懒笔记
2020年12月英语四级真题第2套 Part III Section C (2)
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2020年12月英语四级真题第2套 Part III Section C (2)

说明文 · 阅读理解（四选一） · 真题文章逐层精读

本页是 2020年12月英语四级真题第2套 Part III Section C (2) 文章的精读视角页——这篇说明文全文 338 词、4 段，CEFR 难度 C1（C1 级在英语四级文章中占 32%），作者立场为「客观中立」；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2020年12月英语四级真题第2套 Part III Section C (2) 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。

Forests in countries like Brazil and the Congo get a lot of attention from environmentalists, and it is easy to see why. South America and sub-Saharan Africa are experiencing deforestation on an enormous scale: every year almost 5 million hectares are lost. But forests are also changing in rich Western countries. They are growing larger, both in the sense that they occupy more land and that the trees in them are bigger. What is going on?

Forests are spreading in almost all Western countries, with the fastest growth in places that historically had rather few trees. In 1990 28% of Spain was forested; now the proportion is 37%. In both Greece and Italy, the growth was from 26% to 32% over the same period. Forests are gradually taking more land in America and Australia. Perhaps most astonishing is the trend in Ireland. Roughly 1% of that country was forested when it became independent in 1922. Now forests cover 11% of the land, and the government wants to push the proportion to 18% by the 2040s.

Two things are fertilising this growth. The first is the abandonment of farmland, especially in high, dry places where nothing grows terribly well. When farmers give up trying to earn a living from farming or herding, trees simply move in. The second is government policy and subsidy. Throughout history, governments have protected and promoted forests for diverse reasons, ranging from the need for wooden warships to a desire to promote suburban house-building. Nowadays forests are increasingly welcome because they suck in carbon pollution from the air. The justifications change, the desire for more trees remains constant.

The greening of the West does not delight everyone. Farmers complain that land is being taken out of use by generously subsidised tree plantations. Parts of Spain and Portugal suffer from terrible forest fires. Others simply dislike the appearance of forests planted in neat rows. They will have to get used to the trees, however. The growth of Western forests seems almost as unstoppable as deforestation elsewhere.

PARAGRAPHS · 逐段精读

4 段逐段主旨与解读

逐段拆解2020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

    A Surprising Western Forest Trend

    The paragraph introduces the striking expansion of forests in Western countries against global deforestation.

    本段承担文章的 opening function：它用 developing regions 的森林损失反衬 Western countries 的森林增长，从而提出全文需要回答的核心问题，即这种 expansion 为何会发生。

    抓住转折后的设问
  2. P2

    Evidence of Forest Expansion

    The paragraph demonstrates the widespread and rapid expansion of forests across Western countries with examples and statistics.

    本段为文章主旨提供事实基础：它把首段提出的 Western forest growth 从一个值得注意的现象，发展为有跨国数据支撑的 widespread reality，并为下一段解释 causes 做准备。

    数据共同证明扩张
  3. P3

    Why Western Forests Are Growing

    The paragraph explains that farmland abandonment and government support are the two main causes of Western forest expansion.

    本段是全文的 explanatory core：它直接回答首段“What is going on?”，并完整落实文章主旨中 farmland abandonment、government policies 和 carbon absorption 这几项关键信息。

    锁定两大增长原因
  4. P4

    Objections but Continued Growth

    Despite various objections, the expansion of Western forests is likely to continue and contrasts with deforestation elsewhere.

    本段承担文章的 closing function：它补充森林扩张的代价与争议，使论述更 balanced，同时以“仍将持续”的判断收束全文，并再次照应西方增林与其他地区毁林的鲜明对比。

    异议之后看结论
SELF CHECK · 段落自检题

4 道逐段细节自检题

针对2020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 rich Western countries change

    What change is taking place in rich Western countries?

    • A They are losing nearly 5 million hectares of forest every year.
    • B Their governments are ending all forest protection programmes.
    • C Their forests are expanding in area and becoming larger.
    • D Their forests are shrinking because trees are being cut down.
    • E They are replacing forests with farmland and pasture.
    • F They are concentrating on forests in Brazil and the Congo.
    显示答案与解析 收起答案与解析

    正确答案：C

    正确项完整对应两层并列信息：forests occupy more land 对应 expanding in area，trees are bigger 对应 becoming larger。命题人把原文的两个并列维度压缩为一个概括句，既保留范围，也保留程度。障碍在于考生容易只记住 forests are growing，却漏掉 land 和 trees 两个不同层面的增长。

    双槽趋势核验 时间极紧时，直接抓题干中的 rich Western countries，回读 第1段 中 But 后的一个信息单元，不必通读全文。随后采用“双槽核验”：把正确项拆成 area 与 larger 两槽，只有同时填满两槽的选项才保留；凡是只谈 deforestation、政府或其他地区的选项立即删去。

  2. 第 2 段 定位词 forest expansion Western countries

    What is true about forest expansion in Western countries?

