Agnė (black_paws) wrote in linguaphiles,
Agnė
black_paws
linguaphiles

  • Location:
  • Mood:
  • Music:

"a day" and "per day"

When is it correct to say "a day" and when is it correct to say "per day" (pardon my prescriptive way of asking)? How interchangeable are they?

I have a rough idea but any rules governing this would be very useful.
I've already tried googling but the first result came up as "calories per day calculator".

Very grateful, IOU, etc.
Tags: english, usage
Subscribe

Recent Posts from This Community

  • Post a new comment

    Error

    Anonymous comments are disabled in this journal

    default userpic

    Your reply will be screened

    Your IP address will be recorded 

  • 8 comments