to drop a course

• 退选

to drop a course的用法和样例：

例句

1. He dropped French so as to take up English.
   他放退选法语课，选读英语课。
2. To add or drop courses, please see the Registrar, Mr. FuLun Heng, in the school office.
   如有加退选选修课及注册事宜，请到办公室与注册主任邢福仑先生办理。