His teacher was always singling him out, calling on him when his hand wasn't even raised.即使没有举手,老师也常常会选中他,叫他回答问题。I think teachers should be paid more across the board, rather than singling out any one group.我认为全体老师都应该加薪,而不是单给某一群老师加薪。Some Customs officers do show ingenuity in singling out persons for special attention.有些海关关员在选中重点注意对象方面确实别具慧眼。