serve as主动还是被动
我查了牛津词典,其里面的的例句是：The sofa will serve as a bed for a night or two.可见这是一个用主动语态表示被动力语态的固定用法.这个词就这么用.
serve的具体用法是什么是用to，for还是什么
【动词】（给…）提供；端上：serve sth (with sth) / serve sth (to sb) / serve sb sth
【动词】够…吃（或用）：This dish will serve four hungry people.这盘菜够四个饿汉吃.
【动词】接待；服务：Are you being served?有人接待您吗?
【动词】对…有用；能满足…的需求：These experiments serve no useful purpose.这些实验没有任何实际意义.
【动词】（向一地或一群体）serve sb (with sth)
【动词】可用作,可当…使（尤其别无选择时）serve （as sth)：The sofa will serve as a bed for a night or two.沙发可以当床凑合一两夜.
【动词】产生…的效果（或结果）：serve （as sth)：The judge said the punishment would serve as a warning to others.法官说这种惩罚将起到杀一儆百的作用.
【动词】（为…）工作,服务,履行义务：serve （sb) (as sth) / serve (in/on/with sth) / serve (under /with sb).
【动词】任期为；担任（时间）达；培训期为：serve （as sth)
【动词】服（刑）：She is serving two years for theft.她因盗窃罪正在服两年徒刑.
【动词】把…递交；（向某人）递交：serve sth (on sb) / serve sb with sth (如递交传票）
【动词】发（球）：Who’s serving?谁发球?
“work as”和“serve as”的区别有哪些
work as多指长期.稳定的职位和工作。
serve as多指暂时.不稳定的工作。
比如:
I served as a temporary worker in a cafe last summer.
