表达 rule the roost 等于汉语里说的 当家作主,指 在一群人或一家人当中最有权威和影响力、可以作决定的那个人;这个人一般要作出所有要紧的决定。
例句
His girlfriend1 rules the roost, so hell have to check its OK with her first.
他的女友平常作主,所以他得先和她确认一下这件事。
My mum is always in charge2 of important3 decisions4. She rules the roost.
一直以来,我母亲负责作要紧的决定。家她作主。
I always thought5 Dave ruled the roost in his house, but I think his dog is really in control6!
我一直以为戴夫是他家作主的那个人,但我看他的狗才是真的管事的!