YOU SAID:
my teacher has the same birthday as my dad.
INTO JAPANESE
私の先生は、私の父と同じ誕生日を持っています。
BACK INTO ENGLISH
My teacher, I have the same birthday with my father.
INTO JAPANESE
先生は、私は父と同じ誕生日を持っています。
BACK INTO ENGLISH
Teacher, I have the same birthday as his father.
INTO JAPANESE
先生、私は父親と同じ誕生日を持っています。
BACK INTO ENGLISH
Teacher, I have the same birthday as his father.
That didn't even make that much sense in English.
