你好!

if ever 英[if ˈevə] 美[ɪf ˈɛvɚ]
[词典] 很少，难得; 如果有过的话;
[例句]I became a distraught, worried mother, a useless role if ever 汽刘断there was one
我变成了一个忧心如焚的母亲，一个全无用处的角色。