1.SLA:atermthatrefersbothtothestuyofiniviualsangroupswhoarelearninga languagesubsequenttolearningtheirfirstoneasyoungchilren,antotheprocessof learningthatlanguage. 2.Secondlanguage:anofficiallyorsocietallyominantlanguage(notL1)neeefor eucation,employmentorotherbasicpurposes ...