Translation of "usually" into Chinese

I usually ride my bike to school. I mean to the office.

我通常踏單車上學⋯⋯啊,說錯了,應該是上班才對。

He arrived earlier than usual.

他比平常早一點到達。

My father usually leaves home while I am in bed.

我爸常常在我睡覺的時候出門。