YOU SAID:
im going to eat a sandwich
INTO JAPANESE
サンドイッチを食べに行きます
BACK INTO ENGLISH
I'm going to eat a sandwich.
INTO JAPANESE
サンドイッチを食べます。
BACK INTO ENGLISH
eat a sandwich
INTO JAPANESE
サンドイッチを食べる
BACK INTO ENGLISH
eat a sandwich
That didn't even make that much sense in English.