Since you're not going to give the lecture, you might as well simply skip the class and apologize to the professor later.

既然你不准备上课，你也可以干脆逃课，然后向教授道歉。

youdao

Aren't you going to skip the class?

你的确没去，你直觉会讲什么？

youdao

This is the first time for me to skip the class, I feel so bad.

这是我第一次逃课，我感觉很糟糕。

youdao

Some schools give students credit for the fashion week volunteering work or allow students to skip class, viewing the fashion week experiences as valuable.

WSJ: Lowly Tasks During a Week of High Style

China may just skip the middle, or middle class, stage and go directly to solidifying a two-tiered society.

FORBES: Inside China's Consumer Culture

But now she decided to skip her post-class musing-on-the-mats routine, head straight for the Serenity Posse II meeting on Amsterdam.

NEWYORKER: Deniers