Things lost never come again为什么要填lost 不填have lost

Things lost never come again为什么要填lost 不填have lost Things lost never come agin 和things lost never come again 那一 tings lost never come Things lost never come again.I am just a passer-by tings lost never coe again once lost such a chance will never come again.为什么不可以理解成 once lost. lost lost time is never found again. Lost time is never foung again. never regret what you have never lost Once lost,it will never come