The Vietnamese phrase "hỏi bài" can be translated to "ask questions about a lesson" in English. It is commonly used in educational contexts, particularly by teachers when they want to check students' understanding of previous material before introducing new topics.
While "hỏi bài" mainly pertains to educational contexts, "hỏi" alone means "to ask" and "bài" can refer to various things like "article," "essay," or "piece of writing" in different contexts. However, when combined as "hỏi bài," the educational meaning is emphasized.