✔ 最佳答案
A roof is for covering an area.
A roof forms the top of a building.
Prepositions:
Peter is sitting on the roof.
彼得坐在屋頂上。
A bird is flying above the roof.
一隻鳥兒在屋頂上飛行。
Although Mary and John have divorced, they continue to live under the same roof.
雖然瑪莉和約翰已離婚,但他們仍住在同一所房子裡。
Hope these examples can help you.