    • A Spain has remained 28% forested since 1990.
    • B Greece and Italy have both increased from 32% to 26%.
    • C Ireland was almost completely forested when it became independent.
    • D The fastest growth occurs where forests were historically scarce.
    • E The Irish government plans to reduce forest cover to 1% by the 2040s.
    • F Forest land is declining in America and Australia.
    显示答案与解析 收起答案与解析

    正确答案：D

    该项是对段落总述中 fastest growth 与 historically had rather few trees 的准确同义改写。historically scarce 对应 historically had rather few trees，没有扩大范围，也没有改动比较级关系。障碍在于后文有大量 percentages，考生可能执着于计算数字，却忽略作者已经直接给出的规律判断。

    总述压过数字 先用 Western countries 和 forest expansion 锁定 第2段，再不读全部数字，优先扫描段首的总括句及含 fastest、historically 的比较结构。将正确项视为“总述复写项”：它必须能被后面的多国数据共同支持；只服务于单个数字、且改动 from-to 或年份的选项可快速排除。

  3. 第 3 段 定位词 two main forces behind forest growth

    What are the two main forces behind forest growth?

    • A More profitable farming and reduced government support.
    • B The need for wooden warships and suburban house-building.
    • C Forest fires and farmers' complaints.
    • D Carbon pollution and larger trees.
    • E Farmland abandonment and government policy with subsidies.
    • F Deforestation in Africa and environmental concern in Brazil.
    显示答案与解析 收起答案与解析

    正确答案：E

    正确项分别对应 first 中的 abandonment of farmland 和 second 中的 government policy and subsidy，两个名词短语平行呈现，完整满足 two 的数量要求。障碍在于后文还提到 carbon pollution、wooden warships 和 house-building，它们分别是当代理由或历史理由，不能替代两项直接原因。

    首尾括号取因 从 two main forces 直接锁定 第3段，视觉扫描 Two things、first、second 三个路标即可。采用“括号法”：只把 first 后的核心名词短语和 second 后的核心名词短语装入答案括号；正确项必须一左一右各对应一项，任何加入历史例证、结果或抱怨的选项均不入括号。

  4. 第 4 段 定位词 Western forests growth of Western forests

    What does the author suggest about the growth of Western forests?

    • A It will stop because farmers oppose tree plantations.
    • B It has caused all farmland in Spain and Portugal to disappear.
    • C It is welcomed by everyone because it reduces carbon pollution.
    • D It mainly results from the appearance of forests in neat rows.
    • E It is less serious than deforestation elsewhere.
    • F It is likely to continue despite opposition and problems.
    显示答案与解析 收起答案与解析

    正确答案：F

    该项准确整合了让步和结论：despite opposition and problems 对应 farmers' complaints、fires 与 dislike，likely to continue 对应 seems almost unstoppable。它没有把 unstoppable 机械夸张为绝对必然，而用 likely 保留 seems 的推断语气。障碍在于考生容易被多个负面例子占据注意力，误以为作者预测增长会停止。

    让步天平判势 用 author suggest 和 Western forests 直接定位 第4段，然后从段末倒读，先抓 however 后含 seems 的结论句。采用“让步天平法”：左盘放 objections，右盘放作者预测；正确项必须同时承认左盘存在，却把趋势判断落在右盘。只重复负面现象的选项，不必细读即可排除。

STRUCTURE · 篇章结构

4 个意群的说明文骨架

按说明文 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. P1

    引出对比现象

    这个 opening paragraph 通过 contrast 的手法，先提到 Brazil 和 Congo 的 deforestation 问题吸引 attention，然后用 But 转折引出 Western countries 的 opposite trend，forests 正在 expand，both in area 和 tree size，最后用 What is going on? 这个 rhetorical question 来 engage readers 并引出下文的 explanation。

    作为 expository text 的 introduction，这个意群通过 present 一个 surprising phenomenon 来 establish 文章的 topic focus，用发展中国家的 deforestation 作为 background contrast，让 Western forests 的 growth 显得更 noteworthy，从而 motivate 读者继续阅读来 understand 这个 trend 背后的 reasons。

    提出森林扩张现象
  2. P2

    量化扩张趋势

    这个 paragraph 用 concrete statistics 和 specific examples 来 support 前面提到的 forest expansion。通过 list 多个 Western countries（Spain, Greece, Italy, America, Australia, Ireland）的 forest coverage data，用 time comparison（1990 vs now）来 demonstrate 这个 growth trend 是 widespread 和 substantial 的，其中 Ireland 从 1% 到 11% 的 dramatic increase 作为 most astonishing case 来 emphasize。

    在说明文的 body development 中，这个意群通过 provide factual evidence 来 substantiate 主旨中的 significant forest expansion 这个 claim。用 multiple countries 的 quantitative data 不仅 prove 现象的 existence，还 illustrate 它的 geographic scope 和 magnitude，让 abstract statement 变成 concrete reality，增强文章的 credibility。

    用数据证实扩张规模
  3. P3

    解释扩张原因

    这个 explanatory paragraph 用 Two things are fertilising this growth 作为 topic sentence，明确 identify 了 forest expansion 的 two main causes。First 是 farmland abandonment，especially 在 high, dry areas 这些 agriculturally marginal land，farmers 放弃后 trees naturally move in。Second 是 government policy and subsidy，虽然 historical reasons 各异，但 nowadays 主要是因为 forests 能 absorb carbon pollution，所以 governments 持续 promote tree planting。

    在说明文的 causal analysis section，这个意群直接 address 主旨中的 due to farmland abandonment and government policies 这部分。通过 systematic explanation 这两个 causes，文章从 descriptive level（what is happening）深入到 analytical level（why it happens），让读者 understand 这个 trend 的 underlying mechanisms，这是 expository writing 的 core function。

    揭示两大驱动因素
  4. P4

    呈现争议与趋势

    这个 concluding paragraph 补充了 balanced perspective，acknowledge 并非 everyone 都 welcome 这个 greening trend。它 mention 了 negative aspects：farmers 的 complaints about subsidised plantations，Spain 和 Portugal 的 forest fire risks，以及 aesthetic concerns about tree rows。但通过 However 转折和 final sentence，强调这个 trend seems almost as unstoppable as deforestation elsewhere，既 echo 了开头的 contrast，又给出 definitive conclusion about the trend's inevitability。

    在说明文的 conclusion section，这个意群通过 present contrasting viewpoints 来 demonstrate objectivity，同时用 unstoppable 这个 strong term 来 reinforce 主旨中的 significant expansion 这个 core message。它还用 parallel structure（Western forests growth vs deforestation elsewhere）来 circle back 到 opening contrast，给文章带来 structural closure，这是 well-organized expository text 的 characteristic。

    补充争议确认趋势
MAIN IDEA · 速判主旨

6 步定位这篇文章的主旨

不读完全篇也能锁定主旨——以下 6 步按2020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. 首段转折词后锁定主题 P1

    说明文常用 contrasting approach 来突出 focal point，第一段的 But 后面往往揭示 author's real focus，这种 structural signal 能帮我们快速锁定文章要讨论的 main subject 而非 background information

  2. 首段末尾核心问题 P1

    说明文的 primary purpose 是 to explain a phenomenon，首段的 interrogative sentence 往往直接点明文章要解释的 core question。这个 guiding question 就是整篇文章 subsequent paragraphs 要回答的对象，所以它能精准揭示 article's main purpose

  3. 主体段首句解答结构 P2 P3

    说明文的 body paragraphs 必然服务于 explaining the central question，每个段落的 opening sentence 通常揭示该段的 explanatory angle。如果多个段落的 topic sentences 都围绕同一个 phenomenon 展开不同 facets of explanation，就能确认文章主旨

  4. 数据与地域范围标记 P2 P3

    说明文依赖 factual support 来建立 authority，数据 (percentages, years, hectares) 和 geographical references (country names, regions) 不仅增强 persuasiveness，还界定了现象的 spatial and temporal boundaries。这些 specifics 能帮我们判断文章主旨的 exact scope

  5. 末段综合验证主旨 P4

    说明文的 ending 往往包含 overarching conclusion 或 broader implication，这个 synthesizing statement 会将前面的 explanatory details 整合成一个 unified message。检查结尾能验证我们对主旨的理解是否准确，also helps distinguish between main idea and supporting details

  6. 多层信号整合判断 P1 P2 P3 P4

    说明文主旨必须回答 what is happening, why it happens, where/when it happens 三个层面。通过前面四个步骤，我们从 structural markers 获得 what，从 causal explanations 获得 why，从 geographical and statistical details 获得 scope，结尾段提供 overall assessment。只有整合这些 dimensions，才能准确概括主旨

主旨信号词 What is going on? P1 spreading P2 fertilising P3 abandonment P3 government policy and subsidy P3 suck in carbon pollution P3

MAIN IDEA · 主旨

这篇文章在说什么

西方国家正经历显著的森林扩张,这源于农田废弃和政府推广植树以吸收碳的政策,与巴西和刚果等发展中地区持续的森林砍伐形成鲜明对比。
Western countries are experiencing significant forest expansion due to farmland abandonment and government policies promoting tree growth for carbon absorption, contrasting sharply with ongoing deforestation in developing regions like Brazil and Congo.
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。

  • hectare 土地面积单位（公顷）

    让我们把这些 clues 串联起来。首先，enormous scale 的 deforestation 需要用具体的数字来体现，而 5 million hectares 就是这个 quantification。其次，文章在讨论 forest 面积变化时，既用 percentage（如 28% 到 37%），也用 hectare，说明两者都是衡量 land area 的方式。Hectare 前面有具体数字 million 修饰，后面紧跟 are lost，表明它是一个可以被'失去'的、可量化的 area unit。综合这些线索，hectare 显然是一个 land area 的 measurement unit。

    数字+对象+平行表达三角定位
  • fertilise 促进、助长

    我们先从 word formation 入手：fertile（肥沃的）+ -ise = 使肥沃。然后看 context：Two things are fertilising this growth，后面具体列举了导致 forest expansion 的 two factors。这个 structure 表明 fertilising 描述的是'促成、推动'的作用。最后，考虑 figurative meaning：文章把 forest growth 比作 plant growth，那些 contributing factors 就像'fertiliser'（肥料）。三条线索汇聚，fertilising 在这里是'促进、助长'的意思，是从 literal agricultural meaning 引申到 abstract process 的 metaphorical usage。

    词根分解+句法关系+隐喻识别
  • subsidy 补贴、资助

    让我们整合这些 evidence。首先，subsidy 和 government policy 并列，说明它是 government 的一种 action 或 measure。其次，subsidised tree plantations 用 generously 修饰，表明涉及 money 或 financial resources。最重要的是，farmers complain 说明 subsidy 创造了 economic advantage，使得 tree planting 比 traditional farming 更 profitable，导致 land use change。综合这些线索，subsidy 是 government 提供的 financial support 或 economic assistance，目的是 encourage specific activities（这里是 tree planting）。

    并列定位+词族追踪+效果反推
  • warship 军舰、战舰

    从 morphology 角度，war + ship 的组合已经很明确：战争用的船只。Context 进一步确认：throughout history, governments 需要 wooden warships，这解释了为什么 governments protect forests—因为需要 timber（木材）for shipbuilding。历史上，naval power（海军力量）对国家很重要，wooden ships 是主要的 military vessels，所以 governments 要确保 sufficient forest resources for ship construction。两条线索 converge（汇聚）到同一个意思：warship 就是军用船只、战舰。

    复合词切分+成分组合+语境验证
  • astonishing 令人震惊的、令人惊讶的

    让我们 synthesize 这些线索。Morphologically，astonish 意为'使震惊'，加上 -ing 形成形容词'令人震惊的'。Contextually，most astonishing 用最高级形式凸显 Ireland 的 case 最为 extraordinary。数据支持这个判断：1% 到 11% 的增长远超其他国家的变化幅度（如 Spain 的 28% 到 37%）。Perhaps 这个词也暗示作者认为这个 fact 会让 readers feel surprised。所有线索指向同一个意思：astonishing 表示'令人惊讶的、令人震惊的'，强调程度之深超出 normal expectation。

    词根义+强度标记+支撑证据
RHETORIC · 修辞手法

5 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。

  • 列数字

    P1 P2

    作者通过 precise numerical data 来 quantify 森林变化的 extent。比如 South America 和 sub-Saharan Africa 每年失去 almost 5 million hectares 的森林，而 Spain 的 forested area 从 1990 年的 28% 增长到现在的 37%，Greece 和 Italy 从 26% 到 32%，Ireland 更是从 1922 年的 roughly 1% 飙升到现在的 11%。这些 specific figures 让 forest expansion 的 magnitude 变得 tangible and convincing，strong support 了文章的 central argument——Western countries 正经历显著的 forest growth，形成与 developing regions 的 sharp contrast。

    信号词 almost million hectares % proportion roughly over the same period from...to... by the 2040s

    仿写： 当你需要 prove 某个 trend 或 phenomenon 时，问自己：What specific numbers can I use? 比如描述 urban development，不要只说 'rapid growth'，而是说 'the population increased from 2 million to 5 million in just 10 years'。模版：[主题] + [具体数字] + [时间范围/对比对象]。例如：'Solar energy capacity expanded from X% to Y% between [year] and [year]' 或 'Company A's market share grew from X to Y, while competitor B remained at Z'。

  • 作比较

    P1 P4

    文章构建了一个 fundamental contrast：developing countries (Brazil, Congo) 的 massive deforestation versus Western countries 的 forest expansion。开篇就用 'But' 这个 turning point 来 juxtapose two opposing trends——South America 和 sub-Saharan Africa 每年失去近 500 万 hectares，而 rich Western countries 的 forests are growing larger in both 占地面积和 tree size。这个 stark comparison 不仅 highlight 了 geographical disparity，更重要的是它 frame 了整篇文章的 argumentative foundation，让 readers immediately grasp 这个 paradoxical global pattern，从而引发对 underlying causes 的 curiosity。最后一段再次用 'almost as unstoppable as deforestation elsewhere' 来 echo 这个 contrast，形成 structural coherence。

    信号词 but while whereas in contrast unlike however on the other hand conversely in comparison compared to as opposed to rather than

    仿写： 构建 effective comparisons 时，问自己：What's the most striking contrast? 选择能 maximum highlight your point 的 comparison objects。Structure 上可以用 'while/whereas A..., B...' 或 'unlike A, B...' 或 'A...but B...'。模版举例：'While [region/group A] experiences [negative trend with data], [region/group B] shows [opposite trend with data]' 或 'In contrast to [historical situation], [current situation] demonstrates [change]'。Key 是要让 comparison serve your thesis，不是为了 compare 而 compare。

  • 分类别

    P3

    作者在 第3段 clearly categorize 了 forest growth 的 two driving forces。用 'The first is...' 和 'The second is...' 这样的 explicit markers 来 organize causes into distinct categories：(1) farmland abandonment，especially in marginal lands where agriculture 不 viable；(2) government policy and subsidy，historically for different purposes 但 nowadays primarily for carbon absorption。这个 systematic classification 让 complex causation 变得 clear and digestible，帮助 readers understand 这不是 single-factor phenomenon，而是 multiple forces converging 的结果。这种 structured explanation strong support 了文章对 'What is going on?' 这个 opening question 的 answer。

    信号词 The first The second Two things one another types of categories can be divided into fall into consist of include range from...to

    仿写： 进行 categorization 时，确保 categories are mutually exclusive 且 collectively exhaustive。Ask yourself: What are the fundamental types/causes/aspects? 使用 clear numerical markers ('first', 'second') 或 categorical labels。模版：'[Phenomenon] can be attributed to [number] main factors. The first is [category A with explanation]. The second is [category B with explanation].' 或 'There are [number] types of [subject]: [Type 1] which [characteristic], and [Type 2] which [characteristic]'。记住要给每个 category sufficient detail 来 distinguish it from others。

  • 举例子

    P2

    文章通过 multiple concrete examples 来 illustrate forest expansion 的 geographical breadth。在 第2段，作者 specifically mention Spain, Greece, Italy, America, Australia，最后 highlight Ireland as 'perhaps most astonishing' example。这些 specific country cases 把 abstract claim 'forests are spreading in almost all Western countries' 变成了 tangible reality。Ireland 的 case especially powerful——从 1922 年的 1% 到现在的 11%，这个 dramatic transformation serve as compelling evidence。通过这些 varied examples across different continents，作者 demonstrate 这不是 isolated phenomenon 而是 widespread trend，strong support 文章关于 Western forest expansion 的 central thesis。

    信号词 for example for instance such as like including take...as an example consider notably particularly in particular especially perhaps most astonishing

    仿写： 选择 examples 时要 strategic：pick cases that are representative yet compelling。问自己：Which example best illustrates my point? 可以用 'For example', 'For instance', 'such as', 'take...as an example' 来 introduce。模版：'[General statement]. For example/instance, [specific case with details]. [Another specific case if needed].' 或者 '[General claim] can be seen in [place/situation], where [specific details].' 记得要让 example 包含 concrete details (numbers, names, specifics) 而不只是 vague reference。可以用 'perhaps most notably/astonishingly' 来 highlight particularly strong examples。

  • 作诠释

    P1 P3

    文章在多处对 key concepts 进行 elaboration and explanation。在 第1段，作者 explain 'growing larger' by specifying 'both in the sense that they occupy more land and that the trees in them are bigger'，clarify 这个 term 的 dual meaning。在 第3段，explain 'abandonment of farmland' by adding 'especially in high, dry places where nothing grows terribly well' 和 'When farmers give up trying to earn a living'，这些 additional details 让 readers understand the specific conditions and process。同样地，解释 government policy 时用 'Throughout history...ranging from the need for wooden warships to a desire to promote suburban house-building. Nowadays...because they suck in carbon pollution'，trace historical evolution 来 clarify changing motivations。这些 interpretative explanations help readers grasp not just what is happening, but why and how，deepen understanding of the forest expansion phenomenon。

    信号词 in the sense that meaning that that is that is to say in other words specifically namely especially particularly ranging from...to because when

    仿写： 进行 interpretation 时，identify which terms or claims might be ambiguous or need context。Use phrases like 'in the sense that', 'meaning that', 'that is to say', 'specifically', 'in other words' 来 introduce clarification。模版：'[Statement], [interpretation marker] [elaboration with specific details]' 或 '[Concept], especially [specific conditions/examples that clarify]'。可以通过 adding context (historical, geographical), specifying conditions (when, where, under what circumstances), 或 explaining mechanisms (how it works, why it happens) 来 make your interpretation effective。Key 是 add meaningful detail without being redundant。

IMPLIED MEANING · 言外之意

5 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。

  • 发达国家森林问题被忽视

    P1
    Forests in countries like Brazil and the Congo get a lot of attention from environmentalists... But forests are also changing in rich Western countries.

    转折类 But but however yet nevertheless nonetheless on the other hand

    这个 but 的言外之意是：虽然 developing countries 的 deforestation 看起来更 dramatic 也更 widely discussed，但 Western countries 的 forest changes 同样 significant 且被 overlooked。它对文章主旨的作用是 establish the focus：作者要讨论的不是 commonly known 的热带雨林问题，而是 less publicized 的发达国家 forest expansion phenomenon，这个 strategic shift 为整篇文章的 analysis direction 奠定了基础

  • 爱尔兰森林增长最为显著

    P2
    Perhaps most astonishing is the trend in Ireland. Roughly 1% of that country was forested when it became independent in 1922. Now forests cover 11% of the land

    情态词 Perhaps most astonishing perhaps most astonishing most remarkable surprisingly notably strikingly extraordinarily

    Perhaps most astonishing 这个 phrase 的言外之意是：爱尔兰从 1% 到 11% 的 forest coverage increase 不仅是 numerical growth，更代表了 dramatic transformation 从 almost treeless 到 significantly forested。它对主旨的价值在于 provide the most extreme example 来 demonstrate Western forest expansion 的 scale 和 potential，这个 outlier case 强化了文章的 central argument：发达国家的 forestation 是个 substantial and ongoing trend

  • 政府动机多变但结果一致

    P3
    Throughout history, governments have protected and promoted forests for diverse reasons, ranging from the need for wooden warships to a desire to promote suburban house-building. Nowadays forests are increasingly welcome because they suck in carbon pollution from the air. The justifications change, the desire for more trees remains constant.

    对比类 The justifications change, the desire for more trees remains constant change...remains while...still although...constant despite changes...consistent vary...stable shift...endure

    这句话的言外之意是：虽然每个时代 promote forests 的 official reasons 看似 different（战舰用材、郊区建设、碳吸收），但这些只是 justifications 的 packaging，真正 consistent 的是政府对 forest expansion 的 inherent preference。对主旨的作用是 reveal the institutional momentum behind Western forestation：这不是 temporary policy response，而是 deeply rooted governmental tendency，这解释了为什么 forest growth seems almost unstoppable，也预示这个 trend 会 continue regardless of 具体理由如何 evolve

  • 反对声音无法阻挡趋势

    P4
    Farmers complain that land is being taken out of use... Parts of Spain and Portugal suffer from terrible forest fires. Others simply dislike the appearance of forests planted in neat rows. They will have to get used to the trees, however.

    转折类 however nevertheless nonetheless yet still even so that said

    However 引出的 they will have to get used to the trees 这句话的言外之意是：虽然有 various complaints（农民、火灾、美观问题），但这些 concerns 都不足以 reverse the trend，反对者只能 adapt 而非 change 现状。对主旨的作用是 reinforce the central thesis 的最后一环：Western forest expansion 不仅 happening，而且 almost as unstoppable as deforestation elsewhere，即使有 legitimate objections 也无法 alter this trajectory。这个 dismissive conclusion 呼应了文章开头对 phenomenon 的 observation，形成 complete argumentative loop

  • 西方造林与热带砍伐同样不可阻挡

    P4
    The growth of Western forests seems almost as unstoppable as deforestation elsewhere.

    对比类 almost as unstoppable as as...as almost as...as just as...as no less...than equally similarly unstoppable

    Almost as unstoppable as deforestation elsewhere 这个比较的言外之意是：西方的 forest expansion 具有和热带地区 deforestation 同等的 inevitability 和 momentum，两者虽然 direction 相反但都是 powerful systemic trends。对主旨的作用是提供 powerful concluding image：文章开头提到 developing countries 的 deforestation 众所周知且 dramatic，结尾用相同强度的词来 describe Western forestation，形成 striking symmetry，这不仅 reinforces 主旨关于 Western forest growth 的 significance，更暗示这是 global-scale transformation 的两个 complementary facets

AUTHOR ATTITUDE · 作者态度

作者态度：客观中立

结论先行：本文作者态度为客观中立（ cautiously optimistic and objective）。下面是按步骤还原的判断过程与文中的态度信号词。

  1. 对比结构定调 P1

    说明文作者通常在 first paragraph 建立 analytical framework，这里的 'But' 转折词和 'What is going on?' 这个 rhetorical question 显示作者对 Western forest growth 持有 curious 且 interested 的态度，而非 dismissive 或 critical。

  2. 数据呈现中性化 P2

    说明文中，当作者 present data without emotional modifiers 时，表明他们采取 neutral informative stance。注意这里用的是 'perhaps most astonishing'，这个 'astonishing' 是对 factual magnitude 的 acknowledgment，而非 personal approval 或 disapproval。

  3. 因果解释客观性 P3

    说明文的 explanatory sections 最能体现作者是否保持 neutrality。这里作者 objectively list 'abandonment of farmland' 和 'government policy' 作为 factors，用 'fertilising' 这个相对 positive 但 technical 的词，而不是 'driving' 或 'forcing'，显示 balanced perspective。

  4. 多角度呈现平衡 P4

    说明文作者如果真正 objective，会在 conclusion 部分 acknowledge counterarguments 或 complications。这里用 'does not delight everyone' 和 'will have to get used to' 显示作者既看到 positive trend 的 inevitability，也认识到它带来的 challenges，这是 nuanced objectivity 而非 one-sided enthusiasm。

  5. 整体信号综合 P1 P2 P3 P4

    说明文的态度判断需要 holistic assessment：如果全文的 structural pattern 是 present phenomenon → provide data → explain causes → acknowledge complexity，且语言保持 predominantly neutral with occasional mild positive notes，那么作者态度就是 'cautiously optimistic and objective'，这是学术性说明文的 typical stance when discussing environmental positive trends。

文中的态度信号词

  • astonishing P2

    这个词表达对 Ireland forest growth magnitude 的 factual surprise，但在说明文 context 中，'astonishing' 用来 emphasize statistical significance 而非 express personal approval，它 signals 作者认为这个 data point 值得 reader attention，是 objective emphasis 而非 subjective praise。

    同类词 remarkable striking impressive notable surprising

  • fertilising P3

    这是个 botanical metaphor，在 forest growth context 中是 domain-appropriate term，表达 'causing growth' 的 neutral causal relationship。虽然 'fertilising' 有 positive connotation，但作为 technical metaphor 而非 emotional praise，它 maintains objectivity while describing促进作用。

    同类词 nurturing fostering facilitating promoting enabling

  • does not delight everyone P4

    这个 understatement phrase 明确 acknowledge negative reactions，显示作者 aware of multiple perspectives。使用 'does not delight' 这种 mild negative expression 而非 'angers' 或 'disappoints'，体现 balanced tone，既不 dismiss critics 也不 amplify their concerns。

    同类词 not universally welcomed raises concerns has drawbacks brings challenges faces opposition

  • seems almost as unstoppable P4

    这个 predictive statement 用 'seems' 和 'almost' 进行 hedging，表达对 trend continuation 的 measured assessment。'Unstoppable' 本身是 strong word，但 'seems almost' 这种 double hedging 让表达保持 analytical caution，既 acknowledge momentum 又 avoid absolute claims。

    同类词 seems unstoppable appears inevitable looks set to continue shows no signs of slowing is likely to persist

  • What is going on? P1

    这个 rhetorical question 在 opening paragraph 建立 inquiry-based framework，显示作者采取 exploratory investigative approach 而非 argumentative stance。Question form 邀请 readers 一起 explore phenomenon，体现 neutral curiosity。

    同类词 What explains this? Why is this happening? How can this be? What accounts for this trend?

GENRE · 速判体裁

30 秒判定这是一篇说明文

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说明文？

  1. 现象+疑问句引导 P1

    第1段 开头就 present 了 forests changing in Western countries 这个 phenomenon，用的是 descriptive language（'forests are growing larger', 'trees are bigger'），最后用 'What is going on?' 引出要 explain 的对象。这不是 argue 某个观点，也不是 report 某个 event，而是要 explain 一个现象。

  2. 数据+原因解释 P2 P3

    第2段 用大量 specific statistics（'28% to 37%', '26% to 32%', '1% to 11%'）和 concrete examples（Spain, Greece, Italy, Ireland）来 illustrate 'forests are spreading' 这个现象的 extent 和 scale。第3段 明确列出 'Two things are fertilising this growth'，然后 explain 两个 causes（farmland abandonment 和 government policy）。这是典型的 expository structure，不是 persuasive argumentation。

  3. 客观中立陈述 P1 P2 P3 P4

    全文作者保持 detached observer 的 position，客观 present facts 和 reasons，没有强烈的 emotional language 或 persuasive rhetoric。即使 第4段 提到 'does not delight everyone' 和 complaints，作者只是 acknowledge different perspectives，最后用 'seems almost as unstoppable' 这种 factual prediction 结尾，而不是 advocate 某个 position。这是 informative 而非 persuasive 或 urgent 的 tone。

  4. 现象解释为主线 P1 P2 P3 P4

    这篇文章完美符合说明文的 three-step criteria：开头 present 'forests changing in Western countries' 这个 phenomenon 并引出 question；主体用 statistics 和 concrete examples 说明 extent（第2段），用 causes 说明 reasons（第3段），用 different perspectives 说明 implications（第4段）；全文 tone 保持 informative 和 neutral。这不是 argue 'we should/shouldn't plant trees'（议论文），也不是 report 'a forest fire just happened'（新闻），而是 explain 'why forests are growing in Western countries'（说明文）。

哪些词暴露了说明文体裁？

  • What is going on? P1 说明对象定义解释词 What is X? Why does this happen? How does it work? This phenomenon refers to... The reason is that...
  • Two things are fertilising this growth P3 说明顺序与例证词 Two things are... The first is... The second is... There are several reasons... Three factors contribute to...
  • ranging from... to... P3 事物属性功能描述词 including... such as... characterized by... consists of... involves...
  • Now forests cover 11% of the land P2 事物属性功能描述词 X% of Y is/was... covers X area occupy more land the proportion is... the growth was from X to Y
  • seems almost as unstoppable as P4 事物属性功能描述词 seems... appears to be... is likely to... tends to... is characterized by...
SENTENCE INSIGHTS · 句子精讲

5 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。

  • When farmers give up trying to earn a living from farming or herding, trees simply move in.
    第3段，第3句

    时间状语从句前置加主句的结构在四六级和考研阅读中高频出现，从句内动名词短语作宾语也是常考点，具有较强的代表性和迁移价值。

  • The greening of the West does not delight everyone.
    第4段，第1句

    涵盖主谓宾三大核心成分，主语中含介词短语作后置定语，可练习名词短语的修饰结构。但成分种类较单一，无状语、补语、同位语等其他成分，也无易错点如形式主语、双宾语等，训练价值中等偏下。

  • They will have to get used to the trees, however.
    第4段，第5句

    情态助动词加半助动词的结构（will have to）和固定短语动词（get used to）均为四六级和考研阅读中的常见搭配，具有一定代表性；但简单句本身在真题长难句中占比较小，嵌套和修饰成分的缺失降低了其作为典型练习句的迁移价值，整体典型性中等。

  • What accounts for our increasing desire for forests?
    第54题题干

    疑问句结构在四六级、考研阅读中较为常见，且短语动词 "account for" 是高频搭配；但本句过于简短，未涉及从句或复杂修饰，作为句式代表性略显单薄。

  • It will play a more and more important role in people's lives.
    第55题，B

    简单句的主谓宾结构配地点状语，是英语基本句式之一，常见但代表性中等，未涉及四六级或考研常考的复杂句式（如定语从句、状语从句、强调句等）

FAQ · 常见问题

关于 2020年12月英语四级真题第2套 Part III Section C (2) 的常见问题

2020年12月英语四级真题第2套 Part III Section C (2) 文章的主旨是什么？
西方国家正经历显著的森林扩张,这源于农田废弃和政府推广植树以吸收碳的政策,与巴西和刚果等发展中地区持续的森林砍伐形成鲜明对比。（英文表述：Western countries are experiencing significant forest expansion due to farmland abandonment and government policies promoting tree growth for carbon absorption, contrasting sharply with ongoing deforestation in developing regions like Brazil and Congo.）
2020年12月英语四级真题第2套 Part III Section C (2) 文章是什么体裁？难度如何？
体裁为说明文，作者立场是客观中立（cautiously optimistic and objective）。CEFR 难度 C1，全文 338 词、4 段；在英语四级全部 511 篇真题文章中，C1 级共 163 篇（占 32%）。
2020年12月英语四级真题第2套 Part III Section C (2) 文章的篇章结构是怎样的？
全文 4 段按说明文骨架分为 4 个意群：第1段——引出对比现象；第2段——量化扩张趋势；第3段——解释扩张原因；第4段——呈现争议与趋势。
2020年12月英语四级真题第2套 Part III Section C (2) 文章的作者态度是什么？
作者态度是客观中立（cautiously optimistic and objective）。判断路径：对比结构定调 → 数据呈现中性化 → 因果解释客观性 → 多角度呈现平衡 → 整体信号综合；文中的态度信号词包括 astonishing（第2段）、fertilising（第3段）、does not delight everyone（第4段）、seems almost as unstoppable（第4段）、What is going on?（第1段）。
2020年12月英语四级真题第2套 Part III Section C (2) 文章中有哪些值得积累的生词？
按文中出现顺序共 5 个：hectare（土地面积单位（公顷））、fertilise（促进、助长）、subsidy（补贴、资助）、warship（军舰、战舰）、astonishing（令人震惊的、令人惊讶的），每个词的词义都可以由文中上下文线索推断得出。

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