Question

passa essas frases para forma interrogativa: he is a good dector. they are a teacher. i am o girl. We are a students

Answer 1

Olár!

Para passar frases afirmativas para interrogativas no simple present basta inverter a ordem do verbo e do pronome.
Enquanto que nas frases afirmativas o pronome vem primeiro, nas interrogativas é o verbo que vem na frente:

Aff: He is a good doctor.
Int: Is he a good doctor?

Aff: They are a teacher.
Int: Are they a teacher?

Aff: I am a girl.
Int? Am I a girl?

Aff: We are a students.
Int: Are we a students?