An infinitive is the base form of a verb, usually preceded by the word to (e.g., to eat, to run, to be). Infinitives can function as nouns, adjectives, or adverbs in a sentence.
Infinitives are used:
  • After certain verbs (e.g., want, need, like)
  • After adjectives (e.g., easy, happy)
  • To express purpose (e.g., I study to learn English)
There is also a form called the bare infinitive, which is the base verb without to. This is used after modal verbs (can, will, must) and verbs of perception (see, hear).
Understanding infinitives helps with verb patterns and sentence structure in English.

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Last updated: Wed Jun 18, 2025

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