A verb that is followed by an object is called a transitive verb. Transitive verbs can be classified by the number of objects they require. Verbs that require only two arguments, a subject and a single direct object, are monotransitive.
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A verb that is followed by an object is called a transitive verb. Transitive verbs can be classified by the number of objects they require. Verbs that require only two arguments, a subject and a single direct object, are monotransitive. Verbs that require two objects, a direct object and an indirect object, are ditransitive. (Wikipedia)
Monotransitive: I bought a dog.