Grade forgiveness allows students to retake a course in which they received a low grade, and the most recent grade or the highest grade is the only one that counts in calculating a student’s overall GPA.
【例句解析】本句为并列句，其中第一个句子为Grade forgiveness allows students to retake a course，后边跟上一个介词加which引导的定语从句用来修饰限定course;其中第二个句子主语为the most recent grade or the highest grade,谓语为is，宾语为the only one，后边跟上that引导的定语从句that counts用来修饰限定the only one;最后再跟上in短语做状语。
【例句翻译】成绩宽恕允许学生重修得分低的课程，并且在计算学生整体GPA时，最近的或分数最高的才算数。
