46. During a writing unit, an SEI teacher has been teaching grammar and usage (e.g., lessons on verb tenses, prepositions, phrasal verbs, gerunds versus infinitives) to a group of English learners. The teacher notices that one student consistently avoids using a particular grammatical structure that has been taught, even when specifically asked to include it in brief writing tasks. In responding to this situation, the SEI teacher should carry out which of the following actions first?