YOU SAID:
When you leave the shop but realise you left your son
INTO JAPANESE
あなたが店を離れても、あなたが息子を離れたことを認識したら
BACK INTO ENGLISH
If you leave the store and you realize that you left your son
INTO JAPANESE
あなたが店を出て、あなたが息子を離れたことに気づいたら
BACK INTO ENGLISH
If you leave the store and you notice that you left your son
INTO JAPANESE
あなたが店を出て、あなたが息子を去ったことに気づいたら
BACK INTO ENGLISH
If you leave the store and you notice that you left your son
You've done this before, haven't you.