On the Change of the Values of Modal Operators and its Significance
XIAO Tangjin
The value of modal operators is prescriptive in the view of traditional grammar,and no systematic theory has been proposed about the change of the value of modal operators although it has been noted by modern schools of linguistics.This paper attempts to show that the change of the value of modal operators is a device of meaning potentials through their employment in political speech and persuasive speech and that it causes inter-generic as well as intra-generic variations,a feature of meaning as a system of options.
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