V2EX to-infinitive

To-infinitive

定义 Definition

to-infinitive(带 to 的不定式):英语中由 to + 动词原形 构成的动词形式(如 to go, to see),常用来表示目的、计划/意图、结果,或在句中充当主语、宾语、表语、定语、状语等成分。也常出现在某些动词、形容词或名词之后作补足语。

发音 Pronunciation (IPA)

/tu nfntv/

例句 Examples

I want to learn English.
我想学英语。

She decided to leave early so as to avoid being stuck in traffic, even though her friends asked her to stay.
她决定早点离开以避免堵车,尽管朋友们让她留下来。

词源 Etymology

infinitive 源自拉丁语 infinitivus,意为“不限定的”,指这种动词形式不随人称和数变化。英语里常见的 to 原本是一个介词/小品词,历史上逐渐与动词原形形成固定结构,用来标记一种常见的不定式用法,因此称为 to-infinitive(区别于不带 to 的 bare infinitive)。

相关词 Related Words

文献与作品 Literary / Notable Works

  • The Cambridge Grammar of the English Language(Huddleston & Pullum)系统讨论 to-infinitive 的结构与分布
  • A Comprehensive Grammar of the English Language(Quirk et al.)详述不定式作补足语、状语等用法
  • Practical English Usage(Michael Swan)学习者常见的 to-infinitive vs. -ing 对比与错误分析
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