A Review of Studies on the Impact of Code-Switching on Second Language Acquisition

Abstract

With the development of globalization, the number of second-language and multilingual learners has increased, and the phenomenon of code-switching has become common. As a complex linguistic phenomenon, code-switching is one of the important research topics in sociolinguistics, and it is also of great significance for second language acquisition. Therefore, this paper reviews the impact of code-switching on second language acquisition and its related research and development. It also summarizes the classification, frequency, and causes of code-switching. The results show that appropriate code-switching has a positive impact on second language acquisition, and at the same time, this paper also proposes some countermeasures to improve the problem of inappropriate code-switching in second language acquisition. From the learner’s point of view, it is necessary to correctly understand code-switching, its practical significance, and its necessity. However, learners should avoid too much dependence; from the teacher’s point of view, it is important to use code-switching in strict accordance with the teaching requirements and, at the same time, use the mother tongue to ensure that students understand; it is also necessary to create a good foreign language learning atmosphere for students and exercise students’ foreign language learning ability.