Us de la preposicio IN

A) Lloc

· Per indicar espais oberts i tancats.
·Per indicar que una cosa està dins altra.
·Per indicar un desplaçament dins un lloc geogràfic.
Exemples:

I live in Brighton.
The cat is in the box.
I found your address in the phone book.
My parents arrive in France on Monday.

B) Temps
Mesos
Anys
Èpoques
Parts del dia
Períodes de temps
Exemples:
We went to Mexico in May.
I always run in the mornings.
I will see him in a week.
She was born in 1976.




Ús de la preposició AT

A) Lloc
S'utilitza davant d'edificis com cases, universitats, aeroports.
Per a indicar aconteciments com reunions, festes, concerts, deports
Quan ens referim a llocs que no siguin ciutats no països.
Exemples:
He is at home.
I always visit my sister at work.
We eat at the table.
She will see him at the theatre.
Her name is at the bottom of the page.
When did you arrive at the airport?
B) Temps
L'utilitzam davant de l'hora i de festes.
Exemples:
The pen is on the table.
They have a photograph of Paris on the wall.
I am on the bus.
Her apartment is on the second floor.


Ús de la preposició On

A) Lloc
Es col·loca davant de noms de llocs con base com meses, sols, etc..
Quan ens referim a llocs d'una habitació com techo o pared.
Per a indicar que algu esta dins de un transport public o en una planta d'un edifici
Exemples:
The pen is on the table.
They have a photograph of Paris on the wall.
I am on the bus.
Her apartment is on the second floor.


B) Temps:
L'utilitzam con dies de la setmana i festes.
Exemples:
They went to Mexico on the first of May.
He runs on Mondays and Fridays.
I will see Luis on his birthday.