YOU SAID:
Sumimasen nihongo ga wakarimasen
INTO JAPANESE
すみませんにほんごがわかりません
BACK INTO ENGLISH
Excuse me, sir, but I don't understand your question.
INTO JAPANESE
すみませんが、私はあなたの質問を理解していません。
BACK INTO ENGLISH
I'm sorry, but I don't understand your question.
INTO JAPANESE
申し訳ありませんが、あなたの質問は理解できません。
BACK INTO ENGLISH
Sorry, I can't understand your question.
INTO JAPANESE
申し訳ありませんが、ご質問が理解できません。
BACK INTO ENGLISH
Sorry, we don't understand your question.
INTO JAPANESE
申し訳ありませんが、ご質問を理解できませんでした。
BACK INTO ENGLISH
Sorry, we couldn't understand your question.
INTO JAPANESE
申し訳ありませんが、ご質問を理解できませんでした。
BACK INTO ENGLISH
Sorry, we couldn't understand your question.
That didn't even make that much sense in English.