set up,put up ,look up 的区别

look up sb是什么意思？

为什么说The doctor looks up the girl?

set up 建立，设立set up a school
put up 挂起，举起，如put up your hands ,put up the painting on the wall
look up 检查，查阅，如look up the dictionary查字典，
The doctor looks up the girl?这里是检查的意思

如果宾语是代词，就放在中间，如put it down, put them down.而是名词就放在后面，如put down your hand, put down the books. 这两个其实是同样的道理，都是put sth down或put down sth , look sth up 或look up sth

推举，提名： He looked up his old friends during his stay in London；开业；竖立 put up 提供；尊敬；拜访 look up sb拜访 某人. [口语]拜访；访问： 为什么说The doctor looks up the girl问题补充? 医生上门服务? 如果没有上下文就这个意思： 例句. set up v. 建立；装配；看望；探望；建造；举起；供给…住宿 look up 仰望；查阅. 他在伦敦逗留期间看望了老朋友们