oust是及物动词，常与介词from或as引导的短语连用。

用作及物动词
▲S+～+n./pron.
The rebels finally managed to oust the government from power.反叛者最后总算夺取了政权。
◇ 用于be ～ed结构
The politician was ousted from office by a vote from members of his own party.那个政客被他自己党内的成员投票表决赶下台。
He was ousted as chairman.他的主席职务被革除了。

oust, dismiss, eject, evict, expel
参见eject条。