Prepositions problemáticas (at/in/on – tiempo y lugar) – Gramática inglesa B1

1) Mapa rápido

Tiempo: at 7 o’clock on Monday in July / 2024 in the morning at night on the weekend Lugar: at the station in London on the bus on the wall in the room

Truco visual (tiempo):
• at → punto exacto ⏱
• on → día / superficie 📅
• in → contenedor grande (mes/año/periodo) 📦

Piensa que in es “dentro de algo grande”, on es “sobre una línea o superficie” y at es “punto concreto”.

2) Tiempo: at / in / on

Usos más frecuentes en expresiones de tiempo:

Preposición	Uso típico	Ejemplos
at	Puntos concretos del reloj / fiestas	at 7 o’clock at noon / at midnight at Christmas (en Navidad, periodo festivo) at the weekend* (BrE)
on	Días y fechas	on Monday on Friday night on 25th December on my birthday on the weekend* (AmE)
in	Meses, años, estaciones, partes del día	in July, in 2024 in winter, in the summer in the morning, in the afternoon, in the evening

• The meeting is at 3 p.m. on Monday in July.
• I usually study in the evening, but tonight I’m going out.

night es especial: normalmente at night (no: ❌ *in the night*), excepto en usos literarios.

3) Lugar: at / in / on

Usos más comunes cuando hablamos de lugar o posición.

Preposición	Idea principal	Ejemplos
at	Punto (ubicación general) / eventos	at home at work at school / at university at the bus stop at the station / at the airport at a party / at a concert
in	Dentro de un espacio 3D (ciudad, habitación, país…)	in London, in Mexico in a room, in the kitchen in a car, in a taxi in a building
on	Sobre una superficie / transporte público	on the table, on the wall on the floor, on the ceiling on a bus, on a train, on a plane on a bike, on a motorbike

• She’s at the station, waiting for a train.
• He lives in a small town.
• There’s a picture on the wall.

in a car pero on a bus / on a train / on a plane. El coche es más “privado y cerrado”; el bus/tren/avión son transporte público.

4) Contrastes útiles (tiempo y lugar)

A) Tiempo

Incorrecto	Correcto	Comentario
in Monday	on Monday	Días → on.
at July	in July	Meses → in.
in night	at night	Expresión fija → at night.
on 7 o’clock	at 7 o’clock	Horas → at.
in the weekend	at the weekend (BrE) / on the weekend (AmE)	Ambas son correctas según variedad de inglés.

B) Lugar

Incorrecto	Correcto	Comentario
in the wall	on the wall	Superficie → on.
on the room	in the room	Espacio interior → in.
on the car	in the car	Dentro del coche → in.
in the bus	on the bus	Transporte público → on.
in the station (esperando fuera)	at the station	Ubicación general (sin importar dentro/fuera) → at.

5) Mini resumen visual

TIEMPO
• at = puntos: at 3 o’clock, at night, at Christmas
• on = días: on Monday, on 5th June, on my birthday
• in = periodos grandes: in June, in 2025, in the morning

LUGAR
• at = punto: at home, at work, at the station
• in = dentro: in London, in the room, in a car
• on = sobre: on the table, on the wall, on the bus

Si puedes imaginar un punto en el mapa → at. Si es un espacio cerrado → in. Si es una superficie → on.

6) Mini-práctica

Completa con at / in / on (tiempo):
a) The party is ______ Saturday ______ 8 p.m.
b) I usually get up early ______ the morning.
c) We don’t have classes ______ August.
d) I was born ______ 1995.
e) They often go skiing ______ winter.
Completa con at / in / on (lugar):
a) She is waiting ______ the bus stop.
b) There’s a spider ______ the wall.
c) He lives ______ a small village ______ the mountains.
d) We’re ______ the airport, our flight is delayed.
e) I left my keys ______ the car.
Elige la opción correcta:
a) I’ll see you (at / in / on) Monday.
b) The picture is (at / in / on) the wall.
c) They’re (at / in / on) the bus to London.
d) We arrived (at / in / on) the station late.
e) I usually study (at / in / on) night.
Corrige si es necesario:
a) The meeting is in 3 o’clock on Tuesday.
b) She works in a bank at the city centre.
c) I like staying at home in the weekend.
d) He lives at London, in a flat.
e) There are some books in the table.
Traduce al inglés usando at / in / on:
a) Nos vemos el lunes a las 7 en punto.
b) Vivo en México, en una ciudad pequeña.
c) Hay una foto en la pared de mi habitación.
d) Ella está en la estación, en el andén 3.
e) Normalmente estudio por la noche.

Respuestas ejemplo:
1) a) on Saturday at 8 p.m. b) in the morning c) in August d) in 1995 e) in winter
2) a) at the bus stop b) on the wall c) in a small village in the mountains d) at the airport e) in the car
3) a) on Monday b) on the wall c) on the bus d) at the station e) at night
4) a) The meeting is at 3 o’clock on Tuesday.
b) She works in a bank in the city centre. / She works at a bank in the city centre.
c) I like staying at home at the weekend (BrE) / on the weekend (AmE).
d) He lives in London, in a flat.
e) There are some books on the table.
5) a) We’ll meet on Monday at 7 o’clock.
b) I live in Mexico, in a small town.
c) There is a photo on the wall in my bedroom.
d) She is at the station, on platform 3.
e) I usually study at night.

7) Próximo paso

Continúa con Adverbs & word order (posición de adverbios) para aprender dónde colocar always, usually, sometimes y otros adverbios dentro de la oración sin sonar “raro”.