YOU SAID:

is that your teachers brother

INTO JAPANESE

あなたの先生の兄弟ということです

BACK INTO ENGLISH

Is your teacher ’s brother

INTO JAPANESE

あなたの先生の兄弟ですか

BACK INTO ENGLISH

Are you a brother of your teacher

INTO JAPANESE

あなたはあなたの先生の兄弟ですか

BACK INTO ENGLISH

Are you a brother of your teacher