“is”用于主语是第三人称单数情况下,如:he(他),she(她),this(这个),who(谁),it(它),Li Ming(李明),Your mother(你的妈妈),my name(我的名字)或the desk(这桌子)等。例句: He is boy. What is this? My name is Danny. Danny is playing ping-pong. Is she a teacher? are”常用于主语是第二人称或第三人称复数时,如:you(你),they(他们),Li Ming and Danny(李明和丹尼),your father and mother(你的父亲和母亲) 或these(这些)等。例句: Are you hot? You are hot. They are my friends. Li Ming and Danny are good friends. What are these? 总上所述是第一个!!!