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Aleilei Posted 16 years ago
Grammar

Up stairs or stair?

Hello there,

Could someone explain the difference between stair and stairs? For example, Jam is walking up the stairs/ stair. Which one is correct? Is there any rule when choosing between the singular and plural form of this word in daily talk?

Thanks!
  

Top answer

Stair (n) = one step: One stair on the front porch is broken. Stairs (n) = a set of steps: The stairs in our house are steep. Upstairs (n) = an upper floor of a house: There is a ghost living upstairs.

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1 Answers
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Stair (n) = one step: One stair on the front porch is broken.

Stairs (n) = a set of steps: The stairs in our house are steep.

Upstairs (n) = an upper floor of a house: There is a ghost living upstairs.

Upstairs (adv) = to or on an upper floor of a house: I ran upstairs to see the ghost.

Upstairs (adj) describing an upper floor or p