Grammar Explanations, Exercises and Worksheets: How to Use In, At and On

 


Explanation (Time)

We use  

  • at  when we are talking about a precise time.
  • in  when we are talking about  months , years, centuries and long periods of  time.
  • on  when we are talking about days and exact days.

Look at these examples:

  • I have a meeting at 9am.
  • Lisa went home at lunchtime.
  • It often snows in December.
  • Do you work on Mondays?

Explanation (Place)

We use

  • At to indicate the exact position in which a noun is located
  • In to indicate that a noun is an inclosed space
  • On to indicate that the noun is on surface

Look at these examples

  • She is waiting at the door
  • She is in another country
  • The computer is on the table

Exercises

  1. In, On, At – Prepositions of Place Quiz
  2. Preposition of Place Exercises
  3. Preposition of Place Exercises PDF
  4. Preposition in Expressions of Time Exercises
  5. Preposition of Time Exercises PDF

 

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