YOU SAID:

i ate a sandwich with your mom today

INTO JAPANESE

今日お母さんとサンドイッチを食べた

BACK INTO ENGLISH

I had a sandwich with your mother today.

INTO JAPANESE

今日はお母さんとサンドイッチを食べた。

BACK INTO ENGLISH

I had a sandwich with my mother today.

INTO JAPANESE

今日は母とサンドイッチを食べた。

BACK INTO ENGLISH

I had a sandwich with my mother today.