副词的种类：
1) 时间副词：常见的有now,then,soon,ago,recently,lately,later,before,early,today,tomorrow,yesterday,tonight,suddenly,immediately,still,already,just等.
(2) 地点副词：常见的有here,there,up,down,away,nearby,home,ahead,abroad,indoors,overseas,upstairs,downstairs等.
(3) 方式副词：表示行为方式的副词大多以-ly结尾,常见的有quietly,heavily,warmly,carefully,happily,politely,angrily等.
(4) 频度副词：常见的有always,usually,often,frequently,constantly,occasionally,sometimes,seldom,hardly,rarely,never等.
(5) 程度副词：常见的有fairly,pretty,rather,quite,very,much,too,greatly,almost,nearly,half,highly,deeply,partly,perfectly,really等.
(6) 连接副词：这类副词有相当于并列连词的therefore,besides,otherwise,however,moreover,furthermore,still,thus,meanwhile等,
(7) 关系副词：就是引导定语从句的when,where,why等.
(8) 疑问副词：就是用于引出特殊疑问句的when,where,why,how等.
