a series of 一系列,一连串

  above all 首先,尤其是 

  after all 毕竟,究竟

  ahead of 在...之前 

  ahead of time 提前

  all at once 突然,同时 

  all but 几乎;除了...都

  all of a sudden 突然 

  all over 遍及

  all over again 再一次,重新 

  all the time 一直,始终

  all the same 仍然,照样的 

  as regards 关于,至于

  anything but 根本不 

  as a matter of fact 实际上

  apart from 除...外(有/无) 

  as a rule 通常,照例

  as a result(of) 因此,由于 

  as far as ...be concerned 就...而言

  as far as 远至,到...程度 

  as for 至于,关于

  as follows 如下 

  as if 好像,仿怫

  as good as 和...几乎一样 

  as usual 像平常一样,照例

英语四级最后30天备考核心词组: http://insuns.com/article/17961-1.html