A floor can be the surface inside a room or one level of a building.

The idea

Use on the floor for the surface and on the ground floor for a building level. Count levels with three floors.

Examples

  • The book is on the floor.
  • She cleaned the kitchen floor.
  • The building has three floors.
  • Our office is on the ground floor.
  • He sat on the floor beside the bed.
  • In the UK, the second floor has two rooms.

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Watch out

Numbering differs: in the UK the ground floor is usually below the first floor; in the US first floor usually means the ground-level floor.

Try it yourself

  1. Choose the indoor walking surface. The book lies on the surface people walk on: the ___. (floor / wall)

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    floor

    The floor is the surface under the book.

  2. Choose the plural for building levels. The building has three ___. (floor / floors)

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    floors

    Floors counts the building levels.

  3. Choose the usual US term for ground level. In the US, the ground-level floor is usually the ___. (first floor / second floor)

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    first floor

    US first floor usually means the ground-level floor.

Use it today

Describe something on a floor and name a level in a building.