曾经几时用英语

翻译如下曾几何时根据语境only a short while ago; before long; it was not long before ...; in none too lengthy period;都可以

曾几何时céng jǐ hé shíonly a short while ago; before long; it was not long before ...; in none too lengthy period; not long afterwards (after); not long since:猖獗一时的匪帮，曾几何时，遭到了彻底覆灭。 The gang was on the rampage for a time, but before long it was completely overthrown.

曾几何时的确不能直译，如果非要译，就只能译为很久以前，比较地道的译法有long long ago,once upon a time

“曾几何时”中文意思是才过了多少时间，指没过多久。因此其翻译是before long；not long after； not long since。