ABSTRACT
No auxiliary verb is required in Persian for negation. The prefix na- is used to make verbs negative. Persian has of course transitive and intransitive verbs, as well as some linking verbs. Sometimes a verb can be both, as it happens in English too. This is something that should be learned with each verb. A transitive verb always needs at least one object, although sometimes there can be two; it can have a direct or an indirect object or both. An indirect object is very easy to recognize in Persian: it is always preceded by a preposition. In the course of its simplification, Modern Persian has been moving away from simple, irregular verbs. The two main strategies have been: using compound verbs formed by only a few verbs and making regular verbs out of irregular ones. The past participle is the only derivative that has a function in formation of certain verb forms.
