懒笔记
2017年12月英语四级真题第2套 Part III Section C (1)
CET-4 · 来自 2017年12月英语四级真题第2套 · Part III Section C (1) · 阅读理解（四选一）

2017年12月英语四级真题第2套 Part III Section C (1)

议论文 · 阅读理解（四选一） · 真题文章逐层精读

本页是 2017年12月英语四级真题第2套 Part III Section C (1) 文章的精读视角页——这篇议论文全文 345 词、4 段，CEFR 难度 C1（C1 级在英语四级文章中占 32%），作者立场为「消极批判」；英文原文之外，本篇已有的 11 项精读维度逐项展开，其中能迁移到其他英语四级真题文章的判断方法（篇章结构、修辞、言外之意、作者态度、体裁速判）随各维度一并讲透。

精读最佳实践

本页解析里的段号（P1）都可以点——点一下，原文在顶部翻开并定位到该段，解析引用的原文同步标亮；合上原文，你还停在刚才读到的位置。点 P1 试试。

PASSAGE · 文章原文

4 段英文原文

以下为2017年12月英语四级真题第2套 Part III Section C (1) 的阅读理解（四选一）原文，共 4 段。左侧 P1–P4 是段落编号——本页全部解析（结构、逐段、修辞、自检题）都以它为坐标回指原文，点击解析里的段号，原文即在顶部翻开并定位到该段、引用的原文同步标亮；合上原文仍停在当前阅读位置。原文保持卷面形态，不带翻译与标注。

Nobody really knows how big Lagos is. What's indisputable is that it's growing very quickly. Between now and 2050, the urban population of Africa could triple. Yet cities in sub-Saharan Africa are not getting richer the way cities in the rest of the world have. Most urban Africans live in slums(贫民窟); migrants are often not much better off than they were in the countryside. Why?

The immediate problem is poverty. Most of Africa is urbanizing at a lower level of income than other regions of the world did. That means there's little money around for investment that would make cities liveable and more productive. Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations. With the exception of South Africa, the only light rail metro system in sub-Saharan Africa is in Addis Ababa, Ethiopia. Traffic jam leads to expense and unpredictability, things that keep investors away.

In other parts of the world, increasing agricultural productivity and industrialization went together. More productive farmers meant there was a surplus that could feed cities; in turn, that created a pool of labour for factories. But African cities are different. They are too often built around consuming natural resources. Government is concentrated in capitals, so is the money. Most urban Africans work for a small minority of the rich, who tend to be involved in either cronyish(有裙带关系的) businesses or politics. Since African agriculture is still broadly unproductive, food is imported, consuming a portion of revenue.

So what can be done? Though African countries are poor, not all African cities are. In Lagos, foreign oil workers can pay as much as $65,000 per year in rent for a modest apartment in a safe part of town. If that income were better taxed, it might provide the revenue for better infrastructure. If city leaders were more accountable to their residents, they might favour projects designed to help them more. Yet even as new roads are built, new people arrive. When a city's population grows by 5% a year, it is difficult to keep up.

PARAGRAPHS · 逐段精读

4 段逐段主旨与解读

逐段拆解2017年12月英语四级真题第2套 的这篇原文——每段给出英文段落主旨、段落标题与中文解读，并提炼一条「这段为什么这样读」的具体方法。

  1. P1

    Rapid Urban Growth Without Prosperity

    African cities are expanding rapidly, but urbanization has failed to improve prosperity for most people.

    本段承担 introduction 的功能，它先提出非洲城市化速度极快这一表象，再揭示贫民窟和低收入这一反常结果。这个 why 为后面关于 poverty、infrastructure 以及 economic structure 的论证搭建了问题框架。

    增长却不富裕
  2. P2

    Poverty and the Infrastructure Trap

    Poverty causes underinvestment in infrastructure, making African cities inefficient and unattractive to investors.

    本段回答了首段 Why? 的第一个层面，即直接原因是 poverty。它通过交通、铁路和电力等 concrete examples 说明，贫困不仅意味着个人收入低，更意味着城市缺乏支撑经济活动的基础条件。

    贫困导致设施失修
  3. P3

    The Missing Productive Base

    African cities lack the productive agricultural and industrial base needed for broad-based urban prosperity.

    本段把第二段的直接原因推进到 structural cause，即问题不只是钱少，更在于城市经济的 wealth creation mechanism 存在缺陷。它解释了为何非洲城市即使聚集人口，也不能像其他地区那样通过农业升级和 industrialization 实现普遍繁荣。

    农业工业基础缺位
  4. P4

    Possible Reforms, Persistent Population Pressure

    Tax reform and accountable governance could improve African cities, but rapid population growth limits their impact.

