碰巧，她的生日就在我的生日之后。

___As ___it ___happens, her birthday is the day after mine.

碰巧，我目前正在为自己寻找计算机课程，并且我想加入你们的一个课程。

___As ___it ___happens, I am currently looking for a computer course for myself and I would like to join one of your courses.

碰巧，我们俩上了同一所大学。

___As ___it ___happens, we both went to the same university.