YOU SAID:

Boi gonna eat that but

INTO JAPANESE

ボイはそれを食べるつもりですが

BACK INTO ENGLISH

Boy is going to eat it

INTO JAPANESE

男の子はそれを食べるつもりです

BACK INTO ENGLISH

Boys will eat it

INTO JAPANESE

男の子が食べます

BACK INTO ENGLISH

Boy eats

INTO JAPANESE

少年が食べる