I have been watching a video here: https://www.youtube.com/watch?v=FVmVP9CCRcU

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Why we use a comma rather than a period after Yes / No?

1 Answer 1


The word "Yes" on its own isn't a full sentence. I suppose you could make some claim that it was short for something that is a full sentence. But why bother to jump through those logical loops.

English has a form of punctuation that is for separating phrases that are not sentences, the comma.

  • 2
    Yes. You're right.
    – gotube
    Commented Oct 16, 2022 at 5:28
  • It might be written with a full stop if the speaker said "Yes" abruptly and then paused before saying something more. Normally, it would be considered impolite to answer a question with just "Yes" or "No", so we say "Yes, I have", "No, it isn't" etc. Commented Oct 16, 2022 at 8:23
  • @KateBunting so adding the formal “it isn't” automatically makes it more polite? Not sure about that... Commented Oct 16, 2022 at 12:30
  • Don't mix formality with politeness. Often "polite" is the same as friendly, tactful and and less formal. Just replying "Yes", or "Yes, I have" might be impolite, if the other person was trying to start a conversation. Instead you might say "Yes, I've been trying to get in shape for ... how about you?" Less formal, more polite.
    – James K
    Commented Oct 16, 2022 at 12:39

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