主语单数 表语复数 系动词用什么FOR INSTANCE:The first sight of a baby who is born to this world just now (is/are) his parents.ps:系动词单复数取决于主语还是表语

问题描述:

主语单数 表语复数 系动词用什么
FOR INSTANCE:The first sight of a baby who is born to this world just now (is/are) his parents.
ps:系动词单复数取决于主语还是表语