First form

First form is one of the two names (the other being basic form) suggested by Michael Lewis in The English Verb for that form of the verb used for the bare infinitive, the Imperative and all forms of the Present Simple of lexical verbs (also known as full verbs) except the third person form, which adds -(e)s. In the tables of principal parts of verbs traditionally learnt by students - go - went- gone, for example, the form listed first is the first form.