In, On, At: Mastering Prepositions for Time and Place

“I’ll meet you… in Monday? At Monday? On Monday?”

If you’ve ever felt confused by these little words—don’t worry! Prepositions like in, on, and at are tricky because they change depending on the situation. But by the end of this article, you’ll know exactly how to use them for time and place.

Part 1: Prepositions of Time

Let’s look at how we use in, on, and at when talking about time.

Part 2: Prepositions of Place

Now let’s look at in, on, and at when we talk about where something is.

Tips to Remember:

• IN = big things (countries, months, rooms)

• ON = flat things (surfaces, days, screens)

• AT = specific points (times, places, events)

Want to test your preposition skills and learn more about it?

We created printable worksheets with Japanese translations so you can understand better and practice more!

🔜 Coming soon — grammar bundles & worksheets will be available here!
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Disclaimer!

English has many exceptions, and sometimes native speakers break the rules too! The explanations here are meant to give you a strong foundation, but don’t worry if you come across something different in real life. With practice and exposure, it will all start to feel more natural