保、公德、安全教育类话题。 句式例句20 This thing benefits our growth greatly. That is why we should attach great importance to this meaningful and valuable issue all the time.这件事对我们的成长大有裨益，这也是我们应当始终重视这一有意义、有价值的问题的原因。 功能句式结构：..., That is why sb. should attach great importance to ... 功能句式解析 That is why 引导表语从句，总结前文并引出结论； attach great importance to 高级短语替换pay attention to。用于段落收尾小结，重申观点，句式工整利落。 第三章 让步转折类功能句式（21-30） 句式例句21 Although online learning has certain convenient advantages, its potential negative influences on students cannot be ignored at all.尽管线上学习具备一定的便利优势，但其对学生产生的潜在负面影响是我们绝对不能忽视的。 功能句式结构：Although ... has certain advantages, its potential negative influences ... cannot be ignored. 功能句式解析 Although 引导让步状语从句，采用“先承认优点，再指出弊端”的先扬后抑结构。适配利弊类议论文，体现辩证思考，适合网络、电子产品、线上学习等争议话题的主体段落论证。 句式例句22 Admittedly, taking part in social practice is beneficial, yet it may bring about some hidden risks for young teenagers.诚然，参与社会实践对我们大有裨益，但同时也可能会给青少年带来一些潜在的安全隐患。 功能句式结构：Admittedly, doing sth. is beneficial, yet it may bring about some hidden risks. 功能句式解析 Admittedly 高阶评注性状语，相当于“诚然”；并列连词 yet 引出转折，相比but语体更加委婉正式。用于辩证评价事物，适合社会实践、课外活动等利弊讨论。 句式例句23 While we enjoy the great convenience brought by electronic devices, we should never overlook their obvious drawbacks.在我们享受电子产品带来的巨大便利时，绝不应当忽视其存在的诸多明显弊端。 功能句式结构：While we enjoy the convenience brought by ..., we should never overlook ... 功能句式解析 While 引导对比型让步状语从句，强调两件事情同步并存；过去分词 brought by 后置作定语。适合科技、现代生活类话题，一边描述便利，一边警示弊端。 句式例句24 No matter how perfect the current learning method seems, it still has obvious room for continuous improvement and adjustment.无论当下的学习方法看起来多么完善，其依旧存在可供持续改进和调整的提升空间。 功能句式结构：No matter how + adj. + subject + predicate, it still has room for improvement. 功能句式解析 No matter how 引导让步状语从句，表达再优秀的事物仍有提升空间，规避绝对化表述。适合段落末尾辩证总结，符合高考写作严谨性评分标准。 句式例句25 Despite the fact that health is the most precious wealth, many people still ignore healthy living rules in daily life.尽管健康是最珍贵的财富这一点众所周知，但依旧有很多人在日常生活中忽视健康准则。 功能句式结构：Despite the fact that + 同位语从句, sb. still do sth. 功能句式解析 Despite the fact that 后接同位语从句，属于高阶复合结构，替代简单的although从句。语法复杂度高，提升作文档次，适合健康、生活习惯类议论文主体段落。 句式例句26 Things may seem extremely tough and challenging at first, but continuous efforts will finally bring positive changes to the whole situation.事情起初或许看似艰难棘手、充满挑战，但持之以恒的努力终将为整体局面带来积极的改变。 功能句式结构：Things may seem + adj. at first, but ... will finally bring positive changes. 功能句式解析 前半句描述困境，but转折引出希望与转机，叙事感强。专门适配读后续写困境突破、逆袭成长场景，兼具叙事抒情，适合记叙文情节升华。 句式例句27 It is true that scores matter in study, however, they are not the only key factor affecting students’ overall growth.诚然，分数在学业中至关重要，但它并非影响学生综合成长的唯一核心因素。 功能句式结构：It is true that ..., however, it is not the only factor doing sth. 功能句式解析 It is true that 先认可对方观点，however转折进行修正，用来纠正片面看法。适合学业观、价值观类议论文，体现思辨能力，提升文章思想深度。 句式例句28 Even if we meet countless difficulties and setbacks on the road of growth, we should never abandon our original dreams and goals.即便我们在成长的道路上遭遇无数艰难险阻与挫折，也绝不应当放弃自己最初的梦想与目标。 功能句式结构：Even if we meet ... on the road of growth, we should never abandon ... 功能句式解析 Even if 引导让步从句，假设逆境场景，主句表达坚定态度。情感饱满，适用于励志成长话题议论文结尾升华，也可用于读后续写人物内心描写。 句式例句29 In spite of various difficulties and challenges in study, we still possess enough courage and confidence to make steady progress.尽管学习中存在各种各样的困难与挑战，我们依旧拥有足够的勇气和信心去稳步取得进步。 功能句式结构：In spite of + noun phrase, sb. still possess ... to do sth. 