USOS MÁS COMUNES
| AT | IN | ON |
| PRECISE TIME | MONTHS, YEARS, CENTURIES and LONG PERIODS | DAYS and DATES |
| at 3 o’clock | inMay | onSunday |
| at 10.30am | insummer | onTuesdays |
| atnoon | inthesummer | on 6 March |
| atdinnertime | in 1990 | on 25 Dec. 2010 |
| atbedtime | inthe 1990s | on Christmas Day |
| atsunrise | inthenextcentury | on Independence Day |
| atsunset | inthe Ice Age | onmybirthday |
| atthemoment | inthepast/future | on New Year’sEve |
|
Expression |
Example |
|
at night |
The stars shine at night. |
|
at theweekend |
I don’t usually work at the weekend. |
|
at Christmas/Easter |
I stay with my family at Christmas. |
|
at thesame time |
We finished the test at the same time. |
|
at present |
He’s not home at present. Try later. |
|
in |
on |
|
inthemorning |
onTuesdaymorning |
|
inthemornings |
onSaturdaymornings |
|
intheafternoon(s) |
onSundayafternoons |
|
intheevening(s) |
onMondayevening |
| Preposition | Use |
| after | laterthan |
| ago | how far something happened (in the past) |
| before | earlierthan |
| between | time that separates two points |
| by | not later than a special time |
| during | through the whole of a period of time |
| for | period of time |
| from … to from… till/until |
two points form a period |
| since | point of time |
| till/until | no later than a special time |
| within | during a period of time |