From the sociolinguistic perspective, a speech variety is no more than a dialectal variety of a language.

The division of English into Old English, Middle English, and Modern English is nonconventional and not arbitrary.

Searle's classification of illocutionary acts is based on the classification of performative verbs.

According to the "principles-and-parameters" theory, "principles" refer to highly abstract properties of grammar which are applied to language in general and which generate phrases and at the same time restrain the power of Move a, while "parameters" allow general principles to operate in certain restricted ways, according to which particular grammars of natural languages vary.

Well-arranged sentences are considered grammatical sentences that are formed following a set of syntactic rules.

A compound is the combination of only two words.

In classifying the English consonants and vowels, the same criteria can be applied.

Linguists can concentrate on all the aspects of language at once.

We ________ go out to restaurants, but mostly we eat at home.

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.