3、Coherence, derivable from relevance, is divided into two kinds: the coherence of propositional content and the coherence of contextual effect.
2、Discourse relevance determines two types of conversational discourse coherence: propositional content coherence and contextual effect coherence.
4、On this basis, this paper makes a study of the aspectual meaning indicated respectively by the progressive form of the verb and by the propositional content.
1、A propositional content can have different focuses of sentence.
