Prepositions of Time

Prepositions of time adalah kata depan atau preposisi yang digunakan untuk menunjukkan waktu. Preposisi yang sering dipakai adalah at, in, dan on.

Prepositions of time (at, in, on):
- at untuk menunjukkan waktu tertentu yang pasti atau tepat (precise time), misalnya: at 3 0’clock, at 10.30 am, at sunset, at noon, at the moment etc.
- in untuk menyatakan bulan, tahun, abad, atau satuan waktu yang panjang (months, years, centuries, and long periods), misalnya: in June, in summer, in 1998, in the past/future, in the Dark Age etc.
- on untuk hari dan tanggal (days and dates), misalnya: on Sunday, on Friday, on 30 April, on Independence Day, on her birthday etc.

Contoh prepositions of time dalam kalimat:
- I have a meeting at 9 am.
- The shop closes at midnight.
- There should be a lot of progress in the next century.
- Do you work on Mondays?
- Her birthday is on 30 April.

Berikut ini frase preposisi at, in, on yang sering digunakan.
at: at night, at the weekend, at the same time, at present, at Christmas, at Lebaran.
in: in the morning, in the mornings, in the afternoon(s), in the evening(s).
on: on Tuesday morning, on Saturday mornings, on Sunday afternoons, on Monday evening.

At, in, on
tidak digunakan bersama dengan last, next, every, dan this.
- I went to Jakarta last April. (bukan in last April)
- He's coming back next Friday. (bukan on next Friday)
- I go home every Lebaran. (bukan at every Lebaran)
- We'll call you this morning. (bukan in this morning)


Selain preposisi at, in, dan on, preposisi for dan since juga digunakan untuk menunjukkan jangka waktu tertentu.

Prepositions of time (for and since):
- for untuk menyatakan ukuran waktu atau seberapa lama suatu aktivitas dilakukan
- since dipakai untuk ukuran waktu yang menyatakan sejak kapan suatu aktivitas dilakukan.

Contoh preposisi for dan since dalam kalimat:
- He held his breath for seven minutes.
- She's lived there for seven years.
- He's worked here since 1970.
- She's been sitting in the waiting room since two-thirty.


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