1. seat vt.“使...就座/坐下”。
1）结构：seat sb/sth/oneself + (介宾/副词).
如：The usher seated us in the front row.
引座员让我们在前排就座。
She seated herself on the table.
她坐在桌子上。
2）该结构变成被动语态，即：be seated + (介宾/副词).
2. dress
1) vt.“给…穿衣, 穿着”，结构：dress sb/oneself + (介宾/副词)，常用的介宾有“in + 衣服”。
如：The little boy isn't old enough to dress himself.
这孩子太小, 还不能自己穿衣服。
该结构变成被动语态，即：be dressed + (介宾/副词).
如：She is dressed in a red coat.
2）vi.“装饰, 打扮”，结构：dress + （介宾/副词)，常见介宾有“in + 衣服”或“as...”，常见副词如up.
如：They dressed up and went to the prom.
他们盛装去参加舞会。
The two young men dressed as students.
这两个年轻人的打扮跟学生一模一样。
参考资料：英语牛人团