According to the characteristics and functions of their formation, Lv Xu divided English pun into three types, they are homophonic puns, homographic puns, puns on both pronunciation and meaning.

• 并凭据其布局因素所起的作用，再细致地探究了吕煦把英语双关重要分为三类：同音双关、同词双关、音义双关。