There can be up to five different forms of verbs, usually referred to as V1, V2, V3, V4 and V5. Verbs are simply words that express action or a certain state of being.
V1 (Base form, or Infinitive) is the easiest out of all. The base form is simply the root form of the verb used mostly as an infinitive. Root forms of verbs do not include any prefixes or suffixes. The root form of the verb is used to create other forms of the same verb. This may not be applied to english irregular verbs, though.
An infinitive verb is the base form of a verb with the word “to” in front of it. “to” is a part of the verb, it is not a preposition in this case.
- to be
- to see
- to take
- to have
- to learn
An infinitive verb is never conjugated.
The base form is just the verb, without the “to.”