English Tutorial: When to Use ON, IN, an AT

Use "on":

1. For surfaces
   Example: The book is on the table.
   Example: She sat on the floor.

2. For days and dates
   Example: I will meet you on Monday.
   Example: The party is on July 4th.

3. For means of transport (except cars)
   Example: He’s on the bus.
   Example: She’s on the train.

4. For technology or communication platforms
   Example: I saw it on TV.
   Example: We talked on the phone.

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Use "in":

1. For enclosed spaces
   Example: The keys are in the drawer.
   Example: She’s in the car.

2. For countries, cities, or larger areas
   Example: I live in France.
   Example: They are in New York.

3. For periods of time (months, years, seasons)
   Example: It happened in 1990.
   Example: I’ll see you in June.

4. For situations or conditions
   Example: He’s in trouble.
   Example: She’s in love.

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Use "at":

1. For specific locations
   Example: I’ll meet you at the restaurant.
   Example: She’s at home.

2. For specific points in time
   Example: I’ll see you at 3 PM.
   Example: The movie starts at noon.

3. For events or activities
   Example: They’re at the concert.
   Example: I’m at work.

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By following these guidelines, you can easily choose between "on," "in," and "at" based on context.