    本段完成全文的对策与让步：taxation 和 accountable governance 能部分缓解财政及治理问题，但无法轻易克服人口高速增长。它呼应全文主旨，表明非洲城市的困境并非无解，却因 development speed 落后于 population growth 而格外严峻。

    改革赶不上人口
SELF CHECK · 段落自检题

4 道逐段细节自检题

针对2017年12月英语四级真题第2套这篇原文，每段配 1 道细节题（ 1 个正确项 + 5 个干扰项 ，由懒笔记精读引擎基于本段命制，非试卷原题）。 选项默认中性；点「显示答案与解析」展开正确项、解析与最快解法，现代浏览器会同步高亮正确选项。

  1. 第 1 段 定位词 migrants sub-Saharan Africa

    What is the concerning reality for many urban migrants in sub-Saharan Africa?

    • A They are rapidly becoming wealthier due to urbanization.
    • B Most of them have moved out of the slums in Lagos.
    • C Their living standards have not significantly improved compared to those in rural areas.
    • D The population growth has been accurately measured.
    • E They prefer living in the countryside to urban areas.
    • F Urbanization has been halted to prevent poverty.
    显示答案与解析 收起答案与解析

    正确答案：C

    该选项对应原文的 not much better off than they were in the countryside。命题人使用 synonym substitution，将 better off 改写为 living standards improved，并用 not significantly 保留 not much 所表达的有限程度，这是典型的 CET-4 同义改写。

    人群比较极性核对 快速锁定 第1段，利用题干中的 migrants 与 sub-Saharan Africa 做交叉 scanning，再直接寻找描述该群体处境的 comparison。随后不逐字翻译六个选项，而是先排除方向相反、答非所问和凭空增加 preference 或 purpose 的选项，最后核对正确项是否保留原文的否定程度。

  2. 第 2 段 定位词 investors

    What is identified as a major barrier to attracting investors in many sub-Saharan African cities?

    • A The over-investment in light rail systems.
    • B The abundance of financial resources for upgrades.
    • C The declining population in urban areas.
    • D High costs and the uncertainty caused by traffic congestion.
    • E The high efficiency of existing power systems.
    • F The simple and predictable nature of local business.
    显示答案与解析 收起答案与解析

    正确答案：D

    原文指出 Traffic jam leads to expense and unpredictability，而这些结果会 keep investors away。选项将 expense 改写为 high costs，将 unpredictability 改写为 uncertainty，并保留 traffic congestion 这一原因，完整对应原文的 causality chain。

    结果动词逆推双因 用 investors 快速定位到 第2段 的相关结果句，再从表示排斥结果的结构向前逆推直接原因。选项筛选时只核对两个并列 negative effects 的 synonym，不必重新梳理整段所有基础设施问题；能够同时覆盖这两个 effect 的正确项优先。

  3. 第 3 段 定位词 different

    In what way do African cities differ from those in other parts of the world according to the passage?

    • A They have achieved high agricultural productivity.
    • B Their money is evenly distributed among the population.
    • C They export a large amount of food to other countries.
    • D Industrialization is the main driver of their urban growth.
    • E They rely heavily on the consumption of natural resources.
    • F Most residents work in modern technology sectors.
    显示答案与解析 收起答案与解析

    正确答案：E

    原文指出 African cities are too often built around consuming natural resources。正确项以 rely heavily on 改写 built around，并保留 consumption of natural resources 这一核心内容；heavily 与 too often 所体现的显著依赖倾向一致。

    转折后属性归主 在 第3段 中锁定 different 这一 contrast marker，只读取转折后紧邻的主体特征，再与选项进行 predicate matching。先排除把对比方特征强加给 African cities 的选项，然后检查正确项是否用新的 verb phrase 保留同一 economic basis。

  4. 第 4 段 定位词 Lagos infrastructure

    What could potentially provide funding for better infrastructure in Lagos?

    • A Increasing the number of foreign oil workers.
    • B Stopping the 5% annual population growth.
    • C Relying on foreign aid from developed countries.
    • D Lowering the rent for modest apartments.
    • E Encouraging more people to move to the safe parts of town.
    • F Better taxation of the income from high apartment rents.
    显示答案与解析 收起答案与解析

    正确答案：F

    原文先说明外国石油工人能够支付极高的 apartment rent，随后指出 if that income were better taxed，便可能为 better infrastructure 提供 revenue。that income 指前述高额租金所形成的 rental income，而不是石油工人的工资收入；正确项准确保留了 taxation、income 和 high apartment rents 之间的关系。

    资金结果反查税源 用 Lagos 与 infrastructure 交叉定位 第4段，再围绕 provide funding 搜索其近义结果词。找到 result 后向前只读取对应的 condition，不必处理本段全部 solution 与 limitation；在选项中优先寻找同时保留 income、taxation 和 revenue logic 的正确项。

