The Beginning Stages of a Perfective Aspect Marker Development in a Period of New Persian: An Approach from Current Linguistic Atlas to the Historical Atlas

The article tries to make a link between grammatical function of the prefix be- with past verbs in the current atlas of New West Iranian and the historical atlas of New Persian, and to interpret this marker’s historical statistics with respect to its behavior in today’s Iranian varieties. In the historical sampling of this research, 22% of past verbs of simple morphological structure (non-prefixed and non-complex) in 4^th to 7^th centuries had the prefix be-, but in the following centuries, its frequency decreased gradually, and eventually it disappeared. On the other hand, in the contemporary century, a very high level of grammaticalization of be- in the same position is observed in a wide variety of Iranian languages and dialects. The author looks at these two phenomena (the historical behavior of be- and its today’s behavior) in the same line, and believes that there has been a single path of grammaticalization of be- in progress in New West Iranian languages, but the written/standard variety of New Persian stopped this process for some external or internal reasons (contact with varieties without be-, and development of mi- as imperfective marker, respectively), while the process continued in some Iranian varieties to the current level.
 
1. Introduction
This paper attempts to make a link between the grammatical function of the prefix be- with past tense verbs in the current atlas of New West Iranian and the historical atlas of New Persian, and to interpret the marker’s statistical behavior in old texts with respect to its behavior in today’s Iranian varieties. The issue of the grammatical function of be- in this position has always been controversial, and grammarians and linguists have proposed functions such as decorative, redundant, emphatic, and perfective aspect for it. With a statistical approach, this research is concerned with this controversial issue, considering the status of perfective aspect marker in the current linguistic atlas (of West Iranian varieties), suggesting the hypothesis that the grammaticalization of be- as the perfective aspect marker had begun in some regions in the historical linguistic atlas.
 
2. Theoretical Framework
A common phenomenon in grammars is the grammaticalization of the speaker’s viewpoint towards the event: seeing it as a whole completed event, or looking from inside as an uncompleted one. This opposition, called perfective and imperfective aspect, respectively, is the main distinction in the grammatical aspect domain. In simpler words, the grammatical category of aspect is the result of grammaticalization of the speaker’s viewpoint. In this domain, there may be a grammaticalized morpheme for each opposition (perfective and imperfective); or just marking one the oppositions overtly, with no marker for the other one.
 
3. Methodology
The historical corpus of this research includes 77 thousand verbs, extracted from 55 texts from 10^th to 20^th centuries. To this aim, five texts from each century were selected, and then, two pieces of each text were taken randomly as the sampled data, each one including 700 verbs (1400 verbs from each text, altogether).
 
4. Results & Discussion
According to the statistics, be- in the grammatical function under discussion generally appears with positive verbs of simple structure (non-prefixed and non-complex), and its highest rate of usage is in 10^th and 11^th centuries. In these two centuries, on average, out of every four simple verbs in perfective aspect, one verb (and a bit more) takes be- (26.7%). In 12^th and 13^th centuries, the frequency of be- shows decrease (19%), and then, in the 14^th, the statistics is reduced to less than half (8.1%), gradually disappearing in the following centuries. Furthermore, in 10^th to 13^th centuries, there are 17 texts from various geographical regions, having a rate higher than 10%, which shows that be- was being used in all centers of text production in the cultural territory of Persian. Also, the number of verbs with be- in the whole period (142 verbs, non-repeatedly) shows its high productivity, hence its inflectional nature, rejecting the derivational function hypothesis.
On the other side, according to several researches in dialectology, a very high level of grammaticalization of be- in the same position has been reported in a wide range of Iranian varieties. At least in Mazandarani, Gilaki, Tati, Khorasani, Central Iranian, and Talishi, there are several language varieties with this marker in the same position, and in many of them, be- is nearly fully-productive with simple verbs. Furthermore, complex predicates and some past forms (present perfect, past perfect, and past subjunctive) are used with be- in some Iranian varieties.
If we suppose that in early centuries the grammaticalization process of be- was in progress in some regions of the geography of Iranian languages, then, it may be hypothesized that since 14^th century the production of Persian texts and the standardization of written language was affected by the varieties which lacked this function of be-, and this function was stopped gradually, but the varieties which had the marker (previously having more influence on the production of Persian texts) continued grammaticalizing itto the current level. By contrast, if we suppose that the grammaticalization of be- was only going on in New Persian, and after being stopped, it started again in some regions of the geography of Iranian languages, then, firstly, it would be difficult to account for the relatively short time spent for such a high level of grammaticalization of be- in today’s varieties, and secondly, on this assumption, the connection between perfective function and subjunctive-imperative function would be broken off, and restarting grammaticalization for perfective aspect would require theoretical justification.
The author believes that it is more plausible to consider the grammaticalization of be- in the grammars of West Iranian languages as a single phenomenon. In other words, there has been a single path of grammaticalization of be- (for perfective aspect) in progress in New West Iranian languages which was gradually stopped in New Persian since 14^th century, and was continued in some Iranian varieties. The consequence of such an integrated approach to the phenomenon will be that we can also consider be- in Classical Persian as a perfective marker.
 
5. Conclusions & Suggestions
The statistics of this research show that 22% of simple perfective verbs in 10^th to 13^th centuries had be-. On the other hand, now, a very high level of grammaticalization of be- in the same position is observed in a wide range of Iranian varieties. The author believes that the most plausible explanation for these two linguistic phenomena (historical behavior of be- and its today’s behavior) is that the grammaticalization of be- for perfective aspect marking began since Early New Persian period (or possibly even Middle period), but Persian stopped this process gradually for some external reasons (contact with varieties without be-) or internal reasons (establishment of mi- as imperfective marker), while the process continued in some Iranian varieties to the current level. 
 
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