Prepositions like IN, ON, and AT can be confusing for English learners because they don't always translate directly from other languages. Here is a simple guide to using them for time and place.

Prepositions of Time

• IN (Months, Years, Seasons): in July, in 1999, in the summer.
• ON (Days and Dates): on Monday, on July 4th, on New Year's Day.
• AT (Specific Times): at 3 o'clock, at noon, at midnight.

Prepositions of Place

• IN (Enclosed spaces/Areas): in a box, in London, in a room.
• ON (Surfaces): on the table, on the wall, on the floor.
• AT (Specific points): at the bus stop, at the door, at the top of the page.