He is often singled out for criticism by his boss
他经常被他的老板挑出来批评
"single out" 的核心语义是「从群体中挑选出来」,强调从多个对象中区分出特定对象。本句中 "He is often singled out for criticism" 使用了被动语态,表示「他经常被挑出来批评」,符合该短语动词的典型用法。
识别要点:(1) 动词 "single" 与小品词 "out" 构成短语动词;(2) 本句为被动式 "be singled out",是该短语的常见形态;(3) "for criticism" 说明挑选出来的目的,"by his boss" 点明动作发出者。
辨析方法:判断是否为 "single out" 需要确认:"single" 是动词而非形容词,"out" 与 "single" 构成动词短语而非独立副词或介词。本句中 "singled" 是过去分词形式,与 "out" 紧邻构成被动结构,符合短语动词特征。
迁移应用:"single out" 可用于主动语态(如 "The teacher singled out the best student")和被动语态(如本句),可分式用法允许宾语插入(如 "single him out")。该短语常与 "for" 搭配说明挑选的原因或目的。