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

A diachronic study of language is the description of language at some point in time.

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

Pragmatics is different from semantics in that pragmatics studies meaning not in isolation, but in context.

Social changes can often bring about language changes.

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

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.

Modern linguistics is mostly prescriptive, but sometimes descriptive.

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.

Pragmatics