A point → at
An exact time or a place treated as a point.
- at 7:30
- at the door
- at work
Free cheat sheet 04 · B1 and above
Prepositions for Time and Place
At, on or in? Picture the time or place.
These three small words often show how closely you are looking: a point, a day or surface, or a wider space or period.
What to use—and when
Make the choice by meaning.
A day, date or surface → on
A position on the calendar or on a surface.
- on Monday
- on 6 May
- on the table
A space or longer period → in
Inside an area, month, year or part of the day.
- in the room
- in September
- in 2026
- in the morning
The quick check
Keep this beside you.
- Exact time or meeting point? → at
- Day, date or surface? → on
- Inside a space or longer period? → in
Notice the difference
A small change can change the meaning.
Meeting point, day, exact time.
Workplace as a point; location inside a room.
Two common slips
A useful fix for next time.
Instead ofin Monday
Useon Monday
Named days use on.Instead ofI arrived to London.
UseI arrived in London.
Arrive in a city or country; arrive at a smaller point such as a station.