我现在不得不走了，因为我得准时去上课。

I have to go now because I must be punctual for class.

youdao

至于现在，如果你选择驾车去上课，那么请记住一定要留出足够的时间来。

There wasn't enough parking for the Hill (where I lived Freshman year), so the parking lot would be full almost at all times.

youdao

And now when I go into a lecture, the nervousness-- because I give myself the permission to be human-- goes away within as little as three hours into the lecture.

现在当我去上课时，紧张感-,因为我准许自己为人-,在课堂进行三小时后会消失。

哈佛公开课 - 幸福课课程节选