YOU SAID:

私は四日間何も食べていません

INTO JAPANESE

私は四日間何も食べていません

BACK INTO ENGLISH

I've eaten nothing for four days.

INTO JAPANESE

私は4日間何も食べていません。

BACK INTO ENGLISH

I have not eaten anything for four days.

INTO JAPANESE

私は4日間何も食べていません。

BACK INTO ENGLISH

I have not eaten anything for four days.