Prepositions of Time : at, on, for, since & in
We use at
to designate specific times.
The train is due at 12:15 p.m.
We use on
to designate days and dates.
My brother is coming on Monday.
We're having a party on the Fourth of July.
We use in
for nonspecific times during a day, a month, a season, or a year.
She likes to jog in the morning.
It's too cold in winter to run outside.
He started the job in 1971.
He's going to quit in August.
We use for
when we measure time (seconds, minutes, hours, days, months, years).
He held his breath for seven minutes.
She's lived there for seven years.
The British and Irish have been quarreling for seven centuries.
We use since
with a specific date or time.
He's worked here since 1970.
Related Links :
End a Sentence with a Preposition
Prepositions of Time
Prepositions of Place
Prepositions of Location
Prepositions of Movement
Prepositions with Nouns
Prepositions with Adjectives
Prepositions with Verbs
Idiomatic Expressions with Prepositions
Prepositions in Parallel Form
She's been sitting in the waiting room since two-thirty.