YOU SAID:

im really bored and i dont understand my homework

INTO JAPANESE

私は本当に退屈し、宿題を理解していない

BACK INTO ENGLISH

I'm really bored and don't understand homework

INTO JAPANESE

私は本当に退屈だし、宿題が分からない

BACK INTO ENGLISH

I'm really bored and don't know my homework

INTO JAPANESE

私は本当に退屈だし、宿題がわからない

BACK INTO ENGLISH

I'm really bored and don't know my homework