Phonetics

Social changes can often bring about language changes.

Syntax is different from morphology in that the former not only studies the morphemes, but also the combination of morphemes into words and words into sentences.

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

Linguistics is generally defined as the s（）study of language.

Language

Phonetics is different from phonology in that the latter studies the combinations of the sounds to convey meaning in communication.

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.

Langue refers to the a（）linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.

Phonology