1. An apparatus for language expression based on context and intent awareness, the apparatus comprising: a context recognizing unit configured to recognize a context of a user by analyzing sensing information collected from the user's environment; an intent recognizing unit configured to recognize an intent of the user based on the recognized context; a language generating unit configured to generate a language expression based on the recognized context and the recognized intent and refine the substance of the language expression based upon information gathered from a source independent of the sensing information; and an output unit configured to convert the refined language expression into a language that is understandable to the user, and to output the converted language expression.