Şu bina yanıyor olmalı.
- That building must be on fire.
Ben oraya vardığımda, ev yanıyordu.
- When I got there, the house was on fire.
That striker has scored four goals so far - he's on fire!.
... Our ancestors have fire firmly under control by 800,000 years ago. ...
... where Muslim warriors use it to fire cannon balls at Christian crusaders. ...