PREPOSITION IN, ON, AT

Prepositions of Time: in, on, at
We use:

• at for a PRECISE TIME
• in for MONTHS, YEARS, CENTURIES and LONG PERIODS
• on for DAYS and DATES

At	In	On
PRECISE TIME	MONTHS, YEARS, CENTURIES and LONG PERIODS	DAYS and DATES
at 3 o’clock	in May	on Sunday
at 10.30am	in summer	on Tuesdays
at noon	in the summer	on 6 March
at dinnertime	in 1990	on 25 Dec. 2010
at bedtime	in the 1990s	on Christmas Day
at sunrise	in the next century	on Independence Day
at sunset	in the Ice Age	on my birthday
at the moment	in the past/future	on New Year’s Eve

Look at these examples :

·         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?

Notice the use of the preposition of time at in the following standard expressions:

Expression	Example
at night	The stars shine at night.
at the weekend	I don’t usually work at the weekend.
at Christmas/Easter	I stay with my family at Christmas.
at the same time	We finished the test at the same time.
at present	He’s not home at present. Try later.

Notice the use of the prepositions of time in and on in these common expressions:

in	On
in the morning	on Tuesday morning
in the mornings	on Saturday mornings
in the afternoon(s)	on Sunday afternoons
in the evening(s)	on Monday evening

When we say last, next, every, this we do not also use at, in, on.

• I went to London last June. (not  in last June)
• He’s coming back next Tuesday. (not  on next Tuesday)
• I go home every Easter. (not  at every Easter)
• We’ll call you this evening. (not  in this evening)

At, in (place = tempat)

In biasanya dipakai di depan nama negeri dan kota besar, atau didepan nama tempat di mana seseorang pada waktu berbicara. Sedangkan at dipakai di depan nama kota kecil dan desa, atau pada waktu membicarakan suatu tempat yang jauh.

I passed my holidays at my grandma’s  house. Aku melewatkan hari-hari liburku di rumah nenek ku

He lives in London. Ia tinggal di London

At, in, on (time = waktu)

At dipakai dengan waktu yang tepat, misalnya at two o’clock, at dawn, at noon, at sunset, at midnight dan sebagainya. In dipakai dengan suatu bagian waktu, misalnya in the morning, in June, in summer, in 1997, in the year 1997 dan sebagainya. On dipakai dengan nama hari atau tanggal, misalnya on Saturday, on August 10, on New Year’s Day, dan sebagainya.

I usually get up at six o’clock. ( Saya biasanya bangun pada pukul enam)

He takes a walk in the morning. (Ia berjalan-jalan pada pagi hari)

The ship will arrive on Monday.( Kapal itu akan tiba pada hari senin)