英文 which 用法全解析:7大常見錯誤一次搞定,避免混淆讓表達更精準!

在英文學習路上,「which」絕對是出現頻率高、卻超容易用錯的關鍵字!無論是作為疑問詞還是關係代名詞,很多學習者都會在 what vs which、限定與非限定子句、逗點位置等地方踩雷。本文整理出7大最常見錯誤,搭配清晰表格、正確句型與官方語法說明,幫助你徹底搞懂 which 的用法,讓英文說得更道地、寫得更專業。

which 的三大核心用法快速掌握
- 疑問詞:詢問「哪一個/哪些」,用在有明確選項或範圍時
→ Which book do you want to read? - 限定關係代名詞(Restrictive):必要資訊,不加逗點,常可用 that 取代
→ The movie which we watched yesterday was great. - 非限定關係代名詞(Non-restrictive):補充說明,前後一定要加逗點
→ Taiwan, which is an island, has beautiful mountains.
疑問詞 which:什麼時候用?跟 what 差在哪?
鐵律:有「有限選項或明確範圍」時用 which,沒有就用 what。
| 情境 | 錯誤範例 | 正確範例 | 說明 |
|---|---|---|---|
| 有限本書可選 | What of these books is yours? | Which of these books is yours? | of + 複數名詞時一定要用 which |
| 已提供顏色選項 | What color do you prefer? | Which color do you prefer? | 前文有範圍,用 which 更精準 |
小提醒:口語中很多人混用,但正式寫作與多益、托福、IELTS 都建議遵守這條規則。

關係代名詞 which:限定 vs 非限定一次看懂
| 類型 | 例句 | 中文說明 | 逗點規則 |
|---|---|---|---|
| 限定 | The car which is red belongs to me. | 我有多台車,限定是那台紅色的 | 不加逗點 |
| 非限定 | My car, which is red, is very fast. | 我只有一台車,紅色只是補充說明 | 前後加逗點 |
經典錯誤示範與改正
- ❌ My sister which lives in Taipei is a doctor.
✅ My sister, who lives in Taipei, is a doctor.(指人用 who) - ❌ This is the park which I told you about it yesterday.
✅ This is the park which I told you about yesterday.(刪掉多餘的 it) - ❌ The phone which I use it every day is new.
✅ The phone which I use every day is new.

7大 which 常見錯誤總整理(附正確用法)
| 編號 | 常見錯誤類型 | 錯誤例句 | 正確例句 | 關鍵提醒 |
|---|---|---|---|---|
| 1 | which 與 what 混用 | What of the apples do you want? | Which of the apples do you want? | 有範圍就用 which |
| 2 | 逗點放錯位置 | My dog which is brown is cute. | My dog, which is brown, is cute.(或用 that 不加逗點) | 非限定一定要逗點 |
| 3 | 誤用來指人 | The man which helped me is kind. | The man who helped me is kind. | 指人用 who |
| 4 | 介系詞 + which 位置錯誤 | The box which I put the gift in it is here. | The box which I put the gift in is here. | 不能加 it;或用 in which |
| 5 | 關係詞重複 | The book which that I read is interesting. | The book that/which I read is interesting. | 只能選一個 |
| 6 | 單複數動詞判斷錯誤 | Which of the students are the tallest? | Which of the students is the tallest?(問「哪一位」) | 看你要選「一個」還是「多個」 |
| 7 | 沒有範圍卻硬用 which | Which country do you want to visit? | What country do you want to visit? | 無限選項用 what |

進階句型:介系詞 + which 正式寫作必備
- The company in which I work is growing fast.
(口語:The company that I work for is growing fast.) - This is the reason for which she cried.
(口語:This is the reason why she cried.)
延伸閱讀 – 六月英文怎麼說?5個常見錯誤用法你一定要避免!
結語:學會 which,英文立刻進階!
掌握以上規則,你的英文聽說讀寫都能更精準、地道。想用系統化方式一次鞏固所有重要文法點,並得到個人化診斷與練習嗎?歡迎體驗 英商劍橋和享受英文 的進階語法課程與智能診斷工具,讓你的英文實力再升級!

![學習落差怎麼解決?10個有效縮小英文學習落差的方法 [How To Bridge The Learning Gap? 10 Effective Ways To Narrow The English Learning Gap]](https://littlenewton.efroip.tw/wp-content/uploads/2026/03/my_prefix_1773265825-768x1152.jpg)
![英語寫作常見錯誤大解析|5個你絕對要避免的致命陷阱 [5 Fatal English Writing Mistakes You Must Avoid]](https://littlenewton.efroip.tw/wp-content/uploads/2026/03/my_prefix_1773258624-768x512.jpg)
