ever after、ever before与ever since

ever after  从此以后

例:They got married and lived happily ever after. 他们结婚了,从此过上了幸福的生活。(人教版高中英语必修三P15)

ever before 以前,在此以前

例:Technology has made our systems faster, safer, cleaner and more reliable than ever before. 技术使我们的系统变得比以前更快捷、更安全、更干净、更可靠。(FORBES)

ever since 从那以来

例:He was laid off a year ago, and has been looking for work ever since. 一年前他被解雇了,从那以来到现在一直在找工作。(NPR)