YOU SAID:

I need to do homework

INTO JAPANESE

私は宿題をする必要があります。

BACK INTO ENGLISH

You need me to do my homework.

INTO JAPANESE

あなたは私が私の宿題を行う必要があります。

BACK INTO ENGLISH

You should do my homework I have.

INTO JAPANESE

私が私の宿題を行う必要があります。

BACK INTO ENGLISH

I must do my homework.

INTO JAPANESE

宿題、片付けなきゃ。

BACK INTO ENGLISH

I must do my homework.