“当服务员”常见的英文表达有 “work as a waiter/waitress” 或 “serve as a waiter/waitress”。
“work as a waiter/waitress”：直接表明从事服务员这一职业，“waiter” 指男服务员，“waitress” 指女服务员。例如：He used to work as a waiter in a small restaurant.（他过去在一家小餐馆当服务员。 ）
“serve as a waiter/waitress”：强调以服务员这个身份履行职责、提供服务。例如：During the summer vacation, she served as a waitress at a local café to earn some extra money.（暑假期间，她在当地一家咖啡馆当服务员赚外快。 ）