二語習得

簡介

二語是指除母語外的第二種語言，二語習得(SLA)就是習得除母語外的第二種語言。
The acquisition of a foreign or subsequent language (a third or fourth language).

例子

SLAis primarily the study of how learners acquire or learn an additional language after they have acquired their first language (L1).
SLA researchers are particularly interested in the causes of the difficulties that adult learners encounter and the methods that may be used to facilitate the acquisition of a second language