3 years before=3 years ago?thank you

3 years before=3 years ago?thank you BEST BEFORE 3YEARS FROM DATE OF MANUFACTURE he has gone home 3 years before.正确吗 Three years ago与Before three years的区别是什么?3Q it was 3 years before i had graduated from the university 对吗?也就是it is 过去式 before 过去完成时 请问it be…before…的句型用法…比如说it was 3 years before he … it will be 3 years before she returns from Singapore 这是什么结构 It took them nearly 3 years ( before )the new stadium was completed.为什么不用until jim has spent 3 years ( )chinese before he came to china Alearned Blearn Clearning Dto learn four years before it was 和it is +before这两个的时态要注意吗it is 3 years before they.和it was 3 years before they.从句主句后面的时态怎么用 英语翻译1、We are going over to the macaroni field of Calabria.2、The whole village has been working day and night gathering and threshing this year's crop before the September raina.3、Signor Fratelli,the present champion,has won it every yea 英语翻译DEAR BELOVED,PLEASE UTILIZE THE FUNDS JUDICIOUSLY FOR HUMAN BENEFIT.I am the above named person from LONDON.I am married to MR PATRICK GERALD WELSH who worked with BRITISH HIGH COMMISSION in CANADA for nine years before he died in the yea 可以说since many years before yea high yea high ago是不是等于before?比如ten years ago是不是等于ten years before等于before ten years There is only five years to do what you want ,yea...only five years ,so just do it.这句话语法正确吗?如错了,怎么改?