Is it correct to say ''My first teacher was you'' ?
If someone ask me ''who was your first teacher?''.
Is it correct to answer ''My first teacher was you''. or ''You were my first teacher'' ?

Question

Is it correct to say ''My first teacher was you'' ?
If someone ask me ''who was your first teacher?''. 
Is it correct to answer ''My first teacher was you''. or ''You were my first teacher'' ?

Answer

Yes, the grammar is correct.

BUT if the person is still your teacher then you should reply in the present tense. "You are my first teacher."

Answer

Hi!
The correct answer is: My first teacher was you

Answer

"You were my first teacher." OR if they're still your teacher, "you are my first teacher."

"My first teacher was you" is grammatical, but it sounds unnatural.

Answer

Thank you Christine!

Answer

Hello Alejandra,  "You were my first teacher" is grammatically correct.  Great question.  If you want to learn more Feel free to take a look at my profile and see what works for you.  Well done and I hope this helps you