YOU SAID:

You can't live unless you have beaten you mother in Mario kart

INTO JAPANESE

マリオカートで母親に勝たなければ生きていけない

BACK INTO ENGLISH

I can't live unless I beat my mother at Mario Kart

INTO JAPANESE

マリオカートで母に勝たないと生きていけない

BACK INTO ENGLISH

I can't live unless I beat my mother at Mario Kart