Questions & Answers about Jag sitter på trappan och dricker kaffe.
In Swedish you usually use a posture verb (like sitter, står, ligger) instead of är to describe how and where someone is positioned.
- Jag sitter på trappan = literally I sit on the stairs, but it means I am sitting on the stairs right now.
- Jag är på trappan would mean I am on the stairs (located there), but it does not clearly say that you are sitting; you could be standing or doing something else.
So:
- To say what you are doing with your body right now: use sitter / står / ligger.
- To say only where you are (location): use är.
That is why Jag sitter på trappan is the normal, natural choice here.