Haris, H. and Rani, A.R. 2025. GRAMMATICAL AND MECHANICAL ERRORS IN STUDENTS’ ENGLISH WRITING AT UNIVERSITAS PAHLAWAN TUANKU TAMBUSAI. TOFEDU: The Future of Education Journal. 4, 7 (Aug. 2025), 2983–2989. DOI:https://doi.org/10.61445/tofedu.v4i7.950.