ever since是“从那时起,自那时以来 ”的意思.在句中,做介词或连词用均可以.要注意的是,作连词时,所连接的主句与从句的谓语时态变化.
如：I have known him ever since I was a child.我自孩提时代起就已经认识他了.主句用一般完成时态,从句用过去时态.表示主语所发出的动作.
Eleanor is always a penny-pinch ever since she has been young.埃莉诺从年轻时候起就一直是个非常吝啬的人.主句用一般现在,从句用现在完成时态.表示主语的状态或本质特性.
I've been on the go ever since eight o'clock this morning.我从早晨八点钟起就一直忙个不停.在此句中ever since作介词用,连接一个表时间的短语.
供你参考,