take a seat

take a seat
坐下；就坐
也可以用：sit down,have a seat
还有什么需要帮助的,What you answered was too simple.so what do u want ??be seated is difficult. I have got it just now.But I don't know why is "be seated "can you tell mewhat do u mean??where is "be seated "????My grammer book wrote.can u show methe whole sentence ??I am seated.seat vt. 使…坐下；可容纳…的；使就职seat是使动词，所以就用I am seated.你可以联想一下intrest的用法，就没有那么难理解了。。不要用汉语思维想~~