instructional class

例句：

1. 1. Theinstructor was very helpful in explaining the complexconcepts.
   这位教师在解释复杂概念时非常有帮助。
2. 2. The textbook is a great resourcefor learning English.
   这本教科书是学习英语的好资源。
3. 3. The teacher used various instructionalmethods to engage the students.
   老师采用了各种教学方法来吸引学生。