YOU SAID:

i will go eat the lettuce today

INTO JAPANESE

今日はレタスを食べに行きます

BACK INTO ENGLISH

I'm going to eat lettuce today

INTO JAPANESE

今日はレタスを食べるつもりです

BACK INTO ENGLISH

I will eat lettuce today

INTO JAPANESE

今日はレタスを食べます

BACK INTO ENGLISH

I eat lettuce today

INTO JAPANESE

今日はレタスを食べる

BACK INTO ENGLISH

I eat lettuce today