five years before 用法和five years ago的区别

five years before 用法和five years ago的区别 Thirty five years ago和Thirty five years before有什么区别? Five years ago five years old 和five-year-old的区别 “after five years”和“five years later”有什么区别 many years before和many years ago的区别 ten years before和ten years ago的区别? 用five years ago造句 His father( )five years ago. five-year=old和five years old用法有什么区别啊 ten years before 和ten years ago 有什么区别? for twenty-five years和for over twenty-five years在时态用法上一样吗