A word generally used in front of a verb or an adjective to express time, degree, scope, repetition, negation, possibility or tone of speech, etc. is called an adverb.

• 修饰动词、形容词，表示动作、行为、发展变化，性质状态的程度，范围，时间，频率，然否、语气或情貌的词叫副词。