YOU SAID:
He sandwich, he eating, he full.
INTO JAPANESE
彼はサンドイッチを食べて、お腹いっぱいです。
BACK INTO ENGLISH
He eats a sandwich and is full.
INTO JAPANESE
彼はサンドイッチを食べて満腹です。
BACK INTO ENGLISH
He is full after eating the sandwich.
INTO JAPANESE
彼はサンドイッチを食べたら満腹になった。
BACK INTO ENGLISH
He felt full after eating the sandwich.
INTO JAPANESE
彼はサンドイッチを食べると満腹になった。
BACK INTO ENGLISH
He felt full after eating the sandwich.
That didn't even make that much sense in English.