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Beginner 📝 Grammar
Prepositions: in, on, at
In, on and at say where something is and when something happens..
1What is it?
In, on and at say where something is and when something happens.
2Why do we use it?
Wrong prepositions rarely stop people understanding you, but the right ones make you sound natural. And you use them in every sentence about time and place.
3The simple rule
Place: in = inside (in Kochi, in the room) · on = surface (on the table, on the wall) · at = a point or place (at home, at the bus stop). Time: in = months / years / parts of day · on = days and dates · at = clock times and “at night”.
4Formula
in 2026 / June / the morning · on Monday / 5 May · at 6 pm / night / the bus stop
5Easy examples
The book is on the table.
She is in the kitchen.
He is at the door.
I wake up at six.
6Everyday examples
I’ll see you on Friday.
The meeting is at 3 o’clock.
My birthday is in March.
She is at work.
7Kerala and India examples
I live in Kollam.
The temple is on MG Road.
Meet me at the railway station.
Onam is in August or September.
It rains a lot in June.
8Common mistakes
I will come in Monday.
I’ll come on Monday.
Why: Days → on.
See you on 5 o’clock.
See you at 5 o’clock.
Why: Clock times → at.
She is in home.
She is at home.
Why: Home always takes at.
In the night
At night
Why: Night is the exception → at night.
9Practice quiz
Question 1 of 4Multiple choice
The class starts ___ 9 am.
10Speaking challenge
Speaking challenge
Describe your week: On Monday I… at 9 o’clock I… in the evening I… Say 6 sentences.
0:30
Say it out loud. Nobody is listening — that’s the point. Mistakes are allowed.