This study examines the syntactic forms, semantic meanings, and illocutionary functions of English interrogative sentences in audiovisual media, with particular attention to the alignment or mismatch between form and function. Employing a qualitative descriptive design, data were drawn from three media sources: a documentary (The Social Dilemma), a talk show (The Ellen Show), and a vlog (MrBeast YouTube channel), yielding 30 interrogative sentences for analysis. The findings reveal five syntactic types: yes/no questions (23.3%), wh-questions (23.3%), tag questions (16.7%), declarative questions (20.0%), and echo questions (16.7%). Five illocutionary functions were identified: information-seeking, confirmation-seeking, rhetorical, directive, and expressive, each representing 20% of the sample. Notably, 70% of interrogatives exhibited form-function mismatch, with declarative questions showing complete mismatch (100%), as they retain declarative word order but function as questions through rising intonation. Media context significantly influenced interrogative use: documentaries favored canonical forms and alignment (60%), while talk shows and vlogs exhibited higher mismatch (60-70%) due to their spontaneous, interactive nature. The study demonstrates that syntactic form alone cannot reliably predict pragmatic function in real discourse, supporting the view that function often overrides conventional form. These findings contribute to the syntax-semantics-pragmatics interface, media discourse analysis, and audiovisual translation, with implications for language pedagogy through authentic materials integration.