How do you punctuate "Are you Mr. Jones?" Is that correct or should it be "Are you, Mr. Jones?"
closed as not a real question by FumbleFingers, Matt Эллен, kiamlaluno, Mitch, waiwai933♦ Aug 18 '12 at 5:40
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It depends on the intended meaning. "Are you Mr Jones?" means you are asking whether he is named Mr. Jones. "Are you, Mr. Jones?" requires context to make sense, e.g.:
In this example, you already understand that the man is Mr. Jones, and you are asking him whether he is a member of the committee. In essence, the latter sentence is merely short for:
Naturally, if the context is different, the meaning of Are you, Mr. Jones? also changes.