Chapter I Introduction Describing and Explaining L2 Acquisition1.1What is second language acquisition?Second language refers to any language that is learned subsequent to the mother tongue.1.2What are the goals of second language?The goals of SLA are to describe how L2 acquisition proceeds and to explain this process and why some learners seem to be better at it than others. 1.3Two case studies of L2 learners1.3.1 A case study of an adult learner1.3.2 A case study of two child lear
