person / people
as for the definition, the word 'person' is often used for singular.
apparently, the word 'people' will often be used for plural.
However, I get so confused for this conversation.
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Joanne: Oh, I see. Well, look, you two, there is something i want to talk to you about.
Matt: Oh yeah? what's that, Joanne?
Joanne: well, remember the first rehearsal? just the three of us? we haven't been as good as that.
Matt: what are you trying to say, Joanne?
Joanne: well, I think perhaps after the contest, we should get our own band together, a three person band.
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So, the question is , why it is 'a three person band', not 'three people band'..