●ˌsign ˈup●ˌsign sb ˈup ( ˌsign ˈon, ˌsign sb ˈonless frequent) 1.(with/for sb)to sign a document saying that you agree to work for sb, play for their team, etc.; to persuade sb to do this签约受雇；签约雇用◆She’s signed up with an employment agency. 她已签约就职于一家职业介绍所。◆We’ve signed up three new players. 我们签约聘用了三名新队员。◆Who has been signed up to star in the new movie? 谁签约主演新电影了？2.(for sth)to arrange to do a course of study by adding your name or sb else’s name to the list of people doing it（帮某人）报名，注册（上某课程）◆I’ve signed up for a pottery course. 我已经报名上陶艺班。◆Shall I sign you up for the workshop too? 我要不要也替你报名参加讲习班？3.to agree to become a member of the armed forces; to persuade sb to do this（使）报名入伍◆He tried to sign up when he was only fifteen. 他刚十五岁就想报名参军。[v + adv][v + adv + n][v + n/pron + adv]