YOU SAID:
You are being very rude and need to do chores as punishment.
INTO JAPANESE
あなたはとても失礼なので、罰として雑用をする必要があります。
BACK INTO ENGLISH
You are so rude that you will have to do chores as punishment.
INTO JAPANESE
あなたはとても失礼なので、罰として雑用をしなければならないでしょう。
BACK INTO ENGLISH
You are so rude that you will have to do chores as punishment.
That didn't even make that much sense in English.