Linguistics

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.

Morphology

Phonetics

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

Morphology studies how words can be formed to produce meaningful sentences.

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

The discipline that studies the rules governing the formation of words into permissible sentences in languages is called s（）

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