Prepositions play a great role in speaking and writing. Despite the fact that they are widely used in both sections, a few people know their proper usage. For this reason, we are going to see some specific uses of the prepositions ‘At’, ‘In’, and ‘On’ in this lesson. Students must learn them by heart and include them in their frequently used VOCABULARY list.

At/In/On in Reference to ‘Time’

When it comes to the uses of at/in/on in reference to ‘time,’

  • ‘At’ is used for a precise time.
  • ‘In’ is used for months, years, centuries, and long periods.
  • ‘On’ is used for days and dates.

AT Precise Time
at 4 O’clock
at 11:40 am
at noon
at lunchtime
at bedtime
at sunrise
at sunset
at the moment

IN Months, Years, Centuries, And Long Periods
in September
In summer
In the summer
in 1820
in the 1820s
in the next century
in the Ice Age
in the past/future

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ON Days and Dates
on Friday
on Monday
on 7th August
on 23rd January 2005
on Christmas Day
on Independence Day
on his birthday
on New Year’s Eve

Look at the following examples:

  • They went home at dinnertime.
  • I never work on Fridays.
  • That supermarket closes at midnight.
  • There should be a lot of projects in the next decade.
  • I will deliver a speech on the eve of Independence Day.

Note the use of the preposition of time ‘at’ in the following expressions:

Expressions Example
at night The moon shines at night.
at the weekend She doesn’t usually work at the weekend.
at Christms/Easter He loves to stay with his family at Christmas.
at the same time We got on the train at the same time.
at present She is not home at present.

Note the use of the preposition of time ‘in’ and ‘on’ in these common expressions:

In On
in the morning on Tuesday morning
in the mornings on Sunday mornings
in the afternoon(s) on Tuesdays afternoons
in the evening(s) on Monday evening

Important Note:

At/In/On cannot be used with last/next/every.


  • I went to Saudi Arabia last May. (not in last May)
  • He is coming back next Friday. (not on next Friday)
  • He goes home every Easter. ( not on every Easter)
  • I will call you this evening. (not in this evening)

At/In/On in Reference of ‘Place’

Where to use them?

You can use at/in/on in reference of ‘place’ for the following:

  • ‘At’ is used for a POINT.
  • ‘In’ is used for an enclosed SPACE.
  • ‘On’ is used for a SURFACE.

AT Point In Enclosed Space On Surface
at the corner in the garden on the wall
at the bus stop in Delhi on the ceiling
at the door in India on the door
at the top of the page in a box on the cover
at the end of the road in my pocket on the floor
at the entrance in a building on the menu
at the crossroads in my wallet on page

Look at the following examples:

  • Please wait for me at the bus stop.
  • I will meet you in Delhi.
  • That bookstore is at the end of the lane.
  • Mars is in the solar system.
  • There was a no-smoking sign on the wall.
  • Can you see me at the hospital?
  • I live on the second floor at Om Vihar Phase 1 in Uttam Nagar.

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