Prepositions of time (In, on, at) – Rules and Exercise

When talking about time, how do you know which preposition to use?

We use:

AT for an EXACT TIME

ON for DAYS & DATES

IN for MONTHS & LONGER (YEARS, CENTURIES, etc.)

Notice: The main exception to this rule is that we use the phrase “at night” but we say “in the morning”, “in the afternoon”, and “in the evening”.

TIP: Use this sentence to help you remember!

“I study English on Mondays in Winter at that time.”

PRACTICE