IN - ON - AT. GRAMMAR

In general, we use:
at for a POINT - in for an ENCLOSED SPACE - on for a SURFACE

• Look at these examples:

  • Jane is waiting for you at the bus stop.
  • The shop is at the end of the street.
  • My plane stopped at Dubai and Hanoi and arrived in Bangkok two hours late.
  • When will you arrive at the office?
  • Do you work in an office?
  • I have a meeting in New York.
  • Do you live in Japan?
  • Jupiter is in the Solar System.
  • The author's name is on the cover of the book.
  • There are no prices on this menu.
  • You are standing on my foot.
  • There was a "no smoking" sign on the wall.
  • I live on the 7th floor at 21 Oxford Street in London.

  Notice the use of the prepositions of place at, in and on in these standard expressions: