语气词是表示语气的虚词，常用在句尾或句中停顿处表示种种语气。常见的语气词有：的、了、么、呢、吧、啊。语气词：附着在词语、句子末，表示语气。
英语中没有相当于汉语语气词的词类。
Chinese modal particle has no equivalent part of speech in English.
其结论对于研究文献语言语气词的生成和演变具有理论价值。
The conclusion has great theoretical value in researching the generation and development of modal particles in the literature language.
只有在具体语境中语气词才能体现其语用意义，发挥交际功能。
Only in context could the pragmatics meaning and the communicative function of the mood word be expressed.
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