内容介绍：（1）act 短语：4 act as 担任……职务，起……作用 act out 表演（对话、故事等） 例如：act for 代理（某人职务），代为（处理某事） act up 捣乱，出毛病I acted as an interpreter while I was in Xiamen. Mr. Black is acting for the old man in his case. (布莱克先生代那个