be dressed as是被动语态啊.
而dress up as这里的AS 是像什么的意思,把自己装扮成.
1、She intended to dress up as a ghost and as she had made her costume the night before.
2 Dressed up as Father Christmas and accompanied by a 'guard of honour' of six pretty girls,he set off down the main street of the city riding a baby elephant called Jumbo有be dressed as的例句吗