prepositions in English

English Usage Example
 on  days of the week  on Monday
 in  months / seasons
 time of day
 year
 after a certain period of time (when?)  in August / in winter
 in the morning
 in 2006
 in an hour
 at  for night
 for weekend
 a certain point of time (when?)  at night
 at the weekend
 at half past nine

Place (Position and Direction)
English Usage Example
 in  room, building, street, town, country
 book, paper etc.
 car, taxi
 picture, world  in the kitchen, in London
 in the book
 in the car, in a taxi
 in the picture, in the world
 at  meaning next to, by an object
 for table
 for events
 place where you are to do something typical (watch a film, study, work)  at the door, at the station
 at the table
 at a concert, at the party
 at the cinema, at school, at work
 on  attached
 for a place with a river
 being on a surface
 for a certain side (left, right)
 for a floor in a house
 for public transport
 for television, radio  the picture on the wall
 London lies on the Thames.
 on the table
 on the left
 on the first floor
 on the bus, on a plane
 on TV, on the radio
 by, next to, beside  left or right of somebody or something  Jane is standing by / next to / beside the car.
 under  on the ground, lower than (or covered by) something else  the bag is under the table
 below  lower than something else but above ground  the fish are below the surface