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Explanation
A preposition is used to link nouns, pronouns and phrases to other words in a sentence. A preposition is used to indicate time (at 12 ), place (at hospital), direction (to the hospital), or logical relationship between the other parts of the sentence. A preposition is followed by a noun.
The table below gives information on the most frequently used prepositions:
Prepositions of  Time
preposition
usage
example
on
days of the weekon Sunday
in
months
seasons
parts of the day
years
after a certain period of time
in January
in winter
in the morning
in 2016
in an hour
at
a certain point of time
during the time when it is dark
during the weekend
at 12 (o'clock)
at night
at weekend
to
past
telling the time
10 to 12 (11:50)
10 past 12 (12:10)
till/until
before a particular time, up totill / until Friday
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Until is a preposition. Until is often shortened to till or til.
Till or til are more informal and we don’t usually use them in formal writing.
Prepositions of  Place
preposition
usage
example
on
touching a surface or an object
on the wall
on the table
on the first floor
in
inside
(room, building, street, city, country,
book, car, taxi, picture, world, etc.)
in the kitchen, in the house, in the street,
in London, in the book, in the car, in a taxi,
in the picture, in the world
at
an ​exact ​position or a ​particular ​place
 
at the door, at the station, at the table,
at a concert, at the party, at the cinema,
at school, at work
 
Other Prepositions
preposition
usage
example
about
who or what you are
discussing, describing, etc.
We were talking about you.
after
when an event or action has endedLet's go for a ​walk fter breakfast.
with
​when people or things are in a ​place
together or are doing something together
 
He ​lives with his ​grandmother.
Join the two ​pieces together with ​glue.
 
behind
at the back of someone or somethingThe teacher was standing behind me.
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on Christmas Eve
on New Year's Eve
at Easter
at Christmas