As a second language learning is learning, realizing that there are criteria criteria. Learning processes and be able to explain the rules of the language and knowledge of the course language is therefore a formal learning.
Learning a second language Consciously learned The threshold criteria A learning process And explain the rules of the language. And have knowledge of the target language. It is learned formally.
It is to learn a second language. It is to learn consciously, which is the criteria, there is a learning process, and can explain language statutes. And have the knowledge and language learning. It is learned, officially.