Prepositions

Prepositions are little devils because there are a lot of them and they can be confusing. Often you have to memorize them with certain words - just like you memorize new vocabulary.

Prepositions are used to show relationships to time and space. Here are some examples and explanations:

Place - in, on, at

In, on and at have similar meanings, but they are used with different kinds of places. In is usually used before large places or very small places (smaller than those used with at). On is usually used before middle-sized places. At is usually used before numbers and addresses.

In ... on ... at ... in ...
country street number a room
state coast   a corner (of a room)
province river   a park
county a ship   a boat
city a plane   a car
a building a train   a building

There are certain place phrases using these prepositions which do not follow the rules or may be confusing. Here are some of them:

in ... on ... at ...
in bed on a farm at an event (party, concert, conference, the movies, a game, etc.)
in prison   at work
in the hospital   at the airport (train station, etc.)
in college   at college
in school   at school
    at the seashore
    at sea
    at someone's house

Links: Prepositions page 1 / Prepositions page 2 / Prepositions page 3 / Prepositions page 4