One of the things I want to emphasize, that I've not emphasized already, is attendance here in the lectures is very much required.

有一点我想强调，之前没说到，请不要缺课。

耶鲁公开课 - 新约课程节选

If you're missing a lot of lectures,it could affect your grade.

缺课过多会影响你的期末成绩。

耶鲁公开课 - 新约课程节选

Attend all the classes.

不要缺课

耶鲁公开课 - 心理学导论课程节选