1.逻辑连接词
表原因: Because parents are the most intimate people to children, they absolutely should take the responsibility.
表结果: As a result, children would learn how to be qualified social members simply from imitating their parents.
B. Exemplification 举例
举事例:
列数据:
e.g.: According to a recent research, school education enables children to have the opportunity to communicate with social members of the same age.
e.g.: Despite the fact that children are sometimes spoiled by the overwhelming parental love, it is still important for them to understand different social roles by learning from their parents.
E. Explanation 解释说明
e.g.: First of all, language is a carrier of cultural identity of the people who speak it. In other words, a language is a representation of its speakers’ cultural background.
2. 口语中观点引出：
中性动词 1. 导致：v.cause,bringabout,giveriseto,leadto,generate,create,Beacontributingfactor to 2.认为：v.pointout,argue,claim,assert,think,consider 3.强调：v.emphasize,bring/callattentionto,accentuate,heighten,strengthen 4.集中：v.focuson,concentrateon 5.解决：https://www.doczj.com/doc/dd11666522.html,bat,address,tackle,resolve,solve 6.从事：v.carryout,conduct,perform 7.承认：v.concede,admit,acknowledge,accept,allow,grant 正向动词 1.支持：v.support,advocate,agreewith 2.增加： v.increase,grow,rise,enlargen. increase,growth,rise,enlargeme nt 3.改善：v.improve,enhance,upgrade,boost n.improvement,enhancement,boom 4.扩张： v.expand,enlarge,extend,widen,broadenn. expansion,enlargement,extension 5.提高：v.augment,increase,develop,intensify n.augment,increase,development 6.发展： v.develop,advance,grow,evolve,flourish n.development,advancement,growth,flour ishing 7.产生：v.develop,comeintobeing/existence,comeabout 8.获得：v.acquire,gain,get,obtain,attain 9.执行：v.implement,execute,putintoeffect,perform n.implementation,performance 10.实现： v.achieve,fulfill,gain,accomplish,attainn.achievement,accomplis hment,attainment 11.开始：https://www.doczj.com/doc/dd11666522.html,mence,begin,start https://www.doczj.com/doc/dd11666522.html,mencement,beginning,start 12.促进： v.promote,further,advance,encourage,stimulate,fost ern.promotion,advancement 13.鼓励：v.stimulate,encourage,actasstimulus,motivate n.encouragement,incentive,motivation 14.唤起：v.arouse,cause,induce,prompt,trigger,sparkoff 15.需要：v.callfor,demand,require 16.取代：v.replace,taketheplaceof,substitutefor
雅思写作十大原则核心词汇 1. 金钱原则（MONEY） 2. 时间原则（TIME） 3. 健康原则（HEALTH） 4. 情感原则（EMOTION） 5. 智力与教育原则（INTELLECT AND EDUCA TION） 6. 心理原则（PSYCHOLOGY） 7. 权利原则（RIGHTS） 8. 环保原则（ENVIRONMENT） 9. 文化与传统原则（CULTURE AND TRADITION） 10. 道德与犯罪原则（MORALITY AND CRIME） 1 金钱原则（MONEY） a tight budget 资金紧张 alleviate vt.减轻，使（痛苦等）易于忍受 bankrupt n .破产者；adj.破产了的 be short of 缺乏 beggar n .乞丐 burden n..担子，压力，负担；v .担负 burn money 浪费钱 charity hospital 慈善医院 consumption n .消费（量） costly adj.昂贵的，贵重的 dear adj.昂贵的 destitute adj.穷困的，缺乏的 economic burden 经济负担 economic difficulty 经济困难 eligible children 适龄儿童 eliminate vt.排除，消除 expend vt.花费，消耗，支出 expenditure n .花费，支出，消耗 expensive adj.花费的，昂贵的 finance vt.资助，供给……经费，负担经费；n .财政，金融financial aid 经济资助 financial strain 资金紧张，以济压力 foreign currency 外汇 go broken 破产 government revenue 政府税收 health care 医疗保健 homeless adj.无家的，无家可归的 hunger n .饥饿 illiteracy n .文盲
