Among these boys, I know ____ is your brother.

Which relative pronoun, 'who' or 'which' will be appropriate here. In my opinion, ' who' sounds good here, but if we selecting something or someone from a group we must use 'which'. Would you please explain it, I will be thankful!

  • 2
    Both "who" and "which one" are acceptable but "who" is more common. And I would definitely place the preposition at the end and I would consider using "Of" instead of "Among". "Of these boys, I know who (which one) your brother is" May 22, 2017 at 12:45
  • 1
    As sovereignsun pointed out, subject-auxiliary inversion doesn't occur in an embedded clause. So it should be, "who your brother is". But there is no preposition moved here. May 22, 2017 at 13:10
  • 1
    Among is wrong here. A grammar mistake. Of the three boys, I know who your brother is. Boys are people so who.
    – Lambie
    May 22, 2017 at 15:28
  • 2
    @Lambie I don't understand you objection to "among". It is perfectly normal to use it with people. Who do you know among the people coming for lunch?, is quite alright.
    – WS2
    May 22, 2017 at 16:21
  • I, too, want to ask the same thing.Is using 'among' here grammatically incorrect? @Lambie, would you please explain this. May 22, 2017 at 18:24

1 Answer 1


I would say that which one is actually more common than who in that particular construction, which begins "Among these boys..." When referring to one of several, we tend to use which, even when people are involved.

I know who your brother is, since I've met him on a number of occasions, and so, of the people shown in this photo, I can easily identify which one he is.

"I can easily identify which one is him" would also be heard quite often.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .