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)

ラウル・マグイニャ

Langcom 創設者 | ケンブリッジおよびSIELE試験の試験官

9月 6, 2026

PRE-A1✏️ 文法⏱️ 読了時間:3分📅 Updated 9月 2026
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English uses small words called prepositions to tell us where things are. For example, in, on, 、および 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'?

当社では 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'?

当社では 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'?

当社では 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 意味
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.

  • 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.

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

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

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

よくある質問

What is a preposition of place?

A preposition of place is a word like in, on, 、または 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.

関連レッスン

著者について:ラウル・マグイニャ

ラウル・マグイニャ氏は、認定Cambridge English試験対策センターである「Asociación Educativa Langcom」の所長であり、 あなたの国. 。語学教育および国際資格認定の分野で10年以上の経験を持ち、25カ国にわたる数千人の学生、教師、教育機関が、ケンブリッジ英語検定、IELTS、TOEFL、およびMichiganの英語資格を取得できるよう支援してきました。.

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