Children acquire modal particles by means of imitation, syntactic extension and pragmatic inference. Strategies of simplifying, inclination and choosing the latter are used to acquire modal particles for children. 儿童通过模仿、扩展和语用推理等手段,并运用从简策略、择尾策略和倾向性策略逐步习得语气词。
Generally, query analysis comprises several procedures such as morphological analysis, syntactic analysis, classification of query sentences, keyword extraction, and keyword extension and the like. 一般的,查询句分析需要进行词法、句法分析以及查询句分类、关键词提取与扩展等。
Question analysis includes lexical analysis, question classification, syntactic analysis, keyword selection and keyword extension. 问题理解包括:词法分析、问题分类、句法分析、关键词提取和扩展。