Second language acquisition focuses on how people learn a new language after acquiring their first language. Key theories include Universal Grammar, which proposes that humans are biologically predisposed to learn language through an innate language acquisition device, and Monitor Theory, which examines how learners monitor their own speech and writing.

1. SECOND LANGUAGE ACQUISITION
Jesus Guerrero Perez

2. 
Second language acquisition researches and
focuses on the developing knowledge and
use of a language by children and adults who
already know at least one other language.

3.  Theories of learning
 Linguistic perspectives Universal Grammar
Monitor Theory

4.  Universal Grammar Originated with
Chomsky’s (1968) view on first language.
According to Chomsky every human being is
biologically endowed with a language faculty,
the language acquisition device, which is
responsible for the initial state of language
development.