Learn English Prepositions of Place: In, On, Under (Pre-A1) — Pre-A1 English grammar lesson by Langcom

Learn English Prepositions of Place: In, On, Under (Pre-A1)

Raúl Maguiña

Langcom Founder | Cambridge and SIELE Examiner

September 6, 2026

PRE-A1✏️ Grammar⏱️ 3 min read📅 Updated September 2026
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English uses small words called prepositions to tell us where things are. For example, in, on, and under are common prepositions of place. We use in when something is inside a space or container, like The book is in the bag. This means the book is *inside* the bag. We use on when something is on a surface, like The apple is on the table. This means the apple is *touching the top* of the table. And we use under when something is below another thing, like The cat is under the chair. This means the cat is *below* the chair, not touching it. These words are very important for describing locations in English. Learning them helps you speak and understand simple sentences about where objects and people are. Practice with examples to remember them easily and improve your basic English communication.

What Are Prepositions of Place?

Prepositions of place are small words. They tell us the position of a person or a thing. They answer the question ‘Where?’

Today, we will learn three important prepositions:

  • in
  • on
  • under

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When Do We Use 'In'?

We use in when something is inside a space or a container. Think of it as 'inside'.

  • The object is surrounded by something.
  • The object is part of a larger area.

Look at these examples:

  • The pencils are in the box.
  • My keys are in my pocket.
  • The fish are in the water.

When Do We Use 'On'?

We use on when something is on a surface. Think of it as 'touching the top'.

  • The object is resting on a flat surface.
  • The object is attached to a surface.

Look at these examples:

  • The book is on the table.
  • The picture is on the wall.
  • The cat is sleeping on the sofa.

When Do We Use 'Under'?

We use under when something is below another thing. It means 'below' or 'beneath'.

  • The object is at a lower level.
  • The object is covered by something else.

Look at these examples:

  • The ball is under the bed.
  • The dog is under the tree.
  • My shoes are under the chair.
Summary of Prepositions of Place
Preposition Meaning Example
in Inside a space or container The keys are in the bag.
on On a surface The cup is on the table.
under Below something The cat is under the car.

Examples

  • The juice is in the glass.
  • My phone is on the desk.
  • The remote control is under the pillow.
  • The toys are in the basket.
  • The clock is on the shelf.
  • The mouse is under the table.

Practice

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Common mistakes for Spanish speakers

Spanish speakers often use 'en' for both in and on. In English, these words are different and important.

  • Incorrect: The pen is en the book. (If it's on top of the book)
  • Correct: The pen is on the book.
  • Incorrect: The water is on the bottle. (If it's inside the bottle)
  • Correct: The water is in the bottle.

Remember to think: Is it *inside* a container or *on* a surface?

Frequently asked questions

What is a preposition of place?

A preposition of place is a word like in, on, or under. It tells you where something is located.

How can I remember 'in', 'on', and 'under'?

Think of simple pictures: in (inside a box), on (on top of a table), under (below a chair). Practice with objects around you!

Can 'in' mean 'on' sometimes?

No, not usually. In means inside a space or container. On means on a surface. They have different meanings in English.

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About the Author: Raúl Maguiña

Raúl Maguiña is the Director of Asociación Educativa Langcom, an Authorized Cambridge English Preparation Centre in your country. With over a decade of experience in language education and international certification, he has helped thousands of students, teachers and educational institutions across 25 countries achieve Cambridge, IELTS, TOEFL, and Michigan English certifications.

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