先讀框架：主旨先於細節
7 分鐘
Academic exam passages are engineered: the first paragraph introduces a topic and usually ends by signaling the passage's direction; each body paragraph opens with a sentence stating its job; the details exist to support that sentence. Skimming is not reading fast — it is reading only the frame: the full first paragraph, the first sentence of each body paragraph, and the final two sentences. This takes about 90 seconds and answers three questions: What is the topic? What does each paragraph do? Where is everything located? You are building the map you will navigate with while answering questions.
學術類考試文章是精心設計的：第一段引入話題，通常在結尾點明文章走向；每個主體段的首句說明本段的任務；細節都是為這一句服務的。略讀不是快速地讀，而是只讀框架：完整的第一段、每個主體段的首句、以及最後兩句。這大約需要 90 秒，並回答三個問題：話題是什麼？每一段在做什麼？各個資訊在哪裡？你是在繪製答題時用來導航的地圖。
例題講解
First sentences of a five-paragraph passage: (1) "Cities are consistently warmer than the rural areas that surround them…" (2) "The most important cause is the replacement of vegetation with paved surfaces." (3) "The geometry of cities intensifies the effect." (4) "The consequences are not evenly shared." (5) "Cities are experimenting with remedies."
From five sentences you already know the passage's architecture: definition → cause 1 → cause 2 → consequences → solutions. Now suppose a question asks why the effect is strongest at night. "Strongest at night" is about how the effect works — so it must live in paragraph 2 or 3, the cause paragraphs. You go directly there instead of re-reading everything. That location step is the entire payoff of skimming.
只憑五句話，你已經知道文章的結構：定義 → 原因一 → 原因二 → 影響 → 對策。現在假設有道題問：為什麼這一效應在夜間最強？「夜間最強」關乎效應的機制——所以答案一定在第二或第三段（原因段）。你直接去那裡，而不是重讀全文。這個「定位」步驟就是略讀的全部回報。