to what extent is learning a second language like learning a first language? what can we learn from first language development with respect to the contents and methods of second language courses?
the marvelous capacity for acquiring competence in one's native language within the first few years of life has been a subject of interest for a very long time. linguists, psychologist, and even language teachers have paid their attentions to the first language learning and have attempted to draw analogies between first and second language acquisition in order to justify certain teaching methods and techniques and contents of second language on the basis of first language learning principles.