which到底怎麼用?6 個容易搞錯的英文 which 用法與必學句型解析 [How to Use ‘which’? 6 Common Mistakes and Essential Patterns in English]

which是英文文法中極其常見且重要的單字,卻因用法繁多、易與that混淆而讓許多學習者頭痛。本篇帶你系統化拆解which的六大用法、句型差異、必學問句和書面表達規則,同時釐清最常出現的誤用,並透過表格、例句和精闢解答,幫助你一次破解which到底怎麼用

which的多元身份揭密

which當疑問代名詞:選擇不迷惘

which在英文句子中經常擔任疑問代名詞,特別是在「有選項」時。「Which + 名詞」用法,讓聽者需要在限定範圍內做出選擇,是日常對話必備句型。

  • Which book do you want to read?(你想讀哪一本書?)
  • Which color do you prefer, blue or red?(你喜歡哪個顏色,藍色還是紅色?)

常見錯誤:
What book do you want to read?(不限定範圍,語意不同)

用法用法說明範例
What不限定範圍What food do you like?
Which已限定選項Which food do you want, pizza or pasta?

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which作關係代名詞:修飾與補充資訊

which最讓人頭痛的身份就是關係代名詞。它專門「替前面的名詞補充說明」,但中文常被誤譯為「這個是⋯」或「那個是⋯」,導致理解障礙。

1. 非限定性用法(插入補充資訊)

  • 用法說明:句中有「, which」,給先行詞補充額外細節,去掉也不影響主句意思。
  • 句型: 主句, which …
  • 例句:
    John lent me his new book, which is very interesting.
    (John借我他的新書,這本書非常有趣。)

2. 限定性用法(必要資訊)

  • 用法說明:在英式英文有時也可用於「必要資訊」,但美式英文建議用that。不過,現代語境下已可互換。
  • 句型: the + 名詞 + which …
  • 例句:
    That is the painting which won the prize.
    (那就是獲獎的畫作。)
用法類型是否可省略前方是否加逗號美式建議英式常見
非限定性×必用which必用which
限定性用thatwhich/that

which可連接前句內容做說明

在進行「解釋前一完整動作、事件」時,也能用which來引入補充敘述。

  • He missed the last train, which meant he had to stay overnight.
    (他錯過了末班車,這表示他得過夜。)
  • The company announced a pay raise, which was welcomed by employees.
    (公司宣布加薪,員工對此表示歡迎。)

重點:這種用法只能用「which」,不能用「that」,並且一定要用逗號隔開。

六大容易搞錯的which用法解析

1. which與that混用陷阱

許多學習者不清楚whichthat何時能互換。which只用於事物、動物,介紹不必要補述(非限定性),且前方需加逗號;that則用於必要資訊(限定性),且不能加逗號,且可指人、事物、動物。

  • I have a cat, which loves sleeping.(正確,補充說明)
  • I have a cat that loves sleeping.(正確,強調特質)
  • I have a cat, that loves sleeping.(錯誤,限定性不用逗號且不可加that)
用法是否加逗號可否省略可否用於人範例
which 非限定My phone, which is new, …
that 限定The girl that helped me …
which 限定The book which I read …

2. which的省略規則

which作為「受格」時可以省略,且關係子句內有「主詞」。但which若為主格或在逗號後,則不可省略。

可省略:
The book (which) you gave me is great.

不可省略:
The book, which is on the table, is new.

3. which只能代表事物、動物

which不可用來替代人,這是基礎卻易被忽略的規則。指人時必須用who/whom/that。

  • 錯誤: The man which came yesterday is my uncle.
  • 正確: The man who came yesterday is my uncle.

which更多關鍵用法和複合句解構

4. which做選擇疑問句時的固定搭配

提問有明確範圍選項時用which,若誤用what則可能導致語義不清。

  • Which shirt do you want to wear, the red one or the blue one?(正確)
  • What shirt do you want to wear?(僅用於沒限定時)

5. which搭配of + 複數名詞或代名詞

當拿來「從一群中選一個」時,可用「which of A」結構,A需為複數。

  • Which of these is yours?
  • Which of them should I choose?

6. which與複合關係代名詞(連同前面內容一起指)

which可以指前面整句或動作,用逗號與主句隔開。

  • She failed the test, which surprised everyone.
  • The party was canceled, which was disappointing.

重點:這個特性極為常見於報導、評論及正式書信。

必學which句型清單解析

以下精選英語學習者必須掌握的which句型,搭配用途詳解,讓使用更精確!

必學句型句型說明範例
Which + 名詞 + 動詞?範圍明確選擇疑問Which movie did you watch?
名詞, which + 子句補充說明(非限定用法)My car, which I bought in 2020, is new.
the N. which + 子句強調限定資訊,英式常見The house which Jack built is big.
Which of + 複數名詞 + 動詞?在多個選項中選擇Which of these pens do you prefer?
主句, which + 動詞指前句整體補述He was late, which annoyed his boss.
Which is why/how/when/where…說明原因、方式、時間、地點He lied, which is why I don’t trust him.

更多相關於英文寫作常見的詞彙與語感主題,也可參考文章 常用單詞表達,幫助你靈活應對不同主題。

which用法快速問答Q&A

which和that可以完全互通嗎?

答案:不是。在非限定用法(補充說明、加逗號)時,只能用which;限定用法在英式英語可用which或that,美式則偏好that。

which可以指人嗎?

答案:不可以。which專指事物、動物,指人要用who、whom或that。

關係代名詞which什麼時候不能省略?

答案:當其後有逗號(非限定子句)或which為主格時都不可省略;只有which做受格且無逗號時可省。

which做選擇疑問時與what的差異?

答案:which指明有選項,what多用於無具體範圍,具體詢問如下:

疑問詞範圍例句
what不限定What animal do you like?
which有明確選項Which animal do you prefer, dogs or cats?

which的使用誤區與母語者真實語感

專家指出,母語人士常以語調、逗號直覺使用which的限定/非限定功能。學習者可多看英文寫作常見誤用,訓練實戰語感與句型掌握力。

結語

which雖然看似樸素,卻蘊含豐富的語意及語法變化。經過本篇拆解後,相信你已能駕馭其作為疑問代名詞、關係代名詞和連接補充句的多重功能。建議你多反覆回顧例句、表格,並善用which於自我練習中,必能讓你的英文寫作與溝通能力提升。

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