Human capacity for language has a g（）basis, but the details of language have to be taught and learned.

Language is a system of a（）vocal symbols used for human communication.

In the study of linguistics, hypotheses formed should be based on language facts and checked against the observed facts.

The distinction between competence and performance was proposed by F. de Saussure.

Phonology

Phonetics

Chomsky defines “competence” as the ideal user’s k（）of the rules of his language.

Language is p（）in that it makes possible the construction and interpretation of new signals by its users. In other words, they can produce and understand an infinitely large number of sentences which they have never heard before.

The study of the ways in which morphemes can be combined to form words is called morphology.

General linguistics, which relates itself to the research of other areas, studies the basic concepts, theories, descriptions, models and methods applicable in any linguistic study.