副词（adverb，简写为adv）是指在句子中表示行为或状态特征的词，用以修饰动词、形容词、其他副词或全句，表示时间、地点、程度、方式等概念。副词可分为：地点副词、方式副词、程度副词、疑问副词和连接副词。
分为以下几类：
时间和频率副词
now, then, often, always, usually, early, today, late, next, lastday, already(已经), generally(一般地), frequently（频繁）.
seldom（很少地）, ever, never, yet, soon, too, immediately（立即）, finally, shortly（很快）, before, ago, sometimes, yesterday, once, twice.
地点副词
here, there, everywhere, anywhere, somewhere, in, out, inside, outside, above, below, down, back, forward（向前地）, home, upstairs(楼上地), downstairs, across, along, round , around, near, off, past, up, away, on.
方式副词
carefully, properly(适当地), anxiously(焦虑地), suddenly, normally(正常地), fast, well, calmly(冷静地), politely(有礼貌地), proudly(自豪地), softly, warmly, slowly, badly, hard, bravely.
程度副词
much, little, very, rather(相当), so, too, still, quite, perfectly(完美地), enough, extremely(非常), entirely(整个), almost, slightly(细小地), hardly.
疑问副词
how, when, where, why.
关系副词
when, where, why.等。
连接副词
therefore(因此), moreover(此外), however, otherwise(另外的), then, when, where, how, why 等。
参考(照抄)
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