I was late for a class.

我上课迟到了。

《牛津词典》

I have a history class at 9 o'clock.

我9点钟有历史课。

《牛津词典》

I class myself as an ordinary working person.

我把自己归类为一名普通的劳动者。

《柯林斯英汉双解大词典》

"I'm refreshed and more productive after class. My e-mails are less cranky."

VOA: special.2011.02.28

It repays innumerable readings and re-readings, so I urge you to read it seventy-five times, let's say, before you come to class on Monday.

这需要反复的阅读和再阅读，所以我建议你们在周一来上课前，要读七十五遍。

耶鲁公开课 - 弥尔顿课程节选

It's more of a, exam-based class. So, I actually had my exam yesterday, and I have one more later on.

这门课主要是以考试为主。事实上，我们昨天刚刚考了一次，不久后还要再考一次。

想进布朗的话 - SpeakingMax英语口语达人

And that whenever I have any questions, instead of going to a how-to book that I had from a class, I always just turn to Catch-22 or East of Eden, which are some of my favorite - two of my favorite novels, and that always seems to help more.

NPR: Could You Be the Great American Novelist?

Four years ago, I came into office -- I promised to cut taxes for middle-class families.

WHITEHOUSE: The White House

Think about it, when I cut taxes on middle-class families, why did I do that?

WHITEHOUSE: The White House