The different ways to form infinitives in English.
Infinitives are generally made like this:
to + VERB
Sometimes they are used with out "to". Infinitives are verbs, and so they come in many forms:
How to make an infinitive and what infinitives are used for.
The infinitive is a form of the verb, usually used with "to". Sometimes an infinitive does not use "to" (that's why "to" is in brackets below). Infinitives look like this: