I will finish in 2 hours 跟 I will finish within 2 hours 兩句中文都翻成「我 2 小時內完成」——但英文意思完全不同。這種語感差異是 Band 7 跟 Band 6 的分水嶺。

為什麼是 Taiwanese 特有錯誤

中文「在」或「內」可以涵蓋三種英文介系詞，學生直接套上 in 就完事——結果講 I will come back in 30 minutes 對方以為你現在要走，30 分後才回來（但你其實想說「30 分鐘內會回來」）。

三字語感對照

| 介系詞 | 核心意思 | 範例 | 語感 | |--------|---------|------|------| | in | 一段時間之後（未來）或持續（過去） | I'll be back in 10 minutes. | 10 分鐘後才回來 | | within | 一段時間之內（上限）| I'll be back within 10 minutes. | 10 分鐘內，可能更快 | | during | 在某段時間期間（過程中任何時點或持續）| I slept during the flight. | 飛行過程中 |

逐個拆解

In（時間之後 / 持續）

  • 未來：See you in an hour.（一小時後）
  • 完成花的時間：I finished in 30 minutes.（花了 30 分鐘完成）
  • 時間區段：He did it in the morning.（早上做的）

Within（時間之內，上限）

  • 上限：Reply within 24 hours.（24 小時內）
  • 期限：Finish within the deadline.（期限內）
  • 比 in 更強調「不超過」

During（過程期間）

  • 事件過程：It rained during the match.（比賽過程中）
  • 時段期間：I travelled during summer.（夏天期間）
  • 後面接名詞或事件，不能接「時間長度」→ ❌ during 2 hours ✅ for 2 hours

❌ Wrong vs ✅ Correct

| ❌ Wrong | ✅ Correct | 解釋 | |----------|-----------|------| | I will reply in 24 hours maximum. | I will reply within 24 hours maximum. | 有 maximum 暗示上限 → within | | I slept in the flight. | I slept during the flight. | 過程中 → during | | I worked during 3 hours. | I worked for 3 hours. | 時間長度用 for | | Please submit in the deadline. | Please submit within the deadline. | 上限 / 期限 → within | | He called me during 6 pm. | He called me at 6 pm. | 時間點用 at | | I will finish during 2 hours. | I will finish in 2 hours. | 完成需要的時間 → in |

進階比較：In vs During

兩個都可以講「期間」，但：

  • ***In* + 名詞**：側重「時段」，比較中性

- In summer, the weather is hot.

  • ***During* + 名詞**：側重「過程」，強調事件進行中

- During the summer holidays, I travelled.（期間發生事件）

IELTS Writing Task 1 圖表描述：

  • Sales increased in 2020.（2020 這一年裡）
  • Sales increased during the pandemic.（疫情過程中）

兩個都對，但 during 更適合有明確事件的情境。

Quick Drill — 10 題填空（in / within / during / for / at）

  1. The exam will start ___ 10 minutes.
  2. Please finish the test ___ one hour.
  3. I fell asleep ___ the film.
  4. He has lived here ___ 5 years.
  5. She called me ___ noon.
  6. Submit your application ___ Friday.（期限）
  7. I usually exercise ___ the evening.
  8. ___ the meeting, my phone rang.
  9. The project will be completed ___ 6 months.（花費時間）
  10. ___ my childhood, we lived abroad.

Answer Key

| # | 答案 | 解釋 | |---|------|------| | 1 | in | 10 分鐘後 | | 2 | within | 上限一小時內 | | 3 | during | 電影過程中 | | 4 | for | 時間長度 | | 5 | at | 時間點 | | 6 | by（更好）/ within | 期限用 by 或 within | | 7 | in | 時段 in the evening | | 8 | During | 會議過程中 | | 9 | in | 完成花費時間 | | 10 | During | 童年過程中 |

記住這一條

In = 之後 / 花費時間、Within = 不超過、During = 過程中。考 Speaking 講計畫或回憶時，這三字用對直接升一個 band。

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