“语境是语言赖以生存、运用和发展的环境,它制约着语言,决定着语言的命运。”①语境不是虚无飘渺的,它可以分解为若干个具体的构成因素,诸如题旨、上下文、时间、场合、对象、自然环境、社会背景、文化心态等等。人们在实际语言运用中,自觉不自觉地受着语境的制约,或者说自觉不自觉地适 “Context is the environment in which the language depends on its survival, utilization and development. It restricts the language and determines the fate of the language.” ① The context is not empty, it can be decomposed into a number of specific components, such as the subject , Context, time, occasion, object, natural environment, social background, cultural mentality and so on. People in the actual use of language, consciously or unconsciously subject to the constraints of context, or unconsciously appropriate