Prepositions of time are prepositions that allow you to discuss a specific period such as a date, a day of the week. or the actual time something is going to happen.
Prepositions of time are the same words as prepositions of place, however, they are used in a different way.
On Friday night we are invited to a party.
I graduated from University 2 years ago.
I will be back at work by 10 am
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Prepositions of Time |
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English |
Usage |
Example |
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On |
Days of the week |
On Friday |
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In |
Time of day |
In the Evening |
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Year |
In 2016 |
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After a certain period of time (when?) |
In an hour |
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At |
For night At a certain point in time (when?) |
At night At half past nine |
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Since |
From a certain point in time (past till now) |
Since 2001 |
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For |
Over a certain period of time (past till now) |
For 2 years |
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Ago |
At a certain time in the past |
5 years ago |
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Before |
Earlier than a certain point in time |
Before 2018 |
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To |
Telling the time |
Twenty-to-seven (6:40) |
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Past |
Telling the time |
Ten past two (2:10) |
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To/till/until |
Marking the beginning and end of a period of time |
From Monday to /till Friday |
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Till/Until |
In the sense of how long something is going to last |
He is on holiday until January 2nd |
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By |
In a sense at the latest |
I will be back by 10 o’clock |
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Up to a certain time. |
By 5 pm I had read five pages |
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