如果你忘了在这里点个逗号，我也不扣分。

Punctuation: No commas are used in defining adjective clauses.

youdao

猜测不扣分，因此如果你对问题的答案不确定，可以猜最佳答案。

There is no penalty for guessing, so if you are not sure of the answer to a question, make the best guess you can.

youdao

本课程第二周结束时会有一个30分钟地图测验(较晚选课的学生可以在课外进行地图测验，不扣分)。

There will be a 30-minute map test at the end of the second week of the course. (Those students joining the course late can make up the map test outside of class with no penalty.)

youdao

Nonparticipation, or not being there, that will lower your participation grade.

不参与，或是不出勤，那将会扣分。

耶鲁公开课 - 死亡课程节选