at, on, and in for place

Learning outcome

You can choose at, on, or in from the kind of place: a point, a surface, or an enclosed area.

Concepts and reasons

at is a point. at the door. at the bus stop. at the station. You name the spot, not the inside. on is a surface. on the table. on the wall. on the floor. on the page. in is an enclosed space or a larger area. in the room. in the box. in Mumbai. in India. A street address is a point, so at. She lives at 21 Park Street. The city around that address is an area, so in. She lives in Delhi. arrive at a point: at the station, at the airport. arrive in a city or a country: in Delhi, in India. Inside the building is in, even when the building is also a point. at the station means you have reached that place. in the station means you are inside it.

Worked examples

1. The keys are on the table. A table is a surface, so on.
2. She lives in Mumbai. A city is an area, so in.
3. We arrived at the station. A station, as the place you reach, is a point, so at.

Common traps

in the table is wrong for an object resting on top. Use on the table. at India treats a country as a point. A country takes in. arrive in the station mixes the two rules. Reach the place: arrive at the station. Be inside it: be in the station.

Practice questions

1. The letter is ___ the envelope.
2. He is waiting ___ the door.
3. They arrived ___ Delhi in the evening.

Answers and explanations

1. in. An envelope encloses the letter.
2. at. A door, as the spot where he waits, is a point.
3. in. Delhi is a city, so arrive in Delhi.

Analogy

at is a pin on the map. on is the paper the pin sits on. in is the whole district drawn around the pin.

Quick reference

• at: a point, a door, a stop, a station you arrive at, a street address.
• on: a surface, a table, a wall, a floor.
• in: a room, a box, a city, a country.
• arrive at a point. arrive in a city or a country.