A verbal is a word used simultaneously as a verb and another part of speech. The details of use vary from language to language, but typically a verbal can take adverbs and certain kinds of verb arguments, producing a verbal phrase which then plays a different role — usually noun, adjective, or adverb — in a greater clause.
English has three kinds of verbals: participles, which function as adjectives; gerunds, which function as nouns; and infinitives, which function as nouns, adjectives, or adverbs. Each of these is also used in various common constructs; for example, the past participle is used in forming the perfect aspect (to have done).
Other kinds of verbals, such as supines and gerundives, exist in other languages.
A participle is a verbal adjective that describes a noun as being a participant in the action of the verb. English has two kinds of participles: a present participle, also called an imperfect participle, which ends in -ing and which ordinarily describes the agent of an action, and a past participle, also called a perfect participle, which typically ends in -ed (but can also end in -en, -t, or none of these), and which ordinarily describes the patient of an action.
The following sentences contain participles:
In English, the present participle is used in forming the continuous aspect (to be doing); the past participle is used in forming the passive voice (to be done) and the perfect aspect (to have done).
A participial phrase is a phrase consisting of a participle and any adverbials and/or arguments; the participle is the head of such a phrase:
For use of participles in languages besides English, go to the main article.
A gerund is a verbal noun that refers to the action of the verb. In English, a gerund has the same form as a present participle (see above), ending in -ing:
A gerund phrase is a phrase consisting of a gerund and any adverbials and/or arguments; the gerund is the head of such a phrase:
An infinitive phrase consists of an infinitive and any related words.
For use of infinitives in languages besides English, go to the main article.