İs oturuyorsun also correct?
They are not always interchangeable, but in this sentence oturmak would have the same meaning as yaşamak.
I am not a usage expert, but there are others around in the forums who are.
I would like to understand the difference between yaßmak and oturmak too.
Can someone please explain the difference between oturuyor and yaşıyor? I thought I'd worked out that it was the same as habiter and vivre in French but now I'm confused.
Why Sen? Won't Siz also do?
Yes, but if you use "siz" you must change the verb accordingly. "Sen yasıyorsun/Siz yaşıyorsunuz"