Confusing Prepositions of Place – In, On, At

In general, we use:

at for a POINT                      in for an ENCLOSED SPACE               on for a SURFACE

At	In	On
POINT	ENCLOSED SPACE	SURFACE
at the corner	in the garden	on the wall

There are some standard expressions which use at, in or on.

At	In	On
at home	in a car	on a bus
at work	in a taxi	on a train
at school	in a helicopter	on a plane
at university	in a boat	on a ship
at college	in a lift (elevator)	on a bicycle, on a motorbike
at the top	in the newspaper	on a horse, on an elephant
at the bottom	in the sky	on the radio, on television
at the side	in a row	on the left, on the right
at reception	in Oxford Street	on the way

Click on the links before to learn more about Prepositions

Introduction

Common Prepositions of Place and Direction

Confusing Prepositions of Time – In, On, At

Other Time Expressions with Prepositions and Adverbs