英和和英

名詞

relevance conditional (plural relevance conditionals)

1. (logic, grammar) A subordinate clause, usually introduced by if, that asserts the relevance of the clause to the main clause of the sentence, but not that it entails the main clause; a construction involving such a clause.
   • 2001, Renaat Declerck, Susan Reed, Conditionals: A Comprehensive Empirical Analysis‎, page 425:

     To be more precise, the speaker of a relevance conditional assumes a mutual understanding on the parts of the speaker and the addressee[s] that the actualization of P is a sufficient condition for the relevance of the Q-utterance.

   • 2013, Tatjana Scheffler, Two-dimensional Semantics: Clausal Adjuncts and Complements, Walter de Gruyter, page 124:

     For example, relevance conditionals are constructions in conditional shape that do not seem to express a clear conditional meaning at first glance. This has led semanticists to introduce analyses of relevance conditionals that capture many of their properties but are very specific to this construction.

   • 2016, Stephen Finlay, Confusion of Tongues: A Theory of Normative Language, Oxford University Press, page 71:

     A known grammatical marker of relevance conditionals is their resistance to linking their antecedent and consequent clauses with 'then': consider the mild oddity of 'If you want biscuits then there are some on the table.' […] This peculiarity of relevance conditionals is straightforwardly explained by the ellipsis theory, according to which the consequent clause doesn't in general express a real (logical) consequent; 'There are some biscuits on the table' is just asserted as true.

参考

• material conditional

Further reading

• Relevance logic on Wikipedia.Wikipedia