Clitics are not enough: on agreement and null subjects in Brazilian Venetan

This paper presents some facts about the syntax of subject pronouns in contact. We investigate agreement and EPP-checking in Brazilian Venetan, a heritage northern Italo-Romance variety spoken in southern Brazil in contact with Brazilian Portuguese. Central Venetan, the northern Italo-Romance variety that constitutes the basis of Brazilian Venetan, is a null-subject language presenting agreement-like subject clitics; Brazilian Portuguese is a partial pro-drop language, in which null subjects are allowed only in precise syntactic conditions and it is developing reduced pronominal subjects. We will address two changes we detected in Brazilian Venetan with respect to the syntax of subject pronouns: the non-contrastive realisation of the first person singular tonic pronoun, and the change in the syntax of subject clitics, which seem to be used as weak pronouns rather than agreement items. We will claim that the first change has to be connected to the simplification of interface conditions between syntax and discourse, a pattern which is commonly attested in bilingual speakers, while the second can be quite safely ascribed to the contact with a partially overlapping structure, namely the reduced pronominal subjects in spoken Brazilian Portuguese. We analyse the two phenomena, trying to find possible links between them in order to develop an analysis of subject clitics in contact and the conditions in which we may most probably find an effect of contact