|Transitivity and valency|
|Reflexives and reciprocals|
A transitive verb is a verb that accepts one or more objects. This contrasts with intransitive verbs, which do not have objects. Transitivity is traditionally thought a global property of a clause, by which activity is transferred from an agent to a patient.
Transitive verbs can be classified by the number of objects they require. Verbs that accept only two arguments, a subject and a single direct object, are monotransitive. Verbs that accept two objects, a direct object and an indirect object, are ditransitive, or less commonly bitransitive. An example of a ditransitive verb in English is the verb to give, which may feature a subject, an indirect object, and a direct object: John gave Mary the book.
Verbs that take three objects are tritransitive. In English a tritransitive verb features an indirect object, a direct object, and a prepositional phrase – as in I'll trade you this bicycle for your binoculars – or else a clause that behaves like an argument – as in I bet you a pound that he has forgotten. Not all descriptive grammars recognize tritransitive verbs.
A clause with a prepositional phrase that expresses a meaning similar to that usually expressed by an object may be called pseudo-transitive. For example, the Indonesian sentences Dia masuk sekolah ("He attended school") and Dia masuk ke sekolah ("He went into the school") have the same verb (masuk "enter"), but the first sentence has a direct object while the second has a prepositional phrase in its place. A clause with a direct object plus a prepositional phrase may be called pseudo-ditransitive, as in the Lakhota sentence Haŋpíkčeka kiŋ lená wé-čage ("I made those moccasins for him"). Such constructions are sometimes called complex transitive. The category of complex transitives includes not only prepositional phrases but also dependent clauses, appositives, and other structures. There is some controversy regarding complex transitives and tritransitives; linguists disagree on the nature of the structures.
In contrast to transitive verbs, some verbs take zero objects. Verbs that do not require an object are called intransitive verbs. An example in English is the verb to swim.
Verbs that can be used in an intransitive or transitive way are called ambitransitive verbs. In English, an example is the verb to eat; the sentences You eat (with an intransitive form) and You eat apples (a transitive form that has apples as the object) are both grammatical.
The concept of valency is related to transitivity. The valency of a verb considers all the arguments the verb takes, including both the subject and all of the objects. In contrast to valency, the transitivity of a verb only considers the objects. Subcategorization is roughly synonymous with valency, though they come from different theoretical traditions.
Transitive phrases, i.e. phrases containing transitive verbs, were first recognized by the stoics and from the Peripatetic school, but they probably referred to the whole phrase containing the transitive verb, not just to the verb. The advancements of the stoics were later developed by the philologists of the Alexandrian school.
Traditionally, transitivity patterns are thought of as lexical information of the verb, but recent research in construction grammar and related theories has argued that transitivity is a grammatical rather than a lexical property, since the same verb very often appears with different transitivity in different contexts. Consider:
The following sentences exemplify transitive verbs in English.
However, the definition of transitive verbs as those with one object is not universal, and is not used in grammars of many languages.
Hungarian is sometimes misunderstood to have transitive and intransitive conjugation for all verbs. The concept of transitive, intransitive is misplaced here.
In present and future, there is a lesser used variant – a definite, or say emphatic conjugation form. It is used only when referring to a previous sentence, or topic, where the object was already mentioned. Logically the definite article a(z) as reference is used here—and due to verb emphasis (definite), word order changes to VO.
In English one would say 'I do see the house', etc., stressing the verb – in Hungarian, the object is emphasized – but both mean exactly the same thing.
In the language of Pingelap, Pingelapese, transitive verbs are used in one of four of their most common sentence structures. Transitive verbs according to this language have two main characteristics. These characteristics are action verbs and the sentence must contain a direct object. To elaborate, an action verb is a verb that has a physical action associated to its meaning. The sentence must contain a direct object meaning there must be a recipient of said verb. Two entities must be involved when using a transitive sentence. There is also a fixed word order associated with transitive sentences: subject-transitive verb-object. For example:
Linda (Subject) e aesae(transitive verb) Adino (object) This sentence translates to, Linda knows Adino.
The definition of transitive verbs as those with one object is not used in grammars of many languages. For example, it is generally accepted in Polish grammar    that transitive verbs are those that:
Both conditions are fulfilled in many instances of transitive verbs:
Maria widzi Jana (Mary sees John; Jana is the accusative form of Jan)
Jan jest widziany przez Marię (John is seen by Mary)
We distinguish two types of transitive clauses: those including only [a subject–direct object] pair are monotransitive; clauses containing [subject, direct object, and indirect object] are ditransitive.