连接副词可分为两类，一类是用于连接句子或<a href="./?mention=从句">从句</a>，常见的有<a href="./?mention=therefore">therefore</a>, <a href="./?mention=besides">besides</a>, <a href="./?mention=otherwise">otherwise</a>, <a href="./?mention=however">however</a>, moreover, still, <a href="./?mention=thus">thus</a>, <a href="./?mention=meanwhile">meanwhile</a>等；另一类是用于引导从句或<a href="./?mention=不定式">不定式</a>，主要的有when, why, where, how 等。