The infinitive is the base form of a verb. Examples are: write, run, break, read, walk etc.
The infinitive may be preceded by the marker to. It is then called the to-infinitive.
Examples of to-infinitives are given below:
- I want to go.
- Birds love to sing.
- To err is human.
- He refused to go.
- To err is human; to forgive divine.
- To find fault with others is easy.
- He wants to go.
- She likes to sing.
- The mistake she made was to get his attention.
- The best thing to do now is to retreat.
- That was a place to visit.
- It is time to go.
The forms of the infinitive
The infinitive has the following forms:
Active: to write; passive: to be written
Active: to have written; passive: to have been writen
Active: to be writing; no passive form
Present perfect continuous
Active: to have been writing; no passive form