How do you use "which" in a sentence?

Which train are you taking? The house, which was built in 1920, needs repair. I do not know which one to choose.

which

Vocabulary Word BritishAmerican ★★★★★ Very Common Neutral

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Meaning: Asking for information specifying one from a set; introducing additional information

哪一个，哪些，...的那个

cuál, que, el cual

どちらの、どの、〜するところの

어느, 어떤, ~하는 바의

'Which' is used in questions to ask about a choice from a limited set ('which colour do you prefer?') and as a relative pronoun introducing non-defining clauses that add extra information ('the book, which I bought yesterday, is excellent'). In British English, 'which' is not used for defining clauses about people.

「which」用于问句中询问有限选项中的选择（「which colour do you prefer?」），也作为关系代词引导添加额外信息的非限定性从句（「the book, which I bought yesterday, is excellent」）。在英式英语中，「which」不用于关于人的限定性从句。

«Which» se usa en preguntas para preguntar sobre una opción de un conjunto limitado («which colour do you prefer?») y como pronombre relativo introduciendo cláusulas no definitorias que añaden información extra («the book, which I bought yesterday, is excellent»). En inglés británico, «which» no se usa para cláusulas definitorias sobre personas.

「which」は限られた選択肢からの選択を尋ねる疑問文（「which colour do you prefer?」）で使われ、また追加情報を加える非制限関係節を導入する関係代名詞としても使われます（「the book, which I bought yesterday, is excellent」）。イギリス英語では、「which」は人に関する制限節には使われません。

'which'는 제한된 범위에서 선택을 묻는 의문사('어떤 색을 선호하세요?')와, 부가 정보를 추가하는 비제한적 관계절을 이끄는 관계대명사('어제 산 그 책은 훌륭합니다')로 사용됩니다. 영국 영어에서 'which'는 사람에 대한 한정적 관계절에는 사용되지 않습니다.

Examples

Which train are you taking?
你坐哪趟火车？
¿Qué tren vas a tomar?
どの電車に乗りますか？
어느 기차를 타실 건가요?
The house, which was built in 1920, needs repair.
这栋房子建于1920年，需要修缮。
La casa, que fue construida en 1920, necesita reparaciones.
1920年に建てられたその家は修理が必要です。
1920년에 지어진 그 집은 수리가 필요합니다.
I do not know which one to choose.
我不知道该选哪一个。
No sé cuál elegir.
どれを選べばいいかわかりません。
어느 것을 선택해야 할지 모르겠습니다.

Pronunciation

Usage Guide

Context: general

Tone: neutral

Origin & History

From Old English 'hwilc', a compound of 'hwā' (who) + 'līc' (like, body), literally 'of what form'. From Proto-Germanic *hwalīkaz. Cognate with German 'welch'.

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal