Prepositions of Time: at, in, on
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We use:
at for a PRECISE TIME
in for MONTHS, YEARS, CENTURIES and LONG PERIODS
on for DAYS and DATES
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Look at these examples:
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I have a meeting at 9am.
The shop closes at midnight.
Jane went home at lunchtime.
In England, it often snows in December.
Do you think we will go to Jupiter in the future?
There should be a lot of progress in the next century.
Do you work on Mondays?
Her birthday is on 20 November.
Where will you be on New Year's Day?
Prepositions of Place:
at, in, on
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In general, we use:
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at for a POINT
in for an ENCLOSED SPACE
on for a SURFACE
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Look at these examples:
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Jane is waiting for you at the bus stop.
The shop is at the end of the street.
My plane stopped at Dubai and Hanoi and arrived in Bangkok two hours late.
When will you arrive at the office?
Do you work in an office?
I have a meeting in New York.
Do you live in Japan?
Jupiter is in the Solar System.
The author's name is on the cover of the book.
There are no prices on this menu.
You are standing on my foot.
There was a "no smoking" sign on the wall.