Global Journal of Human Social Science, G: Linguistics and Education, Volume 23 Issue 3

expression of meaning, and the various modes have diversed potential meanings at the same time. Systemic functional multimodal discourse analysis is also derived from Halliday's Systemic Functional Grammar, which is the core framework of the analysis method. Unlike the approach of social symbolic marking (top down), the contextual approach and specific ideological orientation, the SF-MDA is from the bottom to up. Related research includes a range of other multimodal texts, for instance, hypermedia (Djonov, 2007), television discourse (Bednarek and Martin, 2010), online newspaper (Knox, 2013), and language and gestures for teaching (Fei Victor Lim, 2019). Multimodal interactive analysis is developed on the basis of media discourse analysis and absorbs some ideas from social semiotics. It focuses on how interactors use multiple symbol patterns to realize social activities and emphasizes the prominence of identity in interaction (Norris, 2004; Norris & Jones, 2005; Ron Scollon, 2001; Ron Scollon & Suzanne Wong Scollon, 2003). Corpus analysis, systemic functional linguistics and semiotics consist of the multimodal corpus analysis to verify the hypothesis of meaning generation in multimodal discourse research. Bateman (2014), on behalf of this school, believes that it is very important to pay attention to how to analyze cases in the early development of multimodal research theory. Currently, the most frequently used multimodal database tools are Anvil, Elan, etc. However, the annotation of multimodal discourse is time-consuming and laborious, which leads to the inadequate multimodal research based on the large corpora. ii. Previous Studies of Multimodality Discourse Analysis at Home In China, multimodal discourse analysis started from Social Semiotics Analysis of Multimodal Discourse (Li, 2003), which elaborated the visual grammar specifically. Following research is mainly focused on the three aspects: first, as for the research on multimodal discourse analysis based on SFL and social semiotics, a large number of scholars have devoted themselves into applying other relevant theoriesto the case studies. For example, Zhang and Mu (2012) discussed the construction of multimodal functionalstylistics theoretical framework through the analysis of graphics and articles on the basis of functional stylistics theoretical research. Feng, Zhang and Wang (2016) used the theory of rhetorical structure to the study of advertising. There are few studies on multimodal interaction analysis in China. Zhang and Wang (2016) comprehensively introduced the basic theory and method of this analysis, and discussed the characteristics and deficiencies of this method. They propose a comprehensive framework of multimodal interaction analysis and analyze the teaching activities in English classroom. Multimodal corpus analysis is still not common in China. Wang and Zhang (2016) found that the existing research methods of SFL cannot be directly applied to the description of multimodal genre featureswhich needs more improvement. Hu and Liu’s (2015) analysis of the construction of the multimodal corpusboth at home and abroad, which found out that the present research situation and focus more on modal interpretation corpus, especially from the aspects of effective collection, quality requirements, the multi- level annotation model the non-language factors (including the phenomenon of language expression and gestures), shaft alignment in time, and the perspectives of the reliability evaluation of the label. b) Previous Studies of Product Launch Conference i. Previous Studies of Product Launch Conference Abord Most researches on product launches focus on how to make effective and engaging presentations. Lucas, whose masterpiece The Art of Public Speaking is known as the “bible of Public Speaking”, explainedhow a good speech should be prepared in terms of topic selection, understanding of the audience and collection materials. The Art of Lecturing , written by Parham Aarabi, offers a practical recommendation foreffective university lectures and business presentations. In iKeynote- Representation, Rhetoric and Visual Communication by Steve Jobs In His Keynote ar Macworld 2007 , Kast (2008) elaborated how Steve Jobs interacted with resources and various modes through rhetorical devices, and delivered persuasive messages. Product launch is playing an increasingly important role in today's business environment. ii. Previous Studies of Product Launch Conference at Home At the same time, there are also some domestic research on product display. Cai and Zhou (2007) expounded the importance of speech in international business, classified it according to the purpose of product launch, and gave relevant suggestions for effective presentation. Liu (2013) conducted a further investigation of the successful speech strategy of Steve Jobs at apple, which is that in a brief introduction to the business after the classification and structure of the speech, the author discussed the features of language Steve Jobs used, and also talked about his effective skills before and in the process of the demonstration. Gao and Zhang (2015) pointed out the significant meaning of mobile phone product launch. This paper puts forward three suggestions for holding the product launch conference. The authors found that product launches can help companies become competitive, capture the taste of consumers, and be ableto prone the potential market among rivals. Volume XXIII Issue III Version I 82 ( ) Global Journal of Human Social Science - Year 2023 G © 2023 Global Journals A Study of Different Modes’ Synergy from the Perspective of Multimodal Discourse: Taking Apple Product Launch Conferences as an Example