ACT/AG 从字母演化的角度上明确告诉大家g=ct 这是在语言发展时上英语特殊发展的东西字母g变化为ct 往往还有词性变化。比如fig=fict 表示做的词根sect=seg切的词根。figment 虚构的事fiction 小说 fragment 碎片fraction 摩擦 elegance 高雅典雅elect 选举 segment 部分section 部分 contagion传染contact 接触 action 动作对。。。采取行动起诉 actionable 可以控诉的 activate ate动词词尾表示使动激活活化 activation 名词 activator 使激活的一个东西or-er不是人的意思，是发出这个动作的人或者是事物。起到激活作用的东西是反映的催化剂。好我问一下大家，催化剂是否参与化学反应。参加active 积极的活跃的 activity 活跃活动性 actual 事实上 actuality 实在, 现状 actualize 实现, 实施 actually 实际上事实上 actuate 开始行动 enact 扮演actor actress enactment AGOGUE agogue 领导引导=lead 但是是往不好的方向上引导贬义的引导 demagogue dem人民往不好的方向上引导人民的人煽动政治家(尤指利用情绪或偏见煽动民众,以期获得领导地位及达到私人目的的人) pedagogue ped 词根两个意思一个是脚一个是儿童。
synagogue syn这个前缀就等译一个单词表示same 什么一样，相同引申为共同同时的意思，所以这单词的意思引导到一起而且是不好的引导特指犹太人集会, 犹太教会堂, 犹太教 AL/OL/UL 营养滋养 Aliment 食物, 滋养品 Alimental 俺来馒头食物的, 富有养分的 alimentary alimentation alimony adolescence 青春期ad 加强ol 营养escence 表示性质的词尾需要加强营养的时期 就是青春期人体仅有的两个身高发育的高速期 adolescent 青春期的, 青春的 prolific pro 前ol 营养提前给营养植物会多产的, 丰富的, 大量繁殖的 prolificacy 生产力, 多产 proliferate （使多产）细胞分裂繁殖; 增生[殖]; 多育 adult 成人, 成年人 adulthood 成人期 adultness 成熟, 老成 adulterate 掺假的, 通奸的 adultery 通奸, 通奸行为这两个单词都是成年人干的丑事，当然有的同学说，老师我未成年的时候也干过，不要这样。 ALTER/ALI 1. other 其它2 to change 改变 Alter 改变 Alteration 变更, 改造考研词汇 Altercate alter改变+c +ate 使动结尾，改变的太多了，没有主意，没有准信，合作的人就回和他们发生口角争吵 .争论, 口角 Altercation 争论, 口角 Alternate 交替的, 轮流的, 预备的AC Alternating Current, 交流电DC Direct Current 直流电(流); Alternation 交替, 轮流, 间隔 好同学你看一下，altercate 和alternate 两个单词区分c 发音是K K和口角的口是不是都是K的音啊
Part 1 A A band of= a herd of=a flock of 一群 A range of=an array of= a list of= a collection of=a series of= a set of一系列Accelerate=speed up加速 Accomplishment=achievement 成就，完成 Accomplish=achieve （V）完成，达成，成就 Attend=participate in 参加 Achieve=obtain=gain=access to sth 得到、获得 Adapt to=integrate into使适应、融为一体 Aim.n=objective=goal 目的 Aim at=focus on=concentrate on=emphasize on 集中、强调 An array of=a list of =a set of=a series of 一系列 Attempt to do=try to do=intend to do尝试作，想要作 Approximately=roughly=about=some=around 大约 Appreciation=interest 欣赏 As a result=consequently=as a consequence=hence因此、从而 As well as=and和 As well=too也 Associate with=connect with=link with=relate to=involve in与……相关联Attach to=connect to=link to=serve与……相连接、附着在……上 At will=at random＝by chance=by accident=accidentally随意地Automatically ensure=guarantee确保 B Be similar to=closely resembled =have something in common 相似 Be used to=be devoted to专门用于 Be equivalent to=be equal to 等同于 Be taken aback=be surprised 吃惊 Briskly =rapidly=swiftly快速地 C Calculate=measure 衡量 Catch up with=keep pace with跟上步伐 Chief=major=dominant=principle主要的 Chronic=long term 慢性病的 Complain=illness 病症 Concern n. =focus关心的问题 Concern v. =about 与……有关
in detail 详细地 in difficulties 处境 困难 in effect 实际上 雅思写作必背核心词组 发表时间：2008年7月11日 中国雅思网 at (the) best 充其量，至多 on bus in ess 因公，因事 in case 假如，以防（万一）免得 in any eve nt 无论如何 in no case 决不 in charge of 负责…，主管… in the face of 面对…，不顾… in common 共用，共有，共同 in favor of 有利于…，赞成…，支持… in con clusi on 最后，总之 in gen eral 通常，大体 上 on con diti on that 在…条件下 at heart 在内心，实质上 by accide nt 偶然 in con trast with/to 与…成对照 on acco unt of 因为…，由于… un der control 被控制住 in additi on to 除…之外 at all costs 不惜任何代 价 on (the/a n) average 平均，一般来说 at the cost of 以…为代价 on the basis of 根据…，在…的基础上 in the course of 在…过程中，在…期间 in any case 无论如何，总之 on earth 究竟，至U 底 in case of 假使…，万一 at all events 无论如何 by cha nee 偶然，碰巧 with the exception of 除…之?外 in connection with/to 关于… in honor of 为纪念…，向…表示敬意 in consequenee 因此，结果 at in tervals 不时，时时 in con seque nee of 由于…的缘故 at length 终于，最后，详细地 on the con trary 反之，正相反 at a loss 困惑，不知所措
雅思阅读核心词汇表以及记忆方法建议 雅思阅读核心词汇表以及记忆方法建议一文汇总了雅思阅读中的常用词汇供大家参考，并且告诉了我们怎样去记忆这些单词,下面就和大家分享，来欣赏一下吧。 雅思阅读核心词汇表以及记忆方法建议 雅思阅读核心词汇表以及记忆方法建议为你带来雅思阅读中常常出现的词汇列表以及在以及雅思阅读词汇时的方法和建议。雅思阅读一共有3篇文章，内容从自然科学到人文科学，题目数量为40多道，题目类型有14，15种。这样一个科目需要记住哪些核心的单词呢。我们一起来看一下。 Academician 院士 A-list 名流群，精英 all-expense tour 自费游 Alma Mater 母校 Antichoice 反堕胎 Backwater 死水，死气沉沉的地方 Badger game 美人计 Bagstuffer 街头广告传单 Bandwagon 见风使舵 Bank of issue 发行银行 Bard-of-Avon 埃文河诗人，莎士比亚的别称 Bearish 行情下跌的
Beat generation 垮掉的一代 Beau monde 上流社会 Beautiful people 上流社会的时髦阶层Bee (美)为互助友好而举行的聚会Beeper BP机 Bell-bottom trousers 喇叭裤 Benefit 义卖，义演，义赛Bermuda Triangle 百慕大三角洲 Big stick大棒政策 Bigtime 红极一时的，赫赫有名的Black referee 黑哨 Blue moon 千载难逢的时机 Box news 花边新闻 Box office 票房 Brain drain 脑力人才外流 Brain trust 政府的智囊团Brainwave 灵感，突然想到的主意Brawn drain 劳力外流 Break- dancing 霹雳舞 Bridesmaid 女傧相 Bullish 行情上涨的 CDV compact video disc 激光光碟
雅思写作常用同义词替换100个 1. people=individuals 人们 (Those who) 2. many people=a majority of people = most of people大多数人 3. a lot of=a great deal of=plenty of 很多（修饰不可数名词） 4. a great number of=a large amount/quantity of=considerable amount o f= a large variety of很多（可数名词） 5. plentiful=abundant 丰富的，大量的 6. expensive=pricy 贵的 7. thing=item=goods 东西，物品 8. humans=human beings=human race=mankind 人类 9. benefit=conduce to=help=contribute to=aid to 有助于（动词） 10. harm=damage=endanger=undermine 危害（动词） 11. beneficial=helpful=conducive(rewarding)=do good to/be good for 有好处的（形容词） 12. harmful=detrimental=damaging有害的（形容词）
13. education=schooling 教育 14. think=believe=hold=maintain=consider=take for=agree认为 15. oppose=object to=be against=disagree 反对 16. support=be in favor of=be for 支持 17. as for me=as far as I am concerned=in the eyes of 对我来说 18. in my opinion=from my perspective=in my viewpoint=in my point of view=personally 我的观点是 19. as …develop(s)=with the development of...=with the progress of…=as…advances随着…的发展（注意什么时候用动词，什么时候用名词） 20. quickly=rapidly=at an amazing rate=at an staggering rate 很快（副词） 21. in addition=besides=furthermore=moreover=apart from=in spite of= Despite=what’s more 此外（提出新信息） 22. because=as=for=since 因为（加句子） 23. because of=due to=owing to=thanks to =attribute to 因为（加名词）
雅思写作最核心28道题拿下议论文 2009-04-07来源：中国教育在线 ·雅思写作最实用词组搭配和句型汇总 ·雅思写作部分高频词汇短语替换 ·2009第一季度雅思写作点评与复习建议 这些题目是题库里反复出现的核心题目，并且具备举一反三的功能，即解决了一道题就基本上能解决一类题。这样，同学们就可以丰富自己应对这一类话题的ideas and expressions。 1. Many people believe that the main aim for university education is to help graduates to find better jobs, while some people believe that university education has wider benefits for individuals and society . Discuss both views and give your opinion.71208 2. It is often said that the subjects taught in schools are too academic in orientation and that it would be more useful for children to learn about practical matters such as home management, work and interpersonal skills. To what extent do you agree or disagree? 