根据rod ellis, second language acquisition 和L2 acquisition 之间的区别

根据自己的观念，为提高英语学习效果而采取的行动Rod Ellis “The study of second language acquisition” (四) 策略的特点观念与方法之间的关系 英语

这是二语习得的英文定义：Second language acquisition, or SLA, is the processes by which people learn languages in addition to their native tongue(s). Just as second language is the standard term for any language whose acquisition starts after early childhood, including what is chronologically the third or subsequent language, SLA is the acquisition of any second language. The language to be learned is often referred to as the "target language" or "L2" (and SLA is often called L2A, for "L2 acquisition").