YOU SAID:

Allison has her opera audition tomorrow, so she shouldn't stay up very late and waste her voice.

INTO JAPANESE

アリソンは明日オペラのオーディションがあるので、夜更かしして声を無駄にしてはいけません。

BACK INTO ENGLISH

Alison has an opera audition tomorrow, so don't waste your voice staying up late.

INTO JAPANESE

アリソンは明日オペラのオーディションがあるので、夜更かしして声を無駄にしないでください。

BACK INTO ENGLISH

Alison has an opera audition tomorrow, so don't waste your voice staying up late.