STRUCTURE · 篇章结构

4 个意群的议论文骨架

按议论文 的行文骨架切分意群，每个意群标注它覆盖的段落与对主旨的作用——逐段读完后回到这里俯瞰全篇，能看清作者为什么按这个顺序行文。

  1. 引言 P1

    非洲城市化困境的提出

    这个 introductory paragraph 通过 Lagos 的 rapid growth 引出了 central paradox：非洲的 urban population 在 triple，但 cities 却没有像 other regions 那样变得 richer，migrants 仍然生活在 slums 中，最后用一个 rhetorical question "Why?" 来 establish 全文要探讨的 core issue

    作为 opening paragraph，它通过 concrete example（Lagos）和 statistical projection（triple by 2050）来 present 一个 surprising phenomenon，为后文分析 underlying causes 做好 setup，这个 "Why?" 直接 leads to 后续段落对 poverty、infrastructure、economic structure 等 factors 的 systematic analysis

    提出城市化与经济停滞的矛盾现象
  2. 分论点 P2

    贫困导致基础设施投资不足

    这个 paragraph 回答了 introduction 的 "Why?" 通过分析 immediate problem（poverty），指出 Africa 的 urbanization 发生在 lower income level，导致 insufficient investment in infrastructure。用 concrete examples（bridges、roads、power systems、light rail）和 specific data（only Addis Ababa has metro）来 demonstrate how poor infrastructure creates traffic jams，最终 discourages investors

    作为 first supporting argument，它 establishes 一个 causal chain：low income → inadequate investment → poor infrastructure → traffic congestion → deterred investors。这个 dimension 直接 addresses 主旨中的 "inadequate infrastructure investment"，为 overall thesis 提供了 foundational explanation

    解释贫困与基础设施缺陷的因果链
  3. 分论点 P3

    经济结构失衡阻碍发展

    这个 paragraph 通过 contrast（"But African cities are different"）引入 second major cause，分析了 economic structure 的 fundamental problem。它 compares 正常的 development pattern（agricultural productivity + industrialization）和 African reality（cities built around natural resources consumption），指出 government 和 money 集中在 capitals，majority 为 minority rich 工作，而 unproductive agriculture 导致 food imports，进一步 consuming revenue

    这个 supporting argument 从 deeper structural level 解释了 why cities don't get richer。它直接对应主旨中的 "economies centered on natural resources rather than productive agriculture and industrialization"，showing how this economic model creates a vicious cycle：资源消费型经济 → 缺乏生产性基础 → 依赖进口 → 消耗收入 → 无法投资发展

    揭示资源依赖型经济的结构性缺陷
  4. 结论 P4

    解决方案探讨与局限性

    这个 concluding paragraph 用 "So what can be done?" 这个 solution-oriented question 来 transition from analysis to potential remedies。它承认 not all African cities are poor，提出 better taxation（用 Lagos 的 oil workers rent 为 example）和 more accountable leadership 可能带来 improvements。但最后用 "Yet" 转折，pointing out 即使有 new roads，population growth（5% per year）仍然 outpaces development efforts，这个 realistic assessment 给全文一个 balanced ending

    作为 conclusion，它不是简单 restate thesis，而是 move forward by proposing solutions（对应主旨的 "better taxation and accountable governance"），同时 acknowledge 一个 fundamental constraint（对应主旨的 "population growth outpaces development"）。这种 solution + limitation 的 structure 让 argument 更 nuanced and realistic，避免 oversimplified conclusion

    提出改善措施但承认根本困境
MAIN IDEA · 速判主旨

4 步定位这篇文章的主旨

不读完全篇也能锁定主旨——以下 4 步按2017年12月英语四级真题第2套 这篇原文的实际行文顺序给出，每步说明看哪里、看出什么，可直接迁移到其他英语四级文章。

  1. 首段核心矛盾 P1

    议论文的 opening 往往通过 rhetorical question 或 striking fact 来 establish 讨论的 focal point。本文首段就用 'Why?' 这个 explicit question 来 signal 后文将解释 African urbanization 的 paradox。这种 question-driven structure 是快速定位主旨的 key indicator。

  2. 段首因果词 P2 P3

    议论文的 body paragraphs 是 arguments 和 evidence 的 carriers。每段的 opening sentence 往往 signal 一个 specific reason 或 dimension。本文 第2段 开篇 'The immediate problem is poverty'，第3段 开篇对比 'other parts of the world' 与 'African cities are different'，这些都是 clear signposts，指向主旨的 constituent elements。

  3. 结尾限定性表达 P4

    议论文的 conclusion 不仅 summarize，还会 express 作者的 final judgment 或 realistic assessment。本文 第4段 虽然提到 potential solutions（'better taxed', 'more accountable'），但紧接着用 'Yet' 转折并以 'difficult to keep up' 收尾，显示作者认为问题 persists despite efforts。这种 qualified optimism 或 tempered pessimism 是主旨 tone 的 key component。

