1. Here are the designs. Which one(s) do you prefer?
   這就是那些圖樣. 你喜歡哪一個(gè)[些]?
2. Here are the chairs. Tell me which are worth buying.
   就是這些椅子。告訴我買哪幾把好。
3. Which book have you read?
   哪一本書你讀過(guò)了？
4. I want to take away the book which you showed me yesterday.
   我想帶走你昨天給我看的那本書。
5. He lost his way, which delayed him considerably.
   他迷了路，這使他耽擱了很久。

which

pron.（代詞）
What particular one or ones:
哪一個(gè)，哪一些：特定的一個(gè)或那些：
例句：
Which of these is yoursô
這些里面哪個(gè)是你的ô

The one or ones previously mentioned or implied, specifically:
那一個(gè)，那一些：先前提到的或暗指的那個(gè)或那些，尤其是：
Used as a relative pronoun in a clause that provides additional information about the antecedent:
在從句中用作關(guān)系代詞為其先行詞提供額外附加信息：
例句：
my house, which is small and old.
我的房子，又小又舊

Used as a relative pronoun preceded bythat or a preposition in a clause that defines or restricts the antecedent:
用在前面帶有that 或一介詞的從句中作關(guān)系代詞，定語(yǔ)從句用以給先行詞下定義或做限制：
例句：
that which he needed; the subject on which she spoke.
那他所需要的；她談到的話題

Used instead ofthat as a relative pronoun in a clause that defines or restricts the antecedent:
用以取代that 在從句中作關(guān)系代詞，該從句限制或給其先行詞下定義：
例句：
The movie which was shown later was better.
后來(lái)上映的電影較好看

Any of the things, events, or people designated or implied; whichever:
任一：任一個(gè)規(guī)定或暗示的事、事情、人；任一：
例句：
Choose which you like best.
選你最喜歡的

A thing or circumstance that:
那事情，那情況：
例句：
He left early, which was wise.
他早早地離開，那是很明智的

adj.（形容詞）
What particular one or ones of a number of things or people:
…那個(gè)：一定數(shù)目的人或物中特定的一個(gè)或一些：
例句：
Which part of town do you meanô
你是說(shuō)城鎮(zhèn)的哪個(gè)地區(qū)ô

Any one or any number of; whichever:
任一個(gè)，任一些；無(wú)論哪個(gè)：
例句：
Use which door you please.
隨便你用哪個(gè)門

Being the one or ones previously mentioned or implied:
…的那個(gè)：先前提及或暗指的那個(gè)：
例句：
It started to rain, at which point we ran.
天開始下雨時(shí)，我們跑了起來(lái)

來(lái)源：
Middle English
中古英語(yǔ)
from Old English hwilc * see k wo-
源自 古英語(yǔ) hwilc *參見 k wo-

The antecedent ofwhich can sometimes be a sentence or clause, as opposed to a noun phrase,as inShe ignored him, which proved to be unwise. They swept the council elections,which could never have happened under the old rules. Such examples are unexceptionable,but care should be taken that this usage does not cause ambiguities.The sentenceIt emerged that Edna made the complaint, which surprised everybody may mean either that the complaint was surprising or that it was surprising that Edna made it. The ambiguity can be avoided with paraphrases such asIt emerged that Edna made the complaint, a revelation that surprised everybody. ô In its use to refer to the contents of sentences and clauses,which should be used only when it is preceded by its antecedent. When the antecedent follows,what should be used, particularly in formal style: Still, he has not said he will withdraw, which is more surprising but Still, what (not which ) is more surprising, he has not said he will withdraw. See Usage Note at that ,what ,whose
which 的先行詞有時(shí)可為一個(gè)句子或一個(gè)從句， 與名詞短語(yǔ)相對(duì)立，如在句子她忽視了他，結(jié)果證明這是不明智的。 他們?cè)谖瘑T會(huì)選舉中一舉獲勝，這在舊體制下是永遠(yuǎn)不會(huì)發(fā)生的。 這樣的例子是無(wú)懈可擊的，但應(yīng)該小心謹(jǐn)慎以使這種用法不致于引起模棱兩可。句子It emerged that Edna made the complaint, which surprised everybody（埃德娜發(fā)出了使每個(gè)人都很吃驚的怨言） 既可以指怨氣讓人吃驚也可以指抱怨的是埃德娜而讓人吃驚。 用例如It emerged that Edna made the complaint, a revelation that surprised everybody.（埃德娜大加抱怨，這發(fā)現(xiàn)讓大家都很吃驚） 這樣的句子就可以避免模棱兩可。 在它被用來(lái)指句子或從句內(nèi)容時(shí)，which 只用在先行詞在其前面時(shí)。 當(dāng)先行詞跟在后面時(shí)，就應(yīng)該用what ，特別是在正式文體中： Still, he has not said he will withdraw, which is more surprising（他依然還是沒(méi)說(shuō)他將退出，這更讓人吃驚） 但另外一種形式 Still, what （不用 which ) is more surprising, he has not said he will withdraw.（然而，更讓人吃驚的是他還是沒(méi)說(shuō)他將退出） 參見 that,what,whose