介词和副词的用法区别

问题：介词和副词的用法区别

答案：↓↓↓

蒋春福的回答：

网友采纳　　副词分类1)时间和频率副词:now,then,often,always,usually,early,today,late,next,lastday,already,generally,frequently,seldom,ever,never,yet,soon,too,immediately,finally,shortly,before,ago,s...