Simple Definition:
An infinitive is a verb form that is used to express an action or state that is not limited by time or subject. It is usually formed by adding “to” before the base form of a verb. [Base form: the simplest form of a verb, without any changes.]
Examples:
- I want to eat.
- She wanted to read.
- They will go to sleep.
Very Simple Definition:
An infinitive is a special form of a verb that starts with “to” and shows an action that can happen at any time.
Examples:
- I want to eat.
- She likes to read.
- They need to sleep.