İs oturuyorsun also correct?
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"