YOU SAID:

I farted really hard.

INTO JAPANESE

私は本当に一生懸命おならしました。

BACK INTO ENGLISH

I really worked hard.

INTO JAPANESE

本当に一生懸命働きました。

BACK INTO ENGLISH

I worked really hard.

INTO JAPANESE

私は本当に一生懸命働いた。

BACK INTO ENGLISH

I worked really hard.