“补考”常见的英文表达是 “make-up examination” 或 “retake an exam/a test” ，也可用 “supplementary exam” 。具体用法示例如下：
make-up examination：
I have to take the make-up examination next week because I missed the last one.（我下周得参加补考，因为我错过了上次的考试。）
retake an exam/a test：
If you fail the exam, you'll have to retake it.（如果你考试不及格，就得补考。）
supplementary exam：
The university offers a supplementary exam for students who fail the regular one.（学校为考试不及格的学生提供补考机会 。）