Adverbs can be used to indicate time, scope, extent, repetition, frequency, affirmation, negation, tone, and feelings, etc. Without any modifiers, they are used as adverbial.

• 按表示意义的不同副词可分为:时间,范围,程度,重复、频率,肯定、否定,语气,情状。副词一般不受其它词类的修饰,它的主要语法功能是作状语。