Research on impersonal passive in Indo-European

这个研究项目的主题是印欧语言中的非人称被动语态。被动句一般只能由动词带宾语（及物动词）的句子构成，但在某些语言如梵语、拉丁语或现代德语中，被动句也可以由不及物动词的句子构成，成为一种特殊的句子类型，没有主格主语作为客观被动。本研究解释了传统语法学无法解释的被动语态这一语法现象的形成、发展和衰落的过程，并将研究成果发表在《梵语初级语法》和《历史交际理论导论》中。

The theme of this research project is the impersonal passive in Indo-European languages. Passive sentences can be generally formed exclusively from sentences of verbs with accusative object (transitive verbs), but in some languages as Sanskrit, latin or modern German they can be formed also from sentences with intransitive verbs and into a special sentence type without nominative subject as impersonal passive. This research explained the process of formation, development and decline of this grammatical phenomen of impersonal passieve that the traditional grammar could not make clear and published the results as "Elementary Sanskrit Grammar" and "Introduction to the historical communication theory".