英语第三人称的迷糊,Such comprehensive theraphy often﹍the work of soci
英语第三人称的迷糊,
Such comprehensive theraphy often﹍the work of social workers,psychiatrists(心理医生)and psychologists,as well as specialists in pain medicine.空格处的答案是说要谓语动词 involves .可是为什么是第三人称单数形式.为什么是involves ,不用 involve ,深层次的里面暗含什么知识点?先谢!