A verb is an action word which may be transitive or intransitive.

  • A transitive verb requires a direct object
  • An intransitive verb does not require it
Transitive Intransitive
The car hit a wall. The car ran smoothly.
Kevin wrote a letter. He wrote well.

Verbs must always agree with its subject in terms of tense and quantity

Type Past Past Perfect Present Present Perfect Future Future Perfect
Simple I began I had begun I begin I have begun I will begin I will have begun
Progressive I was beginning I had been beginning I am beginning I have been beginning I will be beginning I will have been beginning
Single Subject - Single Verb Plural Subject - Plural Verb
He is here. They are here.