English grammar · lesson 8 of 30 · free

Prepositions of place and time — English grammar for kids

A preposition shows where or when something is: in the box, on the wall, under the sofa, at the gate. For time there is a simple rule: in for months and years, on for days and dates, at for clock times.

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The grammar rule

Big, smaller, exact — ““in” for long times (months, years), “on” for days and dates, “at” for an exact time”

  1. Time: on + days and dates (on Monday, on 15 August); in + months, years, seasons and parts of the day (in July, in 2027, in summer, in the morning); at + clock times and night, noon, midnight (at 9:30, at night).
  2. Place: in = inside (in the river); on = touching a surface (on the wall); at = a point (at the bus stop); under = below (under the sofa).
  3. Read the whole sentence and picture it before you choose.

Use it for: Writing dates and times, describing where things are, and invitation and diary writing.

Worked example: Fill in in, on or at: We will visit Nani ___ Monday. → on

  1. Monday is a day of the week.
  2. Days and dates take “on”: on Monday.

Check: Compare: on Monday, in March, at 9:30 — a day, a month, a clock time ✓

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