As can be seen in the above table (which uses the verbs ‘study’ and ‘eat’ as examples), a particular verb may have more or less variation in how these seven forms are represented. A brief explanation of each of the seven verb forms is therefore provided for students below:
(1) Base form: the default, uninflected form of a verb – most commonly used when expressing the present tense and simple aspect
(2) Third-person present: a verb form that most commonly uses the ‘-s’ suffix to show agreement between third-person subjects (such as ‘he/she/it’) and the lexical verb
(3) Infinitive: a non-finite verb form that cannot be inflected for tense, agreement, etc.
(4) Past tense: an inflected verb form used to demonstrate past tense, often with the suffix ‘-ed’
(5) Past participle: an inflected verb form used to demonstrate the perfect aspect or passive voice
(6) Present participle: an inflected verb form used to demonstrate the progressive aspect
(7) Gerund: a nominalised verb form using the ‘-ing’ suffix which may be a subject or object
In addition to recognising these seven verb forms, a student who wishes to correctly identify verbs should probably also watch out for the following list of common verb-forming prefixes and suffixes: