This paper focuses on the Arborense Differential Object Marking (dom) system, which in line with the typical Sardinian dom system marks the object noun phrases characterized by a high degree of animacy and specificity with the preposition a. This is why the Sardinian dom is also called prepositional accusative. Authors dealing with other Sardinian dialects agree in identifying three domains of distribution of the phenomenon: with personal pronouns and personal names the use of the preposition is mandatory; with inanimate common nouns it is excluded; with common nouns referring animate beings, strong variability occurs. On the basis of an oral corpus of contemporary Arborense, it can be stated that the area of mandatory use of dom is restricted in this dialect and that the optionality area turns out to be more extensive than assumed in traditional descriptions of this Sardinian phenomenon. Since all the Arborense speakers of the oral corpus are bilingual (Sardinian-Italian), the data reflect the situation of dom in a contact setting scenario where Sardinian and both Standard and Regional Italian interact. According to and , the extensive area of optionality for the use of the Sardinian dom should be the result of the influence of Standard Italian. However, two facts must be considered that make this idea questionable: first, in the language contact scenario of Modern Sardinian not only Standard Italian but also Regional Italian (with a widespread use of the dom) play a role; second, the synchronic variation observed in contemporary Arborense replicates the same variation which characterizes historical data from texts of the 12th–19th centuries.

本文着重讨论Arborense差异对象标记（dom）系统，该系统与典型的撒丁岛dom系统一致，以介词a标记具有高度亲切性和特殊性的对象名词短语。这就是为什么撒丁岛王国也被称为介词宾格。与其他撒丁岛方言打交道的作者同意确定该现象的三个分布域：对于人称代词和个人名称，必须使用介词；对于人称代词和个人名字，则必须使用介词。无生命的普通名词将其排除在外；当普通名词指代有生命的生物时，会发生强烈的变异性。根据当代Arborense的口头语料库，可以说强制使用dom的领域在该方言中受到限制，并且可选区域的范围比该撒丁岛现象的传统描述所假定的范围要广。由于所有口头语料库的Arborense讲者都是双语（撒丁岛语-意大利语），因此数据反映了撒丁岛人与标准和意大利语区域人互动的联系环境中的dom情况。据和期权的使用撒丁岛的广大地区DOM应该是标准的意大利人的影响的结果。但是，必须考虑两个事实，使这个想法令人怀疑：首先，在现代撒丁岛的语言接触场景中，不仅是标准意大利语，而且还有区域意大利语（广泛使用dom） 扮演一个角色; 第二，当代Arborense中观察到的共时性变化复制了相同的变化，该变化表征了12至19世纪文本的历史数据。