本文对基于PPT/PPS/WMV技术并诉诸于读者视觉、听觉的多模态小品的多模态性、语篇特征和模态间的互动性进行研究,并得出结论:这项现代化多媒体信息技术与语言艺术完美结合的产物能在当今信息过剩的交际生态环境中脱颖而出,是各模态符号意义的确定性与不确定性之间互动的结果,也是各模态符号情感功能和理性功能互动的结果。 This paper studies the multi-modalities, discourse features and modal interactions based on PPT / PPS / WMV techniques and appeals to readers’ visual and auditory multimodal essays and concludes that this modern multimedia The perfect combination of information technology and language art can stand out in today’s communicative environment with excess information, as a result of the interaction between the certainty and uncertainty of modal symbols, as well as the emotional and rational functions of modal symbols The result of interaction.