I often stumble upon sentences where This is used instead of That and That instead of This. How correct is it?
- Who is this boy up there on the roof? (a woman is pointing at a boy and asking a citizen beside her)
- Do you know that man beside you? (three men are sitting at one table when one man asks another man about the third man beside the man whom the first man is asking)
- I've heard that song in the morning. (a man is addressing another man, speaking of a song they are currently listening to)
I might be wrong but in the first sentence it should be "that" and in the other two sentences it should be "this".