PREPOSITIONS OF PLACEAT - IN - ON
We use at for a point:
at the window - at the entrance - at the door
at the end of the street - at the station - at the top
- Bill is waiting for you at the bus stop.
We use on for a surface:
on the wall - on the ceiling - on the floor - on a page
on a cover
- Have you seen the notice on the notice board?
We use in for an enclosed space:
in the garden - in the house - in London - in the water
in her bag - in a row - in a town
- There is nobody in the room. She lives in a small village.
1. We say that someone is at an event:
at a party - at a pop concert - at a conference - at a meeting
- Tom is at a party.
2. We say at with buildings when we say where the event (film, concert,...) takes place:
- Where were you yesterday? At the cinema.
- The meeting took place at the headquarters.
3. We say at someone's house:
- We were at Bill's house last Thursday.
4. We say at for a place which is a part of our journey:
- We stopped at a very nice village. Does the train stop at Nashville?
1. We use on with small islands:
- She spent her holiday on a small island.
- London is on the river Thames.
- Portsmouth is on the south coast of England.
1. We say in when we talk about a building itself.
- The rooms of Tom's house are small.
- His parents live in York.
Note these expressions:
at home - at work - at school - at university - at college - at the station - at an airport - at the seaside - at sea (on a voyage) - at reception - at the corner of a street - at the back / front of a building / cinema / group of people, etc. - arrive at with other places or events
in the newspaper - in bed - in hospital - in prison - in the street - in the sky - in an armchair (sit) - in a photograph - in a picture - in a mirror - in the corner of a room - in the back / front of a car - arrive in a country or town
on a farm - on the left - on the right - on the ground floor - on the first, second,... floor - on the way - on the chair (sit) - on the radio - on television - on a horse - on the corner of a street - on the back / front of a letter / piece of paper etc.
See the exercise: Exercise 1