Modals and modality in English

Modality is a semantic concept dealing with necessity and possibility of the knowledge of the world. It is basically divided into two types, viz. epistemic modality and deontic modality. Various grammatical categories are possibly used to show modality. However, modal verbs are one of the most important means related to the modality. Modal verbs are flexible in showing modality. This article discusses
basic knowledge of modality including definition, classification (epistemic and deontic) and relationship
between modality and modal verbs