5 Parts of English Verbs


English verbs have 5 principal parts with which other forms are derived using verb auxiliaries: base/stem, simple past/present, past participle, present participle and the infinitive (the “name” of the verb). Some also include the third person singular in the present tense as a principle part, as it is the only verb form that kept its inflectional ending in Modern English.

Grammatical term Symbol Regular Verb Irregular Verb
Infinitive to + V1 to watch to see
Base Form /
V1 watch see
Present Simple third person singular V1+s watches sees
Past Simple /
V2 watched saw
Past Participle V3 watched seen
Present Participle Ving watching seeing