3. Some people argue that teaching children of different abilities together benefits all of them. Others believe that intelligent children should be taught separately and given special treatment. Discuss both views and how do you think about it? 4. Higher education can be funded by several ways such as the following:1. All costs paid by the government; 2. All costs paid by the students;3. All costs paid by the government loan which students have to pay back after graduation.Please discuss both the advantages and disadvantages of all these three theories above and decide which the best is. 5. Schools are no longer necessary, because children can get so much information available through Internet, and they can study just as well at home. What extent do you agree or disagree? 6. Some people think teachers have a greater influnce than pa rents in the development of a child’s intelligence and social skills. Do you agree or disagree? 2008-9-6 7. Research indicates that the characteristics we are born with have much more influence on our personality and development than any experiences we may have in our life. Which do you consider to be the major influence?c5-t2 8. In many countries, more and more young people are leaving school and unable to find jobs after graduation. What problems do you think youth unemployment will cause to the indiv idual and the society? Give reasons and make some suggestions.
阅读核心单词汇总 本部分单词和常规阅读单词手册有很大不同，具体表现在： 1. 收集最核心，最常用的雅思阅读词汇，以动词，形容词和名词为核心。因为一个较长的词往往是由动词加名词后缀变成的，或者形容词变成的副词。根据笔者对考试文章的了解，收集了历届考试中高频出现的基本词汇。本部分不涉及高难词汇。熟练掌握这些词汇是获得6-7分的基石。 2.大多考生在面对单词常常困惑，因为一个单词有诸多解释。我们这里直接采用了文章中所对应的意思，因此为考试省去了很多麻烦，也充分体现了专业性。 3.单词除了核心解释外，紧接着是记忆方法。读者可以通过电影法对单词形成形象理解，也就是单词和意识的直接映射，相当于母语学习。 4.由于是从考试文章中选取的基本词汇，所以越到后面难度越高。笔者在编写时候发现到后面必须掌握的词汇越来越少，因为前面已经提到。这种排序对学习者大有裨益，因为每掌握十页单词，你的词汇就有一个不小的飞跃！ 注：N代表名词V代表动词A代表形容Adv代表副词 单词以文章出现顺序排序，这样比字母排序更有利记忆。 Measure v 测量me-meter字根表示测量。Sure确信的‘通过测量才能相信数值’
Conception n 观念，构想cept拿 Depend on 依靠，由…决定 Evidence n 证据e:out vid看ence名词‘证据让人们看出真相’Advent n 到来‘来冒险（adventure） Empire n 帝国皇帝（emperor）的帝国 Introduce v 引入intro内部duc引领 Calendar n 日历cal(culate)+end ‘通过日历计算最后的日子’。Communal a共有的‘大家（community）共有’。 Rotate v 以轴为中心旋转ro(ll)圈，tt想成陀螺。 Regulate v 管理re反复，gu（an）l(i)（管理） Successive a 连续的连续成功（success） Period n 时期 Axis n 轴The Axis二战中的轴心国 Lunar a月亮的读音像‘路呢’，月光暗，看不清路’。 Solar a太阳的读音像‘馊了’，太阳光强，温度高，把食物搞馊了’。Obit v 围绕n 轨道 Define v 下定义de向下，fin边界‘向下划定边界’ Accompany v陪同ac去company 陪伴 Revolution n 旋转re多次volv 缠卷 Artificial a人工的art 手fic制造 Impact n 影响im相当于in pact约定 Equator n 赤道equ 相等or 名词‘日夜相等长的地方’Conspicuous a 明显的spicu 看‘完全能看出来的’
雅思写作高频词汇分类汇总 1.advanced science 尖端科学 2.scientific invention 科学发明 3.exert a far-reaching impact on…对…产生一种深远的影响 4.double-edged sword 双刃剑 5.earth-shaking changes 翻天覆地的改变 6.pay the way for the future development 为未来的发展铺平道路 https://www.doczj.com/doc/dd11666522.html,y a solid foundation for…为…打下良好的基础 8.energy crisis 能源危机 9.depletion of resources 能源消耗 https://www.doczj.com/doc/dd11666522.html,estone 里程碑 11.sophisticated equipment 尖端设备 12.technical innovation 科技创新 13.expediency 权宜之计 14.antithetical 与…背道而驰的 15.over-commercialized 过渡商业化的 16.a heated discussion 热烈的讨论 17.exhaust