IT provides the basic design
for all human languages, and
individual languages are simply
variations on this basic design.
All languages have phrase structure rules already established,
but languages may have different word orders within the
phrases and sentences. Therefore, is the word order which helps to
difference two languages. For instance; English is head initial,
Japanese is head final. Nevertheless, each language defines for
itself the relative word order.
Those points of variation are called parameters.
All languages have expressions for requesting information about who,
when, where, what, and how. However, there are some differences among
them; For example: In the Romance languages, such as Italian, the wh
phrase moves as in English, but when the wh phrase questions the
object of a preposition, the preposition must move together with the wh
phrase. In English, by contrast, the preposition can be “stranded"
A chi hai dato il libro? To whom (did) you give the book?
Chi hai dato il libro a? Who(m) did you give the book to?
These aspects of grammar need not be learned. They
are part of the innate blueprint for language that the
child brings to the task of acquiring a language. What
children must learn are the languagespecific aspects of
grammar.