A roof is the outside covering on top of a building.
The idea
Roof is countable: a roof, two roofs. Use on the roof for something resting on its outside surface.
Examples
- The roof keeps the rain out.
- A bird landed on the roof.
- Their house has a red roof.
- Snow covered the roofs overnight.
- Water is coming through the roof.
- They repaired the roof before winter.
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Watch out
Do not confuse the roof outside with the ceiling, the upper inside surface of a room.
Try it yourself
Choose the correct word. The house has a new ___. (roof / floor)
Show answer or example answer
roof
roof: This is the building’s outside cover.
Choose the correct word. The two ___ are covered in snow. (roofs / roof)
Show answer or example answer
roofs
roofs: Two covers require the plural ending -s.
Choose the correct word. A cat is sitting ___ the roof. (on / under)
Show answer or example answer
on
on: The cat is resting on the outer surface.
Practice round
Answer questions and rebuild English sentences to practise. Your score is shown.
Choose the correct word. The house has a new ___. (roof / floor)
Choose the correct word. The two ___ are covered in snow. (roofs / roof)
Choose the correct word. A cat is sitting ___ the roof. (on / under)
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
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Describe the roof of a building you know.