They are Halliday s cohesion theory,Grice s theory of Conversational implicature and Searle s theory of indirect speech act.

Indirect use of language has lent itself to considerable discussion in the indirect speech act theory, though limited to cross-sentential multifunctionality under the name of indirectness.

This paper analyzes the four factors of the use of indirect language in a joke from the pragmatic point of view: context,rhetoric,the reader s background knowledge and logical reasoning ability.

In one of his later works La prose du monde, Merleau-Ponty also focuses on the creation of new meanings and the expression-moment of indirect language.

Indirect speech,the inconsistency between sentence meanings and utterance meanings,can be categorized into two typical types: metaphor and indirect speech act.

Based on Grice s conversational principle,this paper explores the causes of the phenomenon of indirect speech by analyzing language forms and functions,the literal and actual meanings of words,speech act as well as conversational implicature.

The present paper addresses the syllable’s role in language production.

The study of this kind of speech errors lies in the domain of psycholinguistics, with the aim of discovering the mechanism of language production, including mental representation and mental process.

This paper mainly introduced two theories about the mechanism of lexical access in bilingual speech production: language-unspecific selection theory and language-specific selection theory.

The study of speech production is a challenging question in language research.

It tended to support the interactive activation theory on speech production, and the results verified the assumption of the research.