gas 废气 18.disastrous 灾难性的 19.overshadow 使…相形见绌 https://www.doczj.com/doc/dd11666522.html,pared to/with…与…相比 https://www.doczj.com/doc/dd11666522.html,her in 引领 22.speedy and comfortable 既快捷又舒适 23.opposite forces 负面影响 24.a fatal breakdown 致命故障 25.potential hazards 潜在危险 26.pose a threat to…对…有一种威胁 27.promote relative industries 促进相关产业发展 28.accelerate 加速… 29.means of transportation 交通方式 30.transportation tools 交通工具 31.social status 社会地位 32.environmentally-friendly resources 环保的能源 33.make people’s life easier 使人们生活更方便 34.alternative fuel 可替代燃料 35.sustainable development 可持续性发展 36.scientific exploration 科学探索 37.air travel 航空旅行 38.ridiculous 可笑的 39.absurd 荒唐的 40.substitute 取代
雅思阅读高频词汇 1 state n. 情形, 状态, 国家, 政府, 州vt.声明, 陈述, 规定For the century before Johnson ’s Dictionary was published in 1775 there had been concern about the state of the English language. statement n.声明, 陈述, 综述 2 special adj.特别的, 特殊的, 专门的 especially adv.尤其，特别specialization n.特殊化, 专门化 specialise v.专业化，专门研究 specialised adj. 专门的, 专科的 In the 19th century, new, specialised, professional societies were instituted to promote and publish in the new disciplines. specialist n. 专家 speciality n.特性, 特质, 专业 specify vt.指定, 详细说明specific adj.详 细而精确的, 明确的 An early scientific journal fostered a new kind of writing based on short descriptions of specific experiments. specifically adv.特定的, 明确的 species n.种类 Extinct species are being replaced by new species. 3 differ vi.不同 In both cases the critical day length differs from species to species. difference n.差异, 差别 different adj.不同的 Different groups of researchersattacked different problems, from speech recognition to chess playing, in different ways. differentiate v.区 别, 区分 4 appropriate adj.适当的 inappropriate adj.不适当的 5 staff n. 全体职员 6 contradict vt.同...矛盾 contradiction n.反驳, 矛盾 contrary adj.相反的, 逆的 contrastvt.使与...对比n.对比, 对照 7 claim n.(根据权利提出)要求, 主张vt.(根据权利)要求, 主张
常见同义词归纳 Bright future/splendid future/rosy prospect Traffic busy/traffic jam/traffic congestion/gridlock Happy/delightful/glad/content/ecstatic/auspicious Difficult/hard/complicated/tough/intricate Important/significant/substantial/serious/far-reaching/ Big/large/great/huge/massive/vast/enormous/substantial Very/extremely/highly/greatly/really/deeply/profoundly Make/cause/create/effect/lead to/generate/bring about/produce/give rise to Must/necessity/essentia l/requirement/fundamental/imperative/ requisite/prerequisite/sine qua non Will n /desire/intention/fancy/preference/inclination/v wish/want/prefer/desire/see fit Good/excellent/awesome/amazing/ remarkable/nice Many/a large number of/numerous/various/countless/abundant/innumerable/manifold Think/imagine/consider/meditate/ponder/contemplate/belost in though/ People/persons/individuals/folk/men and women/humanity/mankind/ Upset/sad/sorrowful/morose/melancholy/down/depressed/dejec
