The intransitive verb for "to register" in Engpsh is "to register". It comes from the Latin "registrare", meaning "to record, to enter in a register".
Examples:
I need to register for the conference by tomorrow.
(我需要在明天之前注册参加会议。)
Have you registered for the election yet?
(你已经登记投票了吗？)
She registered her car at the DMV last week.
(她上周在汽车管理局登记了她的车。)