Prepositions - Time
English Usage Example
■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
since
■from a certain point of time (past till now)
□since 1980
for
■over a certain period of time (past till now)
□for 2 years
ago
■a certain time in the past
□2 years ago
before
■earlier than a certain point of time
□before 2004
to
■telling the time
□ten to six (5:50)
past
■telling the time
□ten past six (6:10)
to / till / until
■marking the beginning and end of a period of time
□from Monday to/till Friday
till / until
■in the sense of how long something is going to last
□He is on holiday until Friday.
by
■in the sense of at the latest
■up to a certain time
□I will be back by 6 o’clock.
□By 11 o'clock, I had read five pages.