Syntax

D（）is one of the design features of human language which refers to the phenomenon that language consists of two levels: a lower level of meaningless individual sounds and a higher level of meaningful units.

Social changes can often bring about language changes.

Modern linguistics is different from traditional grammar.

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.

Morphology

Phonology

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.

Modern linguistics regards the written language as primary, not the written language.

A scientific study of language is based on what the linguist thinks.