功能句式解析 In spite of 介词短语引出让步条件，后接名词词组，替代状语从句，句式紧凑简洁。书面感强，适合各类正向主题，表达直面困难的积极心态。 句式例句30 What matters is not the hardships we meet, but the positive attitude we hold towards all difficulties in life.真正重要的并非我们遭遇的苦难，而是我们面对人生中所有困境时所持有的积极心态。 功能句式结构：What matters is not ..., but the ... (that) we hold towards ... 功能句式解析 What matters 主语从句作为主句主语， not...but... 并列结构突出取舍关系，强调内在态度重于外部磨难。句式哲理感强，适合议论文结尾升华、读后续写人物感悟。 第四章 观点论证类功能句式（31-40） 句式例句31 From my perspective, nothing is more valuable than developing the ability to think independently in the information age.在我看来，在信息时代，没有什么比培养独立思考的能力更为宝贵。 功能句式结构：From my perspective, nothing is more ... than doing sth. 功能句式解析 From my perspective 替代I think引出个人观点； nothing is more ... than 否定词加比较级表达最高级，高考经典高分结构。语气强烈，适合表达强烈主张，用于议论文立论与观点强化。 句式例句32 There is every chance that regular reading can equip teenagers with abundant knowledge and noble qualities.经常性阅读很有可能让青少年储备丰富知识，塑造高尚品格。 功能句式结构：There is every chance that ... equip sb. with sth. 功能句式解析 There is every chance that 主语从句结构，表“很有可能”，替换简单的it is likely that； equip sb. with sth. 意为使某人具备。适合论证好习惯带来的收获，语体地道。 句式例句33 As far as the benefits are concerned, outdoor activities can refresh our mind and relieve us of heavy academic pressure.就益处而言，户外活动可以让我们头脑清醒，帮我们摆脱繁重的学业压力。 功能句式结构：As far as ... are concerned, ... can refresh ... and relieve sb. of ... 功能句式解析 As far as ... are concerned 用于转换论证角度，聚焦利弊讨论； relieve sb. of sth. 高级短语，表示“减轻、摆脱”，适合分析各类活动的好处。 句式例句34 It stands to reason that good communication serves as a bridge connecting people and removing misunderstandings.合乎情理的是，良好沟通如同桥梁，连接人与人之间的关系，消除误解。 功能句式结构：It stands to reason that ... serves as a bridge doing sth. 功能句式解析 It stands to reason that 表示“合乎情理”，引出符合常理的论点； serve as 充当、作为，比喻句式，文采突出。适合人际交往、合作类话题论证。 句式例句35 We can safely draw the conclusion that small good deeds will gradually make a big difference to our society.我们完全可以得出这样的结论：微小善行终将对我们的社会产生巨大影响。 功能句式结构：We can safely draw the conclusion that ... make a big difference to ... 功能句式解析 draw the conclusion that 是议论文收尾经典句型，用于段落或全文小结； make a big difference to 表示产生重大影响，替换change greatly，适合结尾总结观点。 句式例句36 Few things can match the power of perseverance when we are faced with long-term tough tasks.当我们面对长期艰巨任务时，很少有事物能够比得上坚持所蕴藏的力量。 功能句式结构：Few things can match the power of ... when sb. are faced with ... 功能句式解析 Few things can match 用否定弱化式比较，委婉突出事物价值； be faced with 面对，比face书面感更强。适合品质类论点，论证坚持、勇气、信念的力量。 句式例句37 It is advisable for teenagers to set practical goals instead of chasing unrealistic dreams blindly.青少年应当设立切实可行的目标，而不是盲目追逐不切实际的梦想。 功能句式结构：It is advisable for sb. to do sth. instead of doing sth. 功能句式解析 It is advisable for sb. to do 提出建议，语气客观委婉； instead of 取舍对比结构，用于提出理性选择，适合应用文建议、议论文观点表达。 句式例句38 As a case in point, many successful people owe their achievements to continuous efforts rather than good luck.举例来说，许多成功者将自身成就归因于持续努力，而非好运。 功能句式结构：As a case in point, sb. owe sth. to sth. rather than ... 功能句式解析 As a case in point 用于举例论证，替代for example； owe ... to ... 把……归因于； rather than 而不是。主体段举例专用句式，丰富论证手段。 句式例句39 No one can deny that honesty lays a solid foundation for trust between friends and family members.没有人可以否认，诚信为亲友之间建立信任打下坚实基础。 功能句式结构：No one can deny that ... lay a solid foundation for ... 功能句式解析 No one can deny that 强势肯定论点； lay a solid foundation for 为……奠定坚实基础，高级固定搭配。适用于品德类话题，论证诚信、尊重、责任的价值。 