YOU SAID:

Hey, I am doing something useless.

INTO JAPANESE

ねえ、私は何かを無駄をしています。

BACK INTO ENGLISH

Hey, I'm wasting something.

INTO JAPANESE

ねえ、私は何かを無駄です。

BACK INTO ENGLISH

Hey, I do something useless.

INTO JAPANESE

ねえ、何の役に立たないか。

BACK INTO ENGLISH

Hey, what's useless?

INTO JAPANESE

ねえ、何が駄目か。

BACK INTO ENGLISH

Hey, what's not?

INTO JAPANESE

ねえ、何はないですか。

BACK INTO ENGLISH

Hey, what is not?

INTO JAPANESE

ねえ、何はないですか。

BACK INTO ENGLISH

Hey, what is not?