Who is used as the subject or object of a verb. See entries at whom and whose.
who用作动词的主语或宾语。见词条whom, whose。
Usually pronounced /huː/ for meanings 2 and 3. 义项2和3在句中通常不作重读。
1
[QUEST 疑问词](用于疑问句，询问人的姓名或身份)谁 You use
who in questions when you ask about the name or identity of a person or group of people.
Who's there?...
谁在哪儿？
Who is the least popular man around here?...
这里谁最不受欢迎？
Who do you work for?...
你为谁工作？
Who do you suppose will replace her on the show?...
你觉得谁会代替她参加这场演出？
'You reminded me of somebody.' — 'Who?'
“你让我想起了一个人。”——“谁？”
2
[CONJ-SUBORD 连词](尤用在动词和形容词后引导从句，说明人的身份)谁 You use
who after certain words, especially verbs and adjectives, to introduce a clause where you talk about the identity of a person or a group of people.
Police have not been able to find out who was responsible for the forgeries...
警方还未能查明谁是这些造假案的元凶。
I went over to start up a conversation, asking her who she knew at the party...
我凑过去搭讪，问她这个聚会上都认识谁。
You know who these people are.
你知道这都是些什么人。
3
[PRON-REL 关系代词](用于进行限定说明或提供更多信息的关系从句的句首) You use
who at the beginning of a relative clause when specifying the person or group of people you are talking about or when giving more information about them.
There are those who eat out for a special occasion, or treat themselves...
有些人会在特殊的日子或犒劳自己时出去吃饭。
The woman, who needs constant attention, is cared for by relatives...
那个需要长期照料的女人由亲戚们照看着。
The hijacker gave himself up to police, who are now questioning him.
劫持者向警方自首了，目前警方正在审讯他。
Usage Note :
Who is now commonly used where previously it was only to be considered to be correct to use whom. Who, however, cannot be used directly after a preposition, for example, you cannot say '...the woman to who I spoke'. Instead you can say '...the woman to whom I spoke' or '...the woman I spoke to'. There are some types of sentence in which who cannot be used, for example when you are talking about quantities. ...twenty masked prisoners, many of whom are armed with makeshift weapons.
许多先前只能使用 whom 的地方现在也经常使用 who，但作为介词的宾语只能用 whom。比如不可以说the woman to who I spoke，而说 the woman to whom I spoke 或 the woman I spoke to 。此外还有些情形下不能使用 who，比如在指数量时：twenty masked prisoners, many of whom are armed with makeshift weapons (20个蒙面犯人，其中许多用的是临时凑合的武器)。