Do you know how and when to use at, in and on to talk about time? Test what you know with interactive exercises and read the explanation to help you
Read the explanation to learn more
Grammar explanation
We use the prepositions in, on or at to say when something happens.
At
We usually use at with times of day, including mealtimes, bedtime, etc
at 3 o’clock, at 10.30 am, at noon, at dinnertime, at bedtime, at sunrise, at sunset, at the moment
Use at in the following common expressions
at the weekend: I don’t usually work at the weekend.
at Christmas/Easter: I stay with my family at Christmas.
at the same time: We finished the test at the same time.
at present/at the moment: He’s not home at present. Try later.
In
Use in with months, seasons, years, decades, centuries and long periods of time in general
in May, in the summer, in 1990, in the 1990s, in the 20th century, in the Ice Age, in the past/future
On
Use on followed by days and dates
on Sunday, on Tuesday mornings, on 6 March, on 25 December 2010, on Christmas Day, on Independence Day, on my birthday, on New Year’s
Look at these examples to see how we use at, in and on to talk about time.
In the afternoon, I do activities.
On weekdays, I work until 12.
At weekends, I love to go skiing.
In spring, the weather is warmer.
On Mondays, I work from home.
At 5 o'clock, I do two or three more hours of work.
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Try this exercise to test your grammar
Grammar test 1
