长期以来,语言习得领域主要关注一语和二语习得的研究,而对三语或多语习得的研究却相对匮乏。究基因,可能是很多学者认为三语或多语习得与二语习得没有本质区别。然而,对三语或多语研究的缺乏 For a long time, the field of language acquisition mainly focuses on the study of one term and second language acquisition, while the study on the acquisition of three or more languages ​​is relatively scarce. Genes may be that many scholars believe that there is no essential difference between the acquisition of third language or multilingual and second language acquisition. However, there is a lack of research on trilingual or multilingualism