从主位结构角度分析被动语态在英语科技语篇中的语篇功能

Analyzing the textual function of passive voice in EST discourse from the perspective of thematic structural

被动语态的使用由来已久,作为一种句法资源,被动语态不仅和主动语态关系密切,它的选择和具体的语境也是分不开的。在英语科技语篇(EST)中,被动语态的大量使用已成为一项重要的文体特征。因此本文从系统功能语法中的主位结构的角度出发,对英语科技语篇(EST)中的被动语态作语篇分析。

The passive voice is a very old structural resource,which has a close relation with active voice.At the same time,the choice of it can't separate from the context.In EST (English for Science and Technology)discourse,the passive voice plays a significant role in the organization.On the basis of Halliday's Systemic-functional Grammar,this passage analyzes the passive voice in EST discourse from the perspective of thematic structure.