______movesonascaleofthenationallanguage,dialects,andindividualwaysofcommunication.
A、LanguagechangeC
言語的變異總是以國語、方言以及不同的個體交際語言等形式來進行。從社會語言學的角度來看，一種言語變體無非是一種語言的方言變體而已。
Thebasicunitinthestudyofmorphologyis______.
Searle'sclassificationofillocutionaryactsisbasedontheclassificationofperformativeverbs.
______ of a sentence depends on the context in which the sentence is uttered.
The basic unit in the study of morphology is ______.
If you are walking away from a clock tower ，you will hear the ticking of the clock fade to a point ________ it cannot be heard.
