在世界各地的不同国家，英语作为母语被习得；在其他地方，它被用作第二语言。
In different countries around the globe, English is acquired as the mother tongue; in others it is used as a second language.
什么时候会习得第二语言？
语言迁移一直是应用语言学、第二语言习得和语言教学领域有争议的论题。
Language transfer has long been a controversial topic in applied linguistics, second language acquisition, and language teaching for many years.
应用推荐