1.
supplementary lessons, remedial classes
Additional classes or study sessions to help students catch up or improve, often held outside regular school hours.
夏休みに補習がある。
There are supplementary lessons during summer vacation.
成績が悪いので補習を受けることになった。
Because my grades were bad, I have to take remedial classes.
放課後の補習で数学の復習をした。
I reviewed math in the after-school supplementary class.
補習 refers to extra classes, often for students who need additional help.
COMMON PATTERNS:
- 補習を受ける: to take supplementary lessons
- 補習がある: there are supplementary lessons
- 補習授業: supplementary class
USAGE NOTE:
補習 often implies remedial study for struggling students, though it can also refer to optional extra study sessions. Compare with 補講, which usually refers to make-up classes for missed sessions.