YOU SAID:

when you left this evening you said you'd be back in a little while

INTO JAPANESE

あなたが今晩出かけたとき、あなたはすぐに戻ってくると言った

BACK INTO ENGLISH

When you went out tonight you said you'd be right back

INTO JAPANESE

今夜出かけたとき、すぐ戻るって言ったでしょ

BACK INTO ENGLISH

When you left tonight, you said you'd be right back

INTO JAPANESE

今夜出かける時、すぐ戻るって言ったでしょ

BACK INTO ENGLISH

When you left tonight, you said you'd be right back