Lesson

Under, behind, opposite

Position prepositions

≈ 15 min 8 block(s)

Text

What are 'under', 'behind', and 'opposite'?

These are spatial prepositions that describe the position of one object relative to another.

  • 'Under' = below something (vertical relationship).
  • 'Behind' = at the back of something, out of direct view (depth relationship).
  • 'Opposite' = facing or on the other side of something (across from).

Table

Reference: 'under', 'behind', 'opposite'

Preposition Meaning Example
under below something (directly beneath) The server is stored under the desk.
behind at the back of something or out of direct view The printer is behind the filing cabinet.
opposite facing or across from something (on the other side) Her office is opposite the conference room.
in front of the area before something (facing away from the back) The receptionist sits in front of the entrance.
next to immediately beside something The coffee machine is next to the microwave.

Tip

Key rules for these prepositions

How to choose the right word:

  • Use 'under' when something is directly below another object (vertical).
  • Use 'behind' when something is at the back or hidden from direct view (depth).
  • Use 'opposite' when two things face each other or are across a space (often used with rooms/faces).

Think about vertical (under), depth (behind), and facing/across (opposite).

Example

Examples in context

The invoice was under the stack of papers on my desk.

Please check the router behind the cabinet if the internet is slow.

My office is opposite the HR department.

The USB drive is behind the monitor, next to the power strip.

Tip

Common mistakes to avoid

Universal errors learners make with spatial prepositions:

  • Confusing 'under' and 'behind' — 'under' = below; 'behind' = at the back.
  • Using 'opposite to' unnecessarily — usually 'opposite' alone is enough.
  • Mixing up 'in front of' and 'opposite' — they describe different relationships.
  • Forgetting articles: 'The printer is behind the cabinet' (include 'the' when appropriate).

Focus on the spatial relationship (vertical vs. depth vs. facing) rather than literal synonyms.

Quiz

Choose the correct sentence using 'opposite':

Hint: Think about how to say two places face each other.

Quiz

Complete: The meeting room is _____ the reception desk.

Hint: Think about a room that faces another room across a space.

Quiz

Choose the sentence that correctly shows something is below another object:

Hint: Focus on the preposition that indicates 'below'.

Key Points

Vocabulary

under

preposition CEFR A1 //ˈʌndər//

In or to a position below something.

The files are under the keyboard.

Vocabulary

behind

preposition CEFR A2 //bɪˈhaɪnd//

At the back of something; not in front of it.

The spare keys are behind the noticeboard.

Vocabulary

opposite

preposition CEFR B1 //ˈɒpəzɪt//

Facing something else, typically across a space.

Her desk is opposite mine in the open-plan office.

Expression

next to

preposition CEFR A1 //nɛkst tə//

Beside or adjacent to something.

Please put the brochures next to the sign-in sheet.

Expression

in front of

preposition CEFR A2 //ɪn frʌnt əv//

Located before something, usually facing away from its back.

The CEO stood in front of the team to present the quarterly results.

Vocabulary

beneath

preposition CEFR B2 //bɪˈniːθ//

Formally means 'under'; often used in writing or formal speech.

Please sign beneath your printed name.