句式例句40 From what has been discussed above, we may reach the conclusion that teamwork creates unexpected strength.综合以上讨论内容，我们可以得出结论：团队协作能够催生意想不到的力量。 功能句式结构：From what has been discussed above, we may reach the conclusion that ... 功能句式解析 From what has been discussed above 标准议论文收尾引导语，适合全文末尾总结； reach the conclusion that 得出结论。逻辑规整，适配各类议论文结尾。 第五章 场景叙事&情感升华类功能句式（41-50） 句式例句41 Hardly had he heard the encouraging words when he regained confidence and decided to have another try.他一听到这番鼓舞人心的话语，便重拾信心，决定再尝试一次。 功能句式结构：Hardly had sb. done sth. when sb. did sth. 功能句式解析 Hardly置于句首的部分倒装，高考重点语法，表“一……就……”，侧重瞬间动作衔接。专门用于读后续写，描写人物情绪转变、动作接连发生。 句式例句42 A surge of excitement swept over him the moment he saw his long-waiting friends standing at the gate.当他看见久等的朋友们站在门口时，一阵激动瞬间涌上心头。 功能句式结构：A surge of ... swept over sb. the moment (that) sb. did sth. 功能句式解析 A surge of ... swept over sb. 经典心理描写，“一股……情绪席卷某人”； the moment 连词引导时间状语从句。读后续写情绪描写高分句式，替换简单he felt excited。 句式例句43 It was not until he experienced the hardship that he came to realize the value of easy and peaceful life.直到亲身经历艰难困苦之后，他才慢慢体会到安稳平淡生活的可贵。 功能句式结构：It was not until ... that sb. came to realize ... 功能句式解析 not…until强调句型，高考核心语法； come to realize 表示慢慢领悟，体现心理变化过程。适合读后续写人物顿悟、成长感悟场景，升华故事主旨。 句式例句44 Tired as they were, they still spared no effort to finish the task before the sunset came.尽管他们身心疲惫，依旧不遗余力，争取在日落之前完成这项任务。 功能句式结构：Adj. as + subject + predicate, sb. still spare no effort to do sth. 功能句式解析 as引导倒装让步从句（形容词前置）； spare no effort to do 不遗余力做某事。适合读后续写逆境坚持场景，刻画人物坚韧品质。 句式例句45 What impressed me most was that all the volunteers devoted their spare time to helping people in need.让我印象最深的是，所有志愿者都奉献课余时间，去帮助那些有需要的人。 功能句式结构：What impressed sb. most was that ... devote ... to doing sth. 功能句式解析 what引导主语从句作为句子主干； devote sth. to doing 投身于、奉献。适用于记叙文、应用文，描写见闻感受，突出触动人心的场景。 句式例句46 With tears rolling down his cheeks, he expressed sincere gratitude to those who had offered him timely help.泪水顺着脸颊滑落，他向那些及时伸出援手的人表达诚挚谢意。 功能句式结构：With + noun + present participle, sb. express gratitude to sb. who ... 功能句式解析 With复合结构作伴随状语，画面感极强； express sincere gratitude to 书面表达感谢，适合读后续写感人场景、感谢信应用文。 句式例句47 Only when we put ourselves in others’ shoes can we truly understand their feelings and difficulties.只有换位思考，我们才能真正理解他人的感受与难处。 功能句式结构：Only when-clause can sb. do sth. 功能句式解析 Only+状语从句置于句首引发主句倒装，高考高频考点； put ourselves in others’ shoes 换位思考地道短语。适合议论文人际交往、共情主题，也可用于故事结尾感悟。 句式例句48 Little did I know that this ordinary experience would exert such a profound influence on my whole life.我当时几乎不曾想到，这段平凡的经历会对我的一生产生如此深远的影响。 功能句式结构：Little did sb. know that ... exert a profound influence on ... 功能句式解析 Little放句首否定副词倒装； exert a profound influence on 对……产生深远影响。适合记叙文、读后续写，回顾往事，表达感悟升华。 句式例句49 It occurred to him that he should take immediate action instead of sitting there waiting for luck to come.他突然想到，自己应当立刻行动，而不是坐等好运降临。 功能句式结构：It occurred to sb. that ... take immediate action instead of ... 功能句式解析 It occurred to sb. that 某人突然想到，经典心理触发句型，替代suddenly he thought。读后续写描写人物萌生想法、下定决心的场景。 句式例句50 As time went by, we came to appreciate that true happiness lies in the process rather than the final result.随着时光流逝，我们慢慢懂得，真正的幸福在于过程，而非最终的结果。 功能句式结构：As time went by, sb. come to appreciate that ... lie in ... rather than ... 功能句式解析 As time went by 时间背景从句； lie in 在于。句式带有哲理感悟，适合议论文结尾升华，读后续写文末点睛总结。
