但是我必须承认，这位教授讲了几次很好的课。

But I must admit this professor performed severy very good lessons.

youdao

但是我必须承认，这位教授讲了几次很好的课。

But I must admit that this professor has given us some excellent lectures.

youdao

但是我必须承认，这位教授讲了几次很好的课。

But I must admit that this professor has given us some excellent lectures.

youdao