YOU SAID:

Mustn't talk when your mother is not here.

INTO JAPANESE

あなたのお母さんがここではないときに話してはなりません。

BACK INTO ENGLISH

Your mother is here but not when speaking is not.

INTO JAPANESE

あなたのお母さんはここがないないときは話します。

BACK INTO ENGLISH

Speak not when your mother isn't here.

INTO JAPANESE

ないときあなたのお母さんのここでないを話します。

BACK INTO ENGLISH

Not your MOM's here do not speak.

INTO JAPANESE

あなたのお母さんここで話すことはありません。

BACK INTO ENGLISH

Your mother does not speak here.

INTO JAPANESE

あなたのお母さんはここで話しません。

BACK INTO ENGLISH

Your mother will not talk here.

INTO JAPANESE

あなたのお母さんはここで話しません。

BACK INTO ENGLISH

Your mother will not talk here.