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在以计算机为代表的现代信息技术将人类社会推入全新的媒体时代。随着现代技术的飞速发展,各种多媒体技术和现代化的辅助教学手段开始进入课堂。教学话语已不再是单单的老师讲授,学生听的单一模态或双模态话语的使用,教学话语的多模态性已经成为趋势,也是近年一个重点研究领域。研究多模态话语的教师主体模态、学生主体模态以及教师主体辅以其他模态来共同配合完成交际目的。因为这些不同的模态各自都是一个符号系统,在合适的语境中表达意义,实现交际意义目的。
Modern information technology, represented by computers, has pushed human society into a new era of media. With the rapid development of modern technology, various multimedia technologies and modern auxiliary teaching methods begin to enter the classroom. Teaching discourse is no longer a single teacher lecture, students listen to a single modality or dual modal discourse, multimodal teaching discourse has become a trend, but also a key area of research in recent years. Research on multi modal discourse teacher modality, student modality and teacher modality combined with other modalities to accomplish the communicative purpose. Because each of these different modalities is a symbolic system, it expresses its meaning in a proper context and achieves the purpose of communicative meaning.