According to introducing, at present Guangzhou opern already completed the construction volume of 70%, thematic steel structure has sealed a top.
据介绍，现在广州歌剧院已完成了70%的施工量，主题钢结构已经封顶。
Actually, thematic structure, information structure and cohesion system are interrelated constituents of Textual Function and they play distinct roles respectively in text construction.
事实上，主位结构、信息结构和衔接系统同属于语篇功能的三大子系统，三者在构建语篇方面是统一的有机整体。
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