1. 影响 To directly/profoundly/seriously affect sth 直接、深刻、严重影响 To exert/have/impose an ill/ a detrimental/ profound effect on…对产生很坏的、负面、深远的影响 Have far-reaching /long-lasting consequences 具有深远的影响 To mould the thoughts of the next generation 影响下一代的思想 To exercise a great influence on 对有重大影响力 To have tremendous hold on/over 对有重大的影响作用 To inflict a mischievous influence on sb 对某人产生有害的影响 The impact of new technology and methods on modern industry 新技术和新方法对现代工业的巨大影响 To shelter sth/sb against exposure to …保护。。。不受。。。的影响 Be exposed to 受到。。。的影响 Be detrimentally/adversely affected 受到不良影响 Be insusceptible to …不受。。。的影响，对。。。免疫 To smooth out the effect of 消除。。。的影响 2. 促进促使推动 动词：Promote, advance, boost, accelerate, facilitate, further, encourage, stimulate, drive, spur, impel, prod, foster，push …forward, carry…forward, give impetus to…) To promote friendship between nations To promote trading relations To advance the science of chemistry Such conducts are unlikely to advance your interests.这种行为对你的利益没有好处 To accelerate the economic growth of our country To accelerate world peace To facilitate trading relations It would accelerate matters if you were more co-operative. 如果你再合作一些事情就顺当多了）To further mutual understanding To further one’s education To further the reforms 深化改革 Advertisements boost sales To encourage exports 刺激、鼓励、促进出口 To prod the audience into thinking about the status quo. 促使观众思考现状 To impel sb to greater efforts Cash incentive is appealing in that it drives employees to work harder. (现金奖励/刺激很有吸引力因为能促使员工更努力工作) foster an interest 培养兴趣 foster a sense of responsibility
剑六雅思阅读核心词汇
雅思阅读核心词汇 剑 6 Text1 Reading passage 1:
1. Fair adj. 合理的 > 10. Underpin v.以..为稳固基础: support pin 大头针 11. Nutritional adj.营养的nutrition 营养、营养物 nutritious 有营养的 12. Collaborate = cooperate v.合作 collaboration n.合作 13. Instrument = tool = appliance n.仪器、乐器 14. Come down to 可归结为 15. Slice v.划开、切开 16. Stroke n.划动、划水 (也做strike的过去式) Strike = hit = knock = rebel 攻击、罢工 17.spine n.脊柱 Spin = rotate = twist = swivel=revolve v.旋转 18.Biomechanical = bio+mechanical =生物+力学的/机械学的=生物力学 19.Profile n.轮廓、外形（文中指模型） 20.Velocity n.速度 gravity n.重心 21.Immune system 免疫系统 动词替换 做：do=exercise, practice, perform (做法：behavior=exercise, practice, performance) 对…有益处：be good for.=do good to=be beneficial to =be advantageous to=be conducive to 对…有害处：be harmful/bad for=be detrimental to =be disadvantageous to=be pernicious to 集中精力于：focus on=A devote oneself to=dedicate oneself to= commit oneself to =B engage oneself in= employ oneself in 认为：think assert, contend, claim, maintain, note, believe, deem, insist, argue hold the viewpoint that= hold the standpoint that= hold the perspective that harbor an idea/opinion that = embrace a view that Be convinced that = be firmly convinced that = be fully convinced that (观点：viewpoint，standpoint，perspective ) 反对：be against=reject, object, oppose=be opposed to= become hostile to 支持：support=take sides with= side with =advocate=incline towards =lend support to=sing high praise of =in favor of 导致：lead to=trigger=spark=provoke=result in, bring about, contribute to =give rise to, give birth to, be responsible for (归咎于：be ascribed to=be attributed to) 看到（see），读到(read)，学到(learn)=接触到make contact with=have access to=be accessible to =暴露于be exposed to=gain exposure to =获得obtain=attain=acquire 发展(develop)，提高(increase)，改善(improve) =A 及物动词组promote, advance, enhance, reinforce 名词promotion, advancement, enhancement, reinforcement雅思作文同义词替换+高频句型
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