homeroom
n. <美>年级大教室，主教室（课前集合用的教室）
例句
Oct. 24, 8:15 A.M. I'm sitting in homeroom and I'm the first person here.
10月24日上午8时15分，我坐在本年级指导教室中，是第一个到的。
《柯林斯英汉双解大词典》
Be on time – know what time your Homeroom is scheduled and know what room to go to.
不要迟到——明确你所在行政班级的选课时间和地点。
"All of the teachers acknowledged that he was a sharp kid," his homeroom teacher said.
“所有的老师都承认他是个聪明伶俐的孩子，”他的辅导老师说。
