YOU SAID:
today i will eat cake
INTO JAPANESE
今日はケーキを食べます
BACK INTO ENGLISH
I eat cake today
INTO JAPANESE
今日はケーキを食べる
BACK INTO ENGLISH
Eat cake today
INTO JAPANESE
今日ケーキを食べる
BACK INTO ENGLISH
Eat cake today
That didn't even make that much sense in English.