情态动词内在与外在意义探析

The Analysis on Intrinsic Modality and Extrinsic Modality

从内外在这一对立统一方面，探讨了情态意义（内外在意义的相互转换；内外在意义的相互转换过程中产生的情态歧义；内外在意义与话语条件的关系），阐述了只有掌握情态动词及意义，根据背景合理选用，才能更礼貌、更得体地表达自己的要求、意向和建议等。

This paper analyzes the modal verbs in terms of the unity of opposites of the intrinsic and extrinsic modality(the mutual transformation of the intrinsic and extrinsic modality; the occurrence of the modal ambiguity in the course of transformation;the relationshiPS between intrinsic and extrinsic modality and the discourse conditions. This paper also indicates that English learners can express their own requirements, opinions and suggestions, etc., in a more appropriate and polite way as long as they master the modal verbs and their meanings and choose proper modal verbs according to the background.