  4. 现象-原因-结果 P1 P2 P3 P4

    议论文主旨本质上是对 'what-why-so what' 三问的 integrated answer。单独的 phenomenon description 或 cause listing 都不足以 constitute 完整主旨，必须 combine 起来形成 coherent argument。本文如果只说 'African cities grow fast' 就太 superficial，只列原因也缺乏 context，必须把 growth + causes + limitation 整合才能 capture 作者的 full argument。

主旨信号词 Why? P1 problem P2 without P2 different P3 Yet P4

MAIN IDEA · 主旨

这篇文章在说什么

非洲城市正在快速城市化,但缺乏相应的经济增长,这是由于贫困、基础设施投资不足,以及经济以自然资源为中心而非生产性农业和工业化。虽然更好的税收和负责任的治理可能有所帮助,但人口增长速度超过了发展努力。
African cities are rapidly urbanizing without corresponding economic growth due to poverty, inadequate infrastructure investment, and economies centered on natural resources rather than productive agriculture and industrialization. While better taxation and accountable governance could help, population growth outpaces development efforts.
WORD INFERENCE · 生词推断

5 个生词的上下文推断

不查词典，只用文中线索推出词义——每个词给出推断出的释义与 完整推理链。已收录进英语四级高频真题词集的单词可点击进入词条页。

  • indisputable 无可争辩的,确定无疑的

    我们把两条线索串联起来。从 morphology 角度,in-dispute-able 的构词暗示这是某种无法被质疑的性质。再看 context,它和 nobody knows 形成鲜明对照:城市规模不明确,但增长速度是 indisputable 的。这种 contrast 强化了这个词表示确定无疑、无可争辩的含义。两条线索共同指向同一个结论。

    构词拆解配合语境对比验证
  • slum 贫民窟,条件恶劣的城市居住区

    我们整合两条 clues。从 comparison 角度,住在 slums 的 migrants 和在 countryside 的生活水平相当,暗示 slums 是条件较差的居住环境。从 causation 角度,城市不富裕导致人们住在 slums,这进一步确认 slums 是 poverty 的产物。两条线索都指向同一个方向:slums 是贫困城区的居住地。

    对比参照加因果背景交叉验证
  • liveable 宜居的,适合居住的

    三条 clues 形成完整的推理链。Word formation 告诉我们 liveable 字面上是能够被居住的。Parallel structure 显示它和 productive 并列,都是城市的 positive qualities。Causal logic 表明它是 investment in infrastructure 要达成的目标。综合这些线索,liveable 不只是能住,而是住得舒适、环境良好的意思。

    构词、并列、因果三维验证
  • cronyish 任人唯亲的,基于私人关系的

    把三条线索整合起来看。Morphology 显示 -ish 后缀的贬义倾向。Parallel structure 把 cronyish businesses 和 politics 联系起来,暗示权力关系。Overall tone 表明作者在批判这种 business model。综合判断,cronyish 描述的是基于私人关系而非市场规则的商业活动,带有明显的负面评价。

    后缀定性、并列定域、基调定态
  • accountable 负有责任的,应作解释的

    整合三条线索来推断。Word structure 提示 accountable 和 account(解释说明)相关,暗示责任含义。Conditional logic 显示这是个 positive quality,能带来 beneficial results。Prepositional collocation 明确了责任的方向是 to residents。综合来看,accountable 表示需要向某方负责、承担责任的意思。

    构词定域、条件定向、介词定向
RHETORIC · 修辞手法

4 处修辞手法与仿写

每处修辞给出它在本文的具体用法、同类信号词清单与一份可直接套用的 写作仿写建议——读完能认，也能写。

  • 反问修辞

    P1

    文章开篇在 第1段 用了一个 rhetorical question：'Why?'，这个 question 并不期待 reader 回答，而是 naturally 引出后文对于 African cities 发展困境的 analysis。这种 opening strategy 能够 immediately 抓住读者的 attention，让 reader 产生 curiosity，想要知道 the reasons behind 这个 phenomenon。对于 argumentative essay 来说，这个 device 成功地 established 了文章的 central problem，为后续的 cause analysis 和 solution discussion 搭建了 logical framework。

    信号词 Why How What explains What accounts for Why is it that How can we explain What caused

    仿写： 当你想要 introduce 一个复杂的 social phenomenon 或 controversial issue 时，可以先 present 一些 factual statements，然后用一个 simple but powerful 的 rhetorical question 来 conclude。这个 question 应该 directly address the core problem。仿写模版：'[Present phenomenon/facts]. Yet [unexpected contradiction or problem]. Why?' 或者 'Everyone knows [common belief]. But [surprising reality]. What explains this?'

