...为三层:冷冻体和正式体归为正式体(formal style)、商谈体为中性体(neutral style)、熟稔体和亲昵体合为非正式体(informal style)。不管是五个层面还是三个层面，Martin事实上将语言分成了不同的语域。
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英文的语体基本分为正式体和非正式体，详细点还可划分成演说体、正式体、商议体、随意体和亲昵体五种。
Basically speaking, we have formal and informal style in English, which can be divided into five groups: Frozen, formal, Consultative, Casual and Intimate.
第二章分析英语口语体与书面体的差异，并进一步把口语从其正式程度上分为正式体与非正式体，探讨听力理解的性质及其外语学习者所面临的困难。
Chapter Two analyses the differences between spoken and written language, classifies speech into formal and informal varieties, and probes into the nature and difficulties in listening comprehension.
但是在墨西哥，哥伦比亚，非正式经济体的份额仍然在增长。
But in Mexico and Colombia the share of the informal economy may still be growing.
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