法语的祈使语气、虚拟语气、指示语气和条件语气是曲折变化的。
French has inflectionally distinct imperative, subjunctive, indicative and conditional mood forms.
一个只有句号的的世界是一个失却了曲折变化的世界，一个失却了联想的世界。
A world that has only periods is a world without inflections. It is a world without shade.
普遍是因为英语是典型的具有曲折变化的语言，动词添加后缀或者零后缀可实现为名词。
The popularity lies in the fact that English is a typical language undergoing inflectional changes. The addition of suffix realizes the transformation of verbs into nouns.
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