  • 对比论证

    P2 P3

    在 第2段 和 第3段 中，作者 systematically 将 African cities 与 other regions 进行 comparison。第2段 指出 'Most of Africa is urbanizing at a lower level of income than other regions'，强调 income level 的 disparity。第3段 更 explicitly 对比：'In other parts of the world, increasing agricultural productivity and industrialization went together... But African cities are different.' 这种 contrast 非常 effectively 地 highlights 了 African urbanization 的 uniqueness 和 challenges。通过 juxtaposition，reader 能够 clearly see 为什么 conventional development models 在 Africa 不适用，这 strengthens 了作者关于 poverty 和 structural problems 的 central argument。

    信号词 But However Yet In contrast Unlike Whereas While On the other hand Different from The exception

    仿写： 使用 contrast 时，先 establish 一个 reference point（通常是 common pattern 或 general rule），然后 explicitly signal the difference。可以用 transition words 来 mark the contrast。仿写模版：'In [other contexts/places/times], [pattern A occurs]. [Detail about pattern A]. But [your subject] is different. [Explain the difference].' 或者 'While [general case] follows [pattern], [your specific case] diverges because [reason].'

  • 因果论证

    P2 P3

    整篇文章的 logical backbone 就是 causal reasoning。第2段 清晰地 establishes 'The immediate problem is poverty'，然后 explains 其 consequences：'That means there's little money... Without upgrades... Traffic jam leads to expense'。这是一个 clear causal chain。第3段 继续这个 pattern：'Since African agriculture is still broadly unproductive, food is imported, consuming a portion of revenue.' 这些 cause-effect relationships 构成了作者 argument 的 foundation，explaining why African cities 面临当前的 predicament。每个 cause 都 logically leads to specific consequences，这种 tight logical connection 让 argument 非常 persuasive。

    信号词 leads to results in causes because since as a result consequently therefore thus so due to owing to means that means

    仿写： 构建 causal argument 时，要 clearly identify both the cause 和 the effect，并 explicitly state their relationship。可以使用 causal markers 来 strengthen the connection。仿写模版：'[Cause] leads to/results in/causes [effect]. Consequently, [further effect or implication].' 或者 'Because/Since [cause], [effect]. This means [broader implication].' 记得 chain multiple causes 和 effects 来 build complex arguments。

  • 举例论证

    P2 P4

    作者在 第2段 和 第4段 提供了 specific examples 来 support general claims。在 第2段，'With the exception of South Africa, the only light rail metro system in sub-Saharan Africa is in Addis Ababa, Ethiopia' 这个 concrete example 生动地 illustrates 了 infrastructure deficiency。在 第4段，'In Lagos, foreign oil workers can pay as much as $65,000 per year in rent' 这个 striking detail 不仅 demonstrates wealth inequality，也 supports 作者关于 potential tax revenue 的 argument。这些 specific instances 把 abstract problems 变得 tangible and memorable，help readers visualize the situation。

    信号词 for example for instance such as like including consider take as seen in illustrated by demonstrated by

    仿写： 选择 examples 时，prioritize specificity over generality。Include concrete details like numbers、names、或 locations 来 enhance credibility。仿写模版：'For example/instance, [specific case with details]. This demonstrates/illustrates [connection to main point].' 或者 'Consider [specific example]. Here, [detail], showing that [what it proves].' 确保 example 直接 supports 你的 claim，并且 explain the connection explicitly。

IMPLIED MEANING · 言外之意

8 处话里有话

作者没有明说、但靠信号词传递出来的态度与暗示——每处给出原文片段、信号词类型与解读。

  • 拉各斯规模无法确定暗示管理混乱

    P1
    Nobody really knows how big Lagos is.

    模糊限制语 Nobody really knows not entirely clear hard to say difficult to determine unclear uncertain vague

    开篇用 nobody really knows 这个 vague statement 看似在说 population size 难以统计,实则 imply 拉各斯甚至整个 sub-Saharan Africa 的 urban management system 处于 chaotic state。这种 inability to measure 基本数据 reveal 了 weak governance 和 inadequate administrative capacity,为全文论证 African cities 发展困境 lay the groundwork。这个言外之意 establish 了文章的 critical tone,暗示问题的 severity 比表面看起来更深刻。

  • 反问句质疑非洲城市化模式

    P1
    migrants are often not much better off than they were in the countryside. Why?

    反问句 Why? How come? What explains this? Why is this the case? But why? The question is One must ask

    在描述了 African cities 快速 urbanization 却没有带来 wealth improvement,migrants 生活甚至没有 better off 这个 counterintuitive phenomenon 后,作者用独立的 Why? 来 emphasize 这个问题的 abnormality。言外之意是:按照 conventional urbanization theory,城市化应该带来 prosperity,但非洲的情况 defy 这个规律,这种 deviation 背后必有 deep-rooted causes。这个反问 serve as a transition,引导读者期待后文的 causal analysis,同时 reinforce 文章主旨关于 African urbanization 的 unique challenges。

  • 最高级表达暗示问题严重性

    P2
    The immediate problem is poverty.

