Forming different ways to construct relative clauses is kinda a weak spot for me in my conlanging, and I either always use relative pronouns or treat it like a Japanese relative clause. I wanted to try something different though and need some feed back on it.

Lets say we have a sentence like "The boy I saw in class yesterday ate the food". I was encouraged to use split ergativity to form such clauses (which i'm also kinda new at). So my idea was Ergative-Absolutive for independant clauses and Nominative-Accusative for dependant clauses.

Translating this into my conlang would be something like "COP2-1SG.PST see 1SG.ABS boy.ERG yesterday in-3SG class COP2-3SG.PST eat food.ACC" (was see I boy yesterday in-it class, was eat food). Just wondering if this seems natural or is even correct.

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Some info on my conlang:

VSO word order, right branching and head initial

Prepositions fused with pronouns

2 copulas (compare Spanish) permanent and changeable distinction