Linguistic change occurs in all components of the grammar, including changes in the sound, morphological, s ______ , lexical, and semantic systems.

Please define competence and performance respectively and describe their differences.

According to John Austin, what are the three acts a speaker might be performing simultaneously while speaking? And give examples to illustrate them.

language centers

interlanguage

utterance meaning

language standardization

coinage

root

linguistic context

AUX-movement