    强调标记语 The immediate problem The fundamental issue The primary concern The main challenge The critical factor Above all Most importantly

    用 the immediate problem 来 introduce poverty,言外之意是作者在建立 causal hierarchy:poverty 不只是众多问题之一,而是 fundamental cause,其他所有 symptoms(lack of infrastructure、slow growth)都 stem from 这个 root。这个表达 imply 如果不 address poverty,其他 interventions 都是 treating symptoms rather than the disease。对文章主旨的作用是 establish 了分析框架,让读者理解后续讨论的 infrastructure problems、unproductive agriculture 等都是 poverty 的 manifestations。

  • 唯一例外强调普遍问题

    P2
    With the exception of South Africa, the only light rail metro system in sub-Saharan Africa is in Addis Ababa, Ethiopia.

    例外标记语 With the exception of Except for Apart from Other than Save for Excluding The only

    提到整个 sub-Saharan Africa 除了 South Africa 只有 Addis Ababa 有 light rail,言外之意是 modern public transportation infrastructure 在该地区几乎 non-existent。这个 exception 不是 showcase success,而是 underscore 整个地区的 infrastructure deficit 有多严重。对文章主旨的作用是 provide concrete evidence 支持 poverty leads to inadequate infrastructure investment 的论点,让抽象的 lack of investment 变得 tangible and shocking。

  • 对比暗示非洲发展路径异常

    P3
    In other parts of the world, increasing agricultural productivity and industrialization went together. But African cities are different.

    转折对比类 But However Yet In contrast On the other hand Unlike Whereas

    通过 contrast 世界其他地区的 agriculture-industrialization synergy 和 African cities 的 different pattern,言外之意是非洲 missed 了正常的 development pathway。But African cities are different 不只是 stating a fact,而是 imply 这种 difference 是 problematic 且 explain 为什么 urbanization 没有带来 prosperity。对主旨的作用是 provide structural explanation:非洲城市化 based on consuming natural resources 而非 productive transformation,这种 abnormal pattern 是 lack of economic growth 的 root cause。

  • 负面频率词暗示系统性问题

    P3
    They are too often built around consuming natural resources.

    频率强化语 too often frequently repeatedly consistently commonly typically usually

    说 African cities too often built around consuming natural resources,言外之意是这种 extractive model 已经成为 default pattern,不是 occasional mistake。Too often 暗示这是 systematic failure 源于 structural incentives 而非 random choices。对主旨的作用是 explain 为什么 urbanization 持续 fail to generate prosperity:城市 economic model 本身就是 fundamentally flawed,built on extraction rather than production,这种 structural problem 难以通过 incremental improvements 解决。

  • 条件句暗示理想与现实差距

    P4
    If that income were better taxed, it might provide the revenue for better infrastructure. If city leaders were more accountable to their residents, they might favour projects designed to help them more.

    条件假设类 If Were Should Provided that Assuming In case On condition that

    连续使用 if clauses 描述 better taxation 和 more accountable leaders,言外之意是这些 conditions 目前都 not in place。作者不是真的 suggesting 这些是 viable solutions,而是 pointing out 即使有这些 improvements,还有 yet even 引导的更大障碍。这些 conditionals 实际上是 pessimistic,暗示 governance problems 和 population growth 使得 meaningful progress 极其困难。对主旨的作用是 conclude with realistic assessment:虽然有 potential interventions,但 fundamental challenges 太过 overwhelming,非洲城市困境 likely to persist。

  • 让步转折强化悲观结论

    P4
    Yet even as new roads are built, new people arrive.

    让步转折类 Yet even as Even though Although Despite In spite of While Nonetheless

    用 yet even as 承认 infrastructure improvements 的同时指出 population growth 抵消进展,言外之意是问题处于 self-perpetuating cycle,任何 improvements 都被 demographic pressure overwhelm。这不是说 don't try,而是说 fundamental challenge(高速人口增长)使得 incremental solutions 难以 catch up。对主旨的作用是 provide final, sobering assessment:即使有 better policies,非洲城市面临的 structural obstacles 如此 formidable,短期内难以 achieve 其他地区那样的 urbanization-driven prosperity。这个言外之意 reinforce 全文的 pessimistic tone。

AUTHOR ATTITUDE · 作者态度

作者态度：消极批判

结论先行：本文作者态度为消极批判（ concerned and critical）。下面是按步骤还原的判断过程与文中的态度信号词。

  1. 问题导向式开篇 P1

    在 argumentative essay 中，作者用 problem-focused questions 开篇，通常表明他们对 status quo 持 critical stance。这种 questioning tone 为后续的 negative analysis 奠定基础，帮助我们预判作者会对问题进行 critical examination。

  2. 段落主旨负面化 P2 P3

    Topic sentences 在 argumentative writing 中承载 core arguments。当连续的 topic sentences 都 focus on problems、deficiencies 和 negative features 时，这清晰表明作者在 building a critical case。这种 consistent negative framing 是判断 critical attitude 的 reliable indicator。

  3. 负面词汇高频 P1 P2 P3

    在 critical argumentation 中，作者会 deliberately choose words with negative associations 来 reinforce their critique。这些 emotionally resonant terms 不仅 describe problems 而且 evoke concern，让读者 share the author's worried perspective。Word choice 是 attitude 最直接的 linguistic marker。

  4. 方案后的转折 P4

    在 problem-solution essay 中，结尾的 tone 很关键。如果作者提出 solutions 后立即 acknowledge obstacles 或 express doubt about effectiveness，说明他们的 concern 是 deep-rooted 的。这种 cautious ending 而非 confident conclusion 证实了 critical and worried attitude 贯穿全文。

  5. 多层证据一致性 P1 P2 P3 P4

    判断 author's attitude 需要 synthesize 所有 textual evidence：从 opening question 到 closing caveat，作者 maintain 了一个 unified critical voice。这种 consistency across different levels（structure、word choice、tone）确证了 concerned and critical 是作者的 overarching attitude。

文中的态度信号词

  • slums P1

    "Slums" 这个词带有 strong negative connotation，作者用它来 characterize 大多数 urban Africans 的 living conditions，immediately establish 一种 sympathetic yet critical tone，表明作者对这种 undesirable reality 感到 concerned。

    同类词 poverty shantytown squalor deprivation destitution

  • not much better off P1

    这个 phrase 通过 comparison 强调 urbanization 并未带来 expected improvement，表达了作者对 migration outcomes 的 disappointment 和对 development pattern 的 critique。

    同类词 barely improved hardly better scarcely different marginally better little improvement

  • Why? P1

    这个 rhetorical question 作为段落结尾，create 一种 challenge 和 inquiry 的 tone，暗示作者认为 current situation 是 problematic 和 needs explanation，为后续 critical analysis 设置 framework。

    同类词 What's wrong? How come? What explains this? Why so?

  • immediate problem P2

    "Immediate problem" 这个 problem-labeling phrase 直接 categorize poverty 为 pressing issue，reflect 作者对 severity 和 urgency 的 recognition，establishing 一种 concerned 和 problem-focused tone。

    同类词 urgent issue pressing concern critical challenge serious difficulty grave matter

  • unable to cope P2

    这个 inability expression 强调 infrastructure 的 inadequacy，convey 作者对 systemic failure 的 concern 和对 government capacity 的 implicit criticism。

    同类词 cannot handle fail to manage inadequate for insufficient to deal with overwhelmed by

  • keep investors away P2

    这个 consequence phrase 描述 negative economic impact，作者用它来 highlight vicious cycle，expressing concern about long-term development prospects。

    同类词 deter investment discourage funding drive away capital repel investors scare off business

  • too often P3

    "Too often" 表达 frequency + negative judgment 的 combination，作者用它来 criticize the prevalence of problematic patterns，showing frustration with systematic issues。

    同类词 frequently all too common typically usually predominantly

  • cronyish P3

    "Cronyish" 是 strongly pejorative term，作者用它来 condemn governance quality 和 business practices，expressing moral disapproval beyond mere economic critique。

    同类词 corrupt nepotistic patronage-based clientelist favor-driven

  • broadly unproductive P3

    这个 sweeping negative assessment 用 "broadly" 来 generalize agricultural sector 的 failure，reflecting author's concern about foundational economic weaknesses。

    同类词 generally inefficient largely ineffective mostly unproductive widely underperforming systemically weak

  • consuming P3

    "Consuming" 在这个 context 中带 negative connotation of depletion，作者用它来 contrast with productive development，implicitly criticizing unsustainable growth model。

    同类词 depleting extracting draining exhausting using up

  • Yet P4

    "Yet" 这个 adversative conjunction 引入 contrasting limitation，作者用它来 undermine preceding hopeful suggestions，maintaining overall concerned and skeptical tone。

    同类词 However But Nevertheless Nonetheless Still

  • difficult to keep up P4

    这个 difficulty expression 作为文章 closing note，leave readers with sense of ongoing challenge 和 uncertainty，cementing author's worried and critical perspective。

    同类词 hard to match challenging to cope struggle to maintain pace unable to stay abreast

GENRE · 速判体裁

30 秒判定这是一篇议论文

体裁决定读法与出题套路。以下判断步骤与标志词全部以本文为例，可直接迁移到其他英语四级 真题文章。

如何快速判断这是一篇议论文？

  1. 开篇设问引发议题 P1

    这篇文章在 第1段 的结尾直接抛出 'Why?' 这个 interrogative sentence，这是典型的 argumentative essay 特征。说明文通常是 present facts 或 describe phenomena，而新闻报道更倾向于用 declarative statements 来 report events，不会用这种 rhetorical question 来 engage readers。

  2. 因果分析链条 P2 P3

    第2段 和 第3段 都在 analyze causes，使用了大量的 causal connectors 比如 'That means'、'Without'、'in turn' 等，并且 present reasoning 来 explain the problem。说明文通常只是 describe what something is，新闻报道主要是 report what happened，都不会有这么 in-depth 的 causal analysis。

  3. 方案建议提出 P4

    第4段 开头直接问 'So what can be done?' 然后 propose various solutions 比如 better taxation、more accountability 等。这种 problem-solution structure 是 argumentative writing 的 typical pattern。说明文不会 suggest actions，新闻报道也只是 report facts 而不会 advocate for solutions。

  4. 问题-分析-对策三段式 P1 P2 P3 P4

    这篇文章完整地 demonstrate 了 argumentative structure：第1段 问 'Why?'，第2段-3 用 cause-effect chains 来 explain，第4段 讨论 'what can be done'。这种 三段式逻辑架构 是议论文的 hallmark，完全不同于说明文的 descriptive structure 和新闻报道的 inverted pyramid structure。

哪些词暴露了议论文体裁？

  • Why? P1 问题引导词 How? What can be done? So what? But why is this the case? The question is
  • The immediate problem is P2 论点引入词 The main issue is The key challenge lies in The fundamental difficulty is The core problem At the heart of the matter
  • But P3 对比转折词 However Yet Nevertheless In contrast On the contrary
  • So what can be done? P4 方案引导词 What should be done? How can we address this? What is the solution? The answer lies in We must
  • though P4 让步转折词 although even though despite in spite of while
  • might P4 推测建议词 could should would may ought to
  • Yet P4 对比转折词 Still Nonetheless Even so That said At the same time
SENTENCE INSIGHTS · 句子精讲

10 句真题句逐层精讲

下列真题句各有独立的句子解析页——中文翻译、结构树逐层拆解、成分与时态、考点讲解与真题高频词。点击句子进入完整解析。

FAQ · 常见问题

关于 2017年12月英语四级真题第2套 Part III Section C (1) 的常见问题

2017年12月英语四级真题第2套 Part III Section C (1) 文章的主旨是什么？
非洲城市正在快速城市化,但缺乏相应的经济增长,这是由于贫困、基础设施投资不足,以及经济以自然资源为中心而非生产性农业和工业化。虽然更好的税收和负责任的治理可能有所帮助,但人口增长速度超过了发展努力。（英文表述：African cities are rapidly urbanizing without corresponding economic growth due to poverty, inadequate infrastructure investment, and economies centered on natural resources rather than productive agriculture and industrialization. While better taxation and accountable governance could help, population growth outpaces development efforts.）
2017年12月英语四级真题第2套 Part III Section C (1) 文章是什么体裁？难度如何？
体裁为议论文，作者立场是消极批判（concerned and critical）。CEFR 难度 C1，全文 345 词、4 段；在英语四级全部 511 篇真题文章中，C1 级共 163 篇（占 32%）。
2017年12月英语四级真题第2套 Part III Section C (1) 文章的篇章结构是怎样的？
全文 4 段按议论文骨架分为 4 个意群：引言 · 第1段——非洲城市化困境的提出；分论点 · 第2段——贫困导致基础设施投资不足；分论点 · 第3段——经济结构失衡阻碍发展；结论 · 第4段——解决方案探讨与局限性。
2017年12月英语四级真题第2套 Part III Section C (1) 文章的作者态度是什么？
作者态度是消极批判（concerned and critical）。判断路径：问题导向式开篇 → 段落主旨负面化 → 负面词汇高频 → 方案后的转折 → 多层证据一致性；文中的态度信号词包括 slums（第1段）、not much better off（第1段）、Why?（第1段）、immediate problem（第2段）、unable to cope（第2段）、keep investors away（第2段）、too often（第3段）、cronyish（第3段）、broadly unproductive（第3段）、consuming（第3段）、Yet（第4段）、difficult to keep up（第4段）。
2017年12月英语四级真题第2套 Part III Section C (1) 文章中有哪些值得积累的生词？
按文中出现顺序共 5 个：indisputable（无可争辩的,确定无疑的）、slum（贫民窟,条件恶劣的城市居住区）、liveable（宜居的,适合居住的）、cronyish（任人唯亲的,基于私人关系的）、accountable（负有责任的,应作解释的），每个词的词义都可以由文中上下文线索推断得出。

本页数据最后更新：