The appearance of special markers for complex sentences follows a certain order and law.This paper mainly discusses five implicative relations in the diachronic development of"hypothesis-condition"subordinating conjunctions.They are:1)condition conjuntion & hypothesis conjuntion;2)counterfactual hypothesis conjuntion &general hypothesis conjuntion;3)very-low-probability hypothesis conjuntion& general hypothesis conjuntion;4)necessary/excluded/unconditional condition conjuntion &sufficient condition conjuntion;5)suppositional concession conjuntion & hypothesis conjuntion.This article holds that the above implication relations all reflect the same evolution law:cognitively complex"hypothetical-conditional"markers(∩)cognitively simple"hypothetical-conditional"markers.
Hypothetical-conditional ConjuntionSubordinate ConjunctionsEvolution Law
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