Advanced learners use a significant number and variety of lexical phrases while intermediate learners ' lexical phrase use lacks variety and beginners tend to build sentences by grammatical rules , thus resulting in unidiomatic and slow oral production 初級學習者比其他兩組使用的短語少得多,并且傾向于用語法規(guī)則來構造句子,其語言缺少流利度和地道性。