A Review of Research on Supersegmental Acquisition in Trilingual Learners Abroad and Its Implications for Research on Supersegmental Acquisition in Trilingual Learners in China

As research into multilingual acquisition advances, phonological acquisition has become the crucial point of study. However, systematic research on suprasegmental features in trilingual acquisition remains limited. Suprasegmental features not only carry linguistic rhythm and semantic decoding roles but also significantly influence the naturalness of language production and comprehension efficiency. This paper focuses on phonological acquisition research in the field of multilingual acquisition, systematically reviewing theoretical models and methodological approaches in foreign studies on trilingual suprasegmental acquisition. It analyses cross-linguistic transfer mechanisms and influencing factors. By systematically organising international research frameworks and methodologies, this paper aims to provide theoretical frameworks and methodological insights for trilingual suprasegmental acquisition research in China, thereby promoting the development of related research in the country.