Past experience indicates that it is difficult to do well in this course if you do not attend class on a regular basis.

如果你不持续的上课，过去经验指出你很难把这堂课学好。

youdao

Try to attend regular class so that you do not face any last minute pressure.

尽量参加每一堂课，这样你就不会在期末的最后一刻不知所措了；

youdao

In order not to give you more troubles as well as for my benefit, I assure you that I will not again do this stupid thing that worries everybody and I promise I will attend class everyday.

为了不再跟您添麻烦，也为了我自己好，我向您保证我不会再做出这种愚蠢的事情，让大家都替我担忧，也会保证每天去上学。

youdao

Those who do not attend college are second-class citizens in a cultural sense first, and in an economic one only second.

FORBES: I Went To College, Law School, And Grad School - Because I Wasn't Born Elite