Eva Betty Simanjuntak, Amanda Daniela Naibaho, Citra Suci Ramadani, Fitri Sibarani, Rahma Puspita, Ratika Rahmi, Michael Sitorus. Analysis of Elementary School Students’ Difficulties in Mastering Basic English Sentence Structure: on To Be, Verbs, Adverbs, Nouns, Subject Pronouns and Possessive Adjectives: Penelitian. JERKIN [Internet]. 2025 Jun. 12 [cited 2026 Nov. 1];3(4):4028-31. Available from: https://jerkin.org/index.php/jerkin/article/view/988