Quoting Malinche:

Merhabalar!

I have doubts about how build this sentences. Help, please!

Are you at home?

evdesin mi?
evde misin?
evdesin misin?

Which of them are correct?

Are you turkish?

Türklü müsün?

What will be the grammar structure to buil this kinds of sentences?

Teşekkürler

Quoting bod:

To make a yes/no question of this form you start with a statement:
Bu yeşil bir araba - this is a blue car
you then add the interrogative particle mi
Bu yeşil bir araba mi - is this a blue car?

When it is applied to a verb, the possessive suffix is moved to the end of the interrogative particle:
yemek istiyorsun - you want food
yemek istiyor musun - do you want food?

Quoting bod:

To make a yes/no question of this form you start with a statement:
Bu yeşil bir araba - this is a blue car
you then add the interrogative particle mi
Bu yeşil bir araba mi - is this a blue car?

When it is applied to a verb, the possessive suffix is moved to the end of the interrogative particle:
yemek istiyorsun - you want food
yemek istiyor musun - do you want food?

Quoting Ade1:

bu yesil bir arabadir=this is a green car
bu yesil bir araba midir?=is this a green car

Quoting bod: