Like other languages Persian when written conveys meaning in sentences, each of which contains a verb, either expressed or understood. It provides what may be called the "prime mover" of the sentence; but for clarity it is supplemented by other parts of speech to indicate the subject and, where necessary, the object, as well as circumstances of time, place, and quality of the action or state described. For ease of approach the noun and its adjuncts will be considered here before the verb.