摘要
This paper focuses on generalizing different theories towards the age effect on the ultimate attainment of second language learners since it has long been a controversial topic in researchers’mind.In this paper,it gives evidences on cases in favor of the Critical Period Hypothesis,which claimed the loss of language learning ability after puberty and presents counter-evidences on the successful acquisition of second language in adult learners.It has reached into a conclusion that consists the viewpoint drawn on previous analysis and confirmed the possibility in ultimate second language attainment for late learners.
