Anaphora is a process where a word or phrase refers back to another word or phrase, which was used earlier in a text or 零形回指是三种回指形式之一，指的是通过零形式从先行项那里获得指代。
Zero anaphora is a type of anaphora in which a form may be omitted because its referent is known or can be guessed.本文主要从零形回指的识别和分类、零形回指使用的必要性以及零形回指使用的可及性三个方面进行了分析与探讨。