The prepositions at, on, and in
We use at for specific times.
For example:-
I start work at 7.00 a.m.
I don't work at night.
We use on for specific days and dates .
For example:
My birthday is on Monday.
We're having a party on 7th September.
We also use on for some special days.
For example:
On Christmas day.
We use in for nonspecific times during a day, a month, a season, or a year.
For example:
In summer it's too hot to work.
I started this web site in 1999.
She woke up in the night.
More prepositions of time
| Point in Time |
|
| | on | Saturday
April 10th
Christmas Day | | by | the end of July |
| (indicates a deadline=at the latest) | | till / until / up to | March |
| (indicates an end point) | | since | April
10th March |
| (indicates a beginning point in time) | |
| Length of Time |
|
| | in | July
the autumn
the morning
the middle of ……. | | during | the meeting
the lesson | | for | two days
twelve months | | throughout | August
the project | |
