Conditionals, factives and the left periphery

In this paper, I discuss the relevance of the decomposition of CP for the syntax of adverbial clauses. I will show that conjunctions introducing adverbial clauses, such as if, while and since, may select a reduced CP, in which case such clauses lack main clause phenomena (MCP), or the conjunctions may select a full fledged CP, in which case the adverbial clauses are compatible with MCP. In the second part of the paper, I will argue that complements of factive predicates can also be shown to instantiate the reduced structures.