YOU SAID:
hello brother, what did you do at school today?
INTO JAPANESE
こんにちは兄弟、今日は学校で何をしましたか?
BACK INTO ENGLISH
Hi brothers, what did you do at school today?
INTO JAPANESE
こんにちは兄弟、あなたは今日学校で何をしましたか?
BACK INTO ENGLISH
Hi brothers, what did you do at school today?
That